tag:blogger.com,1999:blog-59666413619389166702024-03-18T21:15:32.014-07:00Newcastle University International Singapore Quadcopter/rotor Project - QuadrojakAnonymoushttp://www.blogger.com/profile/10547303205062852329noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-5966641361938916670.post-26205500039593544222014-05-11T10:43:00.000-07:002014-05-11T10:43:59.790-07:00Hi all,<br />
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It will be my turn (Leonard) to update the blog.<br />
These are the updates for the project so far.<br />
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At last, the carbon fiber plates have arrived on tuesday 6/05/2014. The long wait has been over. Now, it is time to construct our very own quadrojak. All the components that are required for the construction, have been placed on the table so that it will be much easier for the rest of the members to build the structure. Looking from figure 1, the four longer carbon fiber tubes will be used and be mounted on the quadrojak structure. They are used to provide mounting for the crash cage that will be constructed at a later time<br />
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<tr><td class="tr-caption" style="text-align: center;">Figure1: Components For Construction Of Quadrojak</td></tr>
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The four big motors will be used for the rotation of the propellers. Each of them will be placed at the end of each support arm of the quadrojak.<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMjiIzCRunJaPVmCXyAgIbeDmXZqTMSMeQyP5-laqhX0WUnRLLpJIBXRvzHFtAHcLq69mHeyd5EozS4uBREXeXqR93EisLBDcDNsUDWsxHIkB-50MKVydS3xWM49CcePOmkv3rHAY5n0Hq/s1600/2014-05-06+17.25.02.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMjiIzCRunJaPVmCXyAgIbeDmXZqTMSMeQyP5-laqhX0WUnRLLpJIBXRvzHFtAHcLq69mHeyd5EozS4uBREXeXqR93EisLBDcDNsUDWsxHIkB-50MKVydS3xWM49CcePOmkv3rHAY5n0Hq/s1600/2014-05-06+17.25.02.jpg" height="180" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure2: Motors To Be Used</td></tr>
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For the construction of the quadrojak, the system engineer aka Angus,
the control engineer aka Jonathan Daryl and the structural engineer aka
Edwin were all involved. Working hand in hand together, they have to
ensure that the wirings for the control system are connected correctly,
the carbon fiber tubes are tightened into position, the parts of the
structures are joined appropriately. Here are some pictures of the construction process.<br />
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After a tiring day working on the quadrojak, with a big smiles on their faces, they are happy with the final product of the quadrojak.<br />
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<tr><td class="tr-caption" style="text-align: center;">Figure3: Final Product Of Quadrojak</td></tr>
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Even though the main structure of the rojak has been completed, they
have to test out on the control system to see if the motors are able to
be powered up so that they can allow the propellers to rotate. This is the result that is shown in the video after they have test out on their control system. Note that in the video, the bottom part of the crash cage has been built unto the quadrojak's structure. <br />
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Hearing from the sounds of the motors that are being generated, it should be fast enough to provide the right amount of thrust to lift up the system.The construction of the whole crash cage is not complete yet so the bottom part of the crash cage will be removed from the quadrojak first. In order to protect the propellers of the quadrojak during flight testing, a PVC tubing structure was being constructed around the quadrojak. <br />
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<tr><td class="tr-caption" style="text-align: center;">Figure4: Quadrojak With PVC Tubing Structure</td></tr>
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Any advancements such as flight testings will be postponed to a later date as we will be focusing on their individual report, presentation and poster for FYP submission. After the FYP submission, we will also be preparing for their exams. Do look forward to hear from us very soon when everything is completed. Thank you very much! <br />
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Feel free to give any comment or feedbackAnonymoushttp://www.blogger.com/profile/15965041539378309349noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-12042261152581173432014-04-25T00:04:00.002-07:002014-04-25T02:26:47.604-07:00<div style="text-align: justify;">
Its the last week of our 4 weeks of Easter break! This is Edwin giving an update of past week's progress:</div>
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The latest news on the carbon fibre plates for our quadcopter mainframe is that delivery will be delayed for yet another week (WHAT!? *&#%@$*!!!). But its ok. Good stuff are worth waiting for.</div>
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Angus and I were instructed to build a simple protective structure for our Quadcopter. I proposed to use PVC pipes (those that they use for water plumbing) instead of carbon rods because their fittings are readily available. This cage took me slightly more than 1 hour to build, and it is HUGE! (see figure below)</div>
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It measures 1.25 metres in width. Thankfully the pipe's OD fits the carbon fibre tube's ID (18 mm), so installation and fitting is easy. The only disadvantage is its heavy weight. I'm planning to drill a lot of holes on the pipes to reduce its weight. It is meant to reduce impact during crash (to protect propeller/motor and external objects), thus as long as its rigid enough to hold its shape, the number holes on the pipes should not matter. The cage is built elevated to the same level as the propeller (see Figure below).</div>
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Still on the subject of cage, Bing Zhi has been making progress with his prototype fabrication. Due to budget constraints, he is planning to downsize and use 12 mm diameter carbon (longitudinal direction) rods to build his prototype. It should take at least another week for him get the raw materials and build it before we get to see the real physical cage. The figures below shows his customised part (3-D printed). It will be used to connect the big cage onto carbon fibre tubes that are attached onto the Quadcopter's centre frame.</div>
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Another cage we've been experimenting and testing is Leonard's terrestrial drive cage. He has been trying to assemble everything together for the past 2-3 weeks (God knows how much time he spent 3-D printing the modular parts). Land movement wise, it was quite successful. JD managed to control and get it moving easily (see picture below). <span style="text-align: center;">Angus was so excited he wanted to try flying it straight away. However, there were some difficulty in flying due to the lack of rigidity in the printed parts.</span><br />
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Nevertheless, we can say it achieved the primary objective of rolling on the ground with the small Quadcopter. Here is another picture of the cage (slightly reinforced with styrofoam).<br />
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(Yeah it was dark; this picture was taken quite late. You can see how hardworking our guys were!)</div>
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Jeremy has been working on programming for his battery loader. The electronics stuff have been bought. All he needs to do now is to fix everything together and make it to work! (see figure below).</div>
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We all have 3 reports to be submitted in the coming week and everyone is working extra/double/triple/very hard for officially the last month of our University student life. It has been a long (and sometimes agonising) wait to see our final product. But i strongly urge everyone to stay tuned and be patient. Like what I've mentioned, good stuff are worth waiting for! We will make our Quadcopter fly with everything else working!</div>
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Anonymoushttp://www.blogger.com/profile/04075387069261982271noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-11562998055660356372014-04-20T08:46:00.001-07:002014-04-20T08:46:40.673-07:00Progress update!Hi Happy Easter everyone!<br />
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Anyway JD here updating the blog again, well I've got a lot to update you guys about our progress these past 2 weeks!<br />
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Basically we've got our finally long awaited batteries!<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjC6seWjwwASHYhx9nGPyALsnW_di94OSDsThIP9x2-G9jdDb7G2aJgT5HDBgYopQNLtFzaODO19FF8SDKOqOdWO__efj0dMjb60h8ISik5CLDT6p8rqcXXYL8ksPMHwMjhurFsFNQri8WA/s1600/2014-04-07+11.43.17.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjC6seWjwwASHYhx9nGPyALsnW_di94OSDsThIP9x2-G9jdDb7G2aJgT5HDBgYopQNLtFzaODO19FF8SDKOqOdWO__efj0dMjb60h8ISik5CLDT6p8rqcXXYL8ksPMHwMjhurFsFNQri8WA/s1600/2014-04-07+11.43.17.jpg" height="179" width="320" /></a></div>
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIRZIvgEywuzo3SyiA_xJWY4qtO1_lVLbUHq73J6hG7pgn4djAHjKvDuP6dspuAoZ5YE-fL_Dk7URFxyX6wLRb64SxBZD1FdzvBCB_n0XqbBUA49pSQZ1LgFdwnTOdMOCGu-9BtDryBtxX/s1600/2014-04-07+11.41.12.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIRZIvgEywuzo3SyiA_xJWY4qtO1_lVLbUHq73J6hG7pgn4djAHjKvDuP6dspuAoZ5YE-fL_Dk7URFxyX6wLRb64SxBZD1FdzvBCB_n0XqbBUA49pSQZ1LgFdwnTOdMOCGu-9BtDryBtxX/s1600/2014-04-07+11.41.12.jpg" height="179" width="320" /></a><br />
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The monstrous battery for our quad copter, and that means, Angus and me can test out our motors and propellers and see how fast it can go!<br />
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As seen above the powerful battery powering up our motor and propeller. If you were there you can feel the vibrations and thrust that it created, it's quite scary that's why we also included a test cage to test it out.<br />
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And another thing is that for me the control system designer, I've been testing out the flight for the small quad copter to test out the functions of the Futaba controller as well as the Arduino Pilot Mega 2.6 with mission planner, you can see the videos below showing me testing the landing function of the Quad and also the Loiter mode, where it locked the GPS position and it refuses to move when its being dragged out.<br />
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*edit the loiter video I cant seem to upload it but here's the link =) <a href="https://www.dropbox.com/s/1yhmto3jg2ths3x/Loiter.mp4">Loiter</a></div>
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And for the the terrestrial drive by leonard here's a sneak preview on our small quadcopter (with jurassic park theme in the background)!</div>
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<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dw3QjbUxO7gFC79yTsWLT6yEFSvGtjh82A_mmmHHblnZuhpqx0Hx36g8vNDHupxYNMwqulJbUEmDSDfloHDsw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
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And for the structure of our quadcopter we have a few small additional stuffs for protecting the motor, our distribution board and etc.</div>
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The 3D printer building the motor protection cage</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIoI28E27OvQjMUSQjBgFSbThCGfiq4XKfttm5zLV833ruBSlzt0IHJRON9AGK0wkFRi0eC-4HVfcluSTO3wCM2_tzVDanMJcs2aSsepeuuLHQjau-7nJV_y8znOtUWj8Y2-WfTbhBU1zg/s1600/2014-04-14+19.25.59.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIoI28E27OvQjMUSQjBgFSbThCGfiq4XKfttm5zLV833ruBSlzt0IHJRON9AGK0wkFRi0eC-4HVfcluSTO3wCM2_tzVDanMJcs2aSsepeuuLHQjau-7nJV_y8znOtUWj8Y2-WfTbhBU1zg/s1600/2014-04-14+19.25.59.jpg" height="320" width="180" /></a></div>
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the motor protection cage</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibCjRj8_N-Zbl4qs_tP3YRWiRu-_Xpsj1TNp5pxrSrVB6Oigl_H7a9GCRAlY9m-lhy8jQoqhIgyFs5KQamoXATzoFykOLOej5s8PUgAmzheBvzD0zM6ETTvkRd19sQ_nOrnEbKN98TQs39/s1600/2014-04-15+10.03.06.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibCjRj8_N-Zbl4qs_tP3YRWiRu-_Xpsj1TNp5pxrSrVB6Oigl_H7a9GCRAlY9m-lhy8jQoqhIgyFs5KQamoXATzoFykOLOej5s8PUgAmzheBvzD0zM6ETTvkRd19sQ_nOrnEbKN98TQs39/s1600/2014-04-15+10.03.06.jpg" height="180" width="320" /></a></div>
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Cable holders</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGg5fsKDHznKTsAgTC8ZGddHHD-0yjAHvwtMTPc6j9pSZMtg4a2USH_atq1ZWeYJfjdhmd3sdHfdt7nChYM54_vHu7lpHwkY2cinhikibnmdVQWrCiA7HRryJ7synGofsG3HrUrNXiWjcM/s1600/IMG-20140418-WA0008.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGg5fsKDHznKTsAgTC8ZGddHHD-0yjAHvwtMTPc6j9pSZMtg4a2USH_atq1ZWeYJfjdhmd3sdHfdt7nChYM54_vHu7lpHwkY2cinhikibnmdVQWrCiA7HRryJ7synGofsG3HrUrNXiWjcM/s1600/IMG-20140418-WA0008.jpg" height="320" width="240" /></a></div>
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Distribution board holder</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjy4oVXb3vdDkV1uBs9KQNS3meiFMzG0EgWivSEfAabj1Hlm7Dx4aBJcWka1QlfcNmnkXs1AuQkDNC7-_qJMpTMpB_cpy-lNFA3AN-bIeggemjVgJ8Jm3XQxLwOBcAk2Og-MUA4vXODfkXK/s1600/2014-04-14+16.41.24.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjy4oVXb3vdDkV1uBs9KQNS3meiFMzG0EgWivSEfAabj1Hlm7Dx4aBJcWka1QlfcNmnkXs1AuQkDNC7-_qJMpTMpB_cpy-lNFA3AN-bIeggemjVgJ8Jm3XQxLwOBcAk2Og-MUA4vXODfkXK/s1600/2014-04-14+16.41.24.jpg" height="320" width="180" /></a></div>
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Another distribution board holder</div>
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And here's a quick sneak peak on how powerful our motor without the propeller, being tested out after I finally configure the ESC with the APM, which took me a few days to troubleshoot! (that's explain the evil laughter... sorry too excited...)</div>
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Last but not least here's Jeremy with his battery loader concept taking shape!!</div>
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Let's see in a few weeks time everything will be integrated into one system and we will be able to show off each and everyone's effort to fly the quadcopter successfully!</div>
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Anyway cheers guys! Hope you guys have an awesome long weekend! Stay tuned for our next update and hopefully we will assemble the big quad and you can see it fly!!!</div>
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Signing of JD =D</div>
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<br />Anonymoushttp://www.blogger.com/profile/02341178988581103427noreply@blogger.com2tag:blogger.com,1999:blog-5966641361938916670.post-10352438887728598432014-04-08T01:41:00.001-07:002014-04-08T01:41:40.725-07:00Hello all!<br />
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This post is an short update on what we did.<br />
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We had a <a href="http://www.singaporetech.edu.sg/career-services/sit-career-fair" target="_blank">career fair</a> where there was an opportunity to display the project.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6FKGWWJjMII3DSeRr-giCpSyVWcHEU5uovcBz0ItfGH6QNpmiF0eHuIPe2YIdc8eKA3w5iSTZRWRP_NccynXGTMBZYcECSmTFHg8ILMA3U9YeaMlKb03Pjw3UJwwlfh5xkggo7dDLZHDN/s1600/wongbingzhiposter.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6FKGWWJjMII3DSeRr-giCpSyVWcHEU5uovcBz0ItfGH6QNpmiF0eHuIPe2YIdc8eKA3w5iSTZRWRP_NccynXGTMBZYcECSmTFHg8ILMA3U9YeaMlKb03Pjw3UJwwlfh5xkggo7dDLZHDN/s1600/wongbingzhiposter.JPG" height="225" width="320" /> </a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhiqeM_U_SWStXpPLdrZL9uzAj8tFj03UuSN8xzSgturPcm66e2SD9PfDdIHL_tY8geajGbdjKnUh8d0ibmPKXfhOReXqdfr9ANy9cPzdD_WLSPizfgUqY6UuMLp6qvPeSjgKTLlUoId6bO/s1600/jeremyposter.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhiqeM_U_SWStXpPLdrZL9uzAj8tFj03UuSN8xzSgturPcm66e2SD9PfDdIHL_tY8geajGbdjKnUh8d0ibmPKXfhOReXqdfr9ANy9cPzdD_WLSPizfgUqY6UuMLp6qvPeSjgKTLlUoId6bO/s1600/jeremyposter.JPG" height="226" width="320" /></a></div>
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The posters are samples of some of the group members' posters (Bing Zhi & Jeremy)</div>
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If you would like to see the rest do leave a comment.</div>
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Many people took an interest in the project. It was a good opportunity to give out resumes as well as explain to potential employers on the scope of the project.</div>
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We hope you enjoyed this short update.</div>
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<br />l33thttp://www.blogger.com/profile/16871573399858223702noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-89661831381741850972014-03-31T02:54:00.001-07:002014-03-31T18:52:21.524-07:00Week 9, prototype in progressThis is the Week 9, where the project is due on the 16th weeks, 5 more weeks!!!!<br />
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This week, we would like to focus on the quadrotor and the programming parts itself.<br />
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The structure of the quadrotor is made of acrylic, a mock prototype. so as to test the fitting of different parts and components provided by the controls.<br />
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This 4 insane motor is not light in weight, but has the torque to lift the whole copter, but now the copter is estimated to be 5kg. Too heavy....<br />
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Well, for the control parts, this is what jonathan daryl has in his parts.<br />
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<span style="font-family: Calibri; font-weight: bold;">Installing
the new APM 2.6 microprocessor</span><span style="font-family: Arial;">•</span><span style="font-family: Calibri;">Before
APM 2.6 was installed the previous micro-processor was DJI NAZA</span><span style="text-indent: -0.31in;"><span style="font-family: Arial; mso-special-format: bullet;">•</span></span><span style="font-family: Calibri; text-indent: -0.31in;">With
the new micro-processor installed and hooking it up with new GPS and a new
power module, we have our “improved” Quad copter!</span> </div>
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<span style="font-family: Calibri; font-weight: bold;">Programming
and Configuring Futaba Controller</span></div>
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<span style="font-family: Arial; text-indent: -0.31in;">•</span><span style="font-family: Calibri; text-indent: -0.31in;">With
the current setup, the </span><span style="font-family: Calibri; text-indent: -0.31in;">futaba</span><span style="font-family: Calibri; text-indent: -0.31in;"> controller is re-configure with
12-chn interface</span></div>
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<span style="font-family: Arial; text-indent: -0.31in;">•</span><span style="font-family: Calibri; text-indent: -0.31in;">The
video is attached on the folder</span></div>
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<span style="font-family: Arial; text-indent: -0.31in;">•</span><span style="font-family: Calibri; text-indent: -0.31in;">Unfortunately
we haven’t able to fly this quad copter yet, as one of the motor is damaged </span></div>
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<span style="font-family: Calibri; text-indent: -0.31in;">and
we are waiting for a the new one</span></div>
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<span style="font-family: Arial; text-indent: -0.31in;">•</span><span style="font-family: Calibri; text-indent: -0.31in;">But
as seen on the video each motor can turn and should be able to fly when the </span></div>
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<span style="font-family: Calibri; text-indent: -0.31in;">propellers are attached on them</span></div>
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<span style="font-family: Calibri; font-weight: bold;">Autonomous
control</span></div>
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<span style="font-family: Arial; mso-special-format: bullet;">•</span><span style="font-family: Calibri;">Introducing
the parts that we are going to use, the </span><span style="font-family: Calibri;">Xbee</span></div>
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<span style="font-family: Arial; mso-special-format: bullet;">•</span><span style="font-family: Calibri;">Both
units are able to communicate with each other and one will act as </span><br />
<span style="font-family: Calibri;">the
transceiver, sending data from the land control station, and the receiver that
is </span><br />
<span style="font-family: Calibri;">on the quad copter itself.</span></div>
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<span style="font-family: Arial; mso-special-format: bullet;">•</span><span style="font-family: Calibri;">Things
to take note, autonomous flight is not allowed in certain countries and you </span><br />
<span style="font-family: Calibri;">need to seek clearance from government authorities, for this school project we
will not</span><br />
<span style="font-family: Calibri;">fly the quad copter outside of our intended work space area.</span></div>
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<span style="font-family: Calibri;">Here I have attach a video on the DJI copter, please enjoy!!! woooooohooooo </span></div>
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<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dyAjS3PhihceD2KJxJREyTwh9K_amqU4sJxN5Th-9bvNP93ppG2SBx8P_Qdq-VoILIN-lwR7z-QQlENo8VhXw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
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<span style="font-family: Calibri;">Preparing to test the quadrotor!!!!!!!!!!!!!!!!!!!!!! </span></div>
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<span style="font-family: Calibri;">This is a protective cage that we will use to test the propeller speed</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvUnMEezP2Y63RmK2Yo3gz3eFLuSTGditk2kjwv7DLyjDnkDTwyiC6FP1vykmmhbWmVsFBf2aBgzT4cJrcojkgwi5zf7azthzpyWVjxayDaONwJwV9vWmhdD-Px2IsBWWCJpALSVKlVjcB/s1600/2014-03-28+10.16.58.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvUnMEezP2Y63RmK2Yo3gz3eFLuSTGditk2kjwv7DLyjDnkDTwyiC6FP1vykmmhbWmVsFBf2aBgzT4cJrcojkgwi5zf7azthzpyWVjxayDaONwJwV9vWmhdD-Px2IsBWWCJpALSVKlVjcB/s1600/2014-03-28+10.16.58.jpg" height="180" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi10c-S7A-CFyuHjKPPAOPwPAI7PXIdRMzQNV7grwFFC-JikKuURVh-K-Fo9yR5rthuqtPUFWulF_6HwldZUOYHC-Jc8GdCYPOGucmkj4ib-XW3aC9-ab8Pemc0bXADf0e0dHEofKCsecVb/s1600/2014-03-28+10.33.16.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi10c-S7A-CFyuHjKPPAOPwPAI7PXIdRMzQNV7grwFFC-JikKuURVh-K-Fo9yR5rthuqtPUFWulF_6HwldZUOYHC-Jc8GdCYPOGucmkj4ib-XW3aC9-ab8Pemc0bXADf0e0dHEofKCsecVb/s1600/2014-03-28+10.33.16.jpg" height="320" width="180" /></a></div>
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<span style="font-family: Calibri;">that's all for this week, next week will be more exciting~~~ cheers! </span></div>
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Anonymoushttp://www.blogger.com/profile/03674877782181123750noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-85986247921232920452014-03-23T07:24:00.002-07:002014-03-25T11:17:33.628-07:00And the build being...<span style="font-family: inherit;">We are all getting bored of the paper works, equations and theories. Finally moving on from paper warriors to the fabrication of Quad Rojak. Before anything tangible can happen, there are a little more paper works to be conquered. </span>While waiting the the shipment of raw materials, we should<span style="font-family: inherit;"> proudly present to you our concepts through the posters </span><br />
<span style="font-family: inherit;"><br /></span>
<span style="font-family: inherit;">From the </span><span style="background-color: white;"><span style="font-family: inherit;"><span style="line-height: 18.479999542236328px;">System Level Design (SysLeD), Angus, my point of view. The parameters of Quad Rojak had been established after </span></span><span style="line-height: 18.479999542236328px;">numerous</span><span style="font-family: inherit;"><span style="line-height: 18.479999542236328px;"> experiment with in house design and 3D printed </span></span><span style="line-height: 18.479999542236328px;">equipments</span><span style="font-family: inherit;"><span style="line-height: 18.479999542236328px;">.</span></span></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivcAGiZfGv5WVLPiMs818J5ZCv3LvSQ5Dd9f2TGPW-lfL4zOFf1Ol62ejFkItcl_b0SkL4k5HmTtPvFQQ4GL0CaazfyPs5ye4t2hHFZLjSInkH6B1qlFfuAEAeGudybEiXdwmb9EN7qKXw/s1600/Angus_Poster_2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivcAGiZfGv5WVLPiMs818J5ZCv3LvSQ5Dd9f2TGPW-lfL4zOFf1Ol62ejFkItcl_b0SkL4k5HmTtPvFQQ4GL0CaazfyPs5ye4t2hHFZLjSInkH6B1qlFfuAEAeGudybEiXdwmb9EN7qKXw/s1600/Angus_Poster_2.jpg" height="640" width="452" /></a></div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 43: System design of quad copter</span></div>
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<span style="background-color: white;"><span style="font-family: inherit;"><span style="line-height: 18.479999542236328px;">From the Control System Design, JD, point of view. The configuration and programming of the Microprocessor and Electronic speed controller had also been decided. Meanwhile, JD will use his understanding of the new Microprocessor and attempt to fly the existing quad copter Flame Wheel 450 (the one we </span></span><span style="line-height: 18.479999542236328px;">disassemble during the first week</span><span style="font-family: inherit;"><span style="line-height: 18.479999542236328px;">).</span></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9gARLrI4VfxM-W2KgPaKXReMxIMJkOkwrCS2by1CARApvF1jmO0aRem1Ma3IqKSO_y7PSpsRbFAqZEcHXA-il4ITNPZ21f8WchxKKY4UmXcfq1LB6qJVWUa2Iu4-qHA3O30sUBldauwjj/s1600/Jposter_01.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9gARLrI4VfxM-W2KgPaKXReMxIMJkOkwrCS2by1CARApvF1jmO0aRem1Ma3IqKSO_y7PSpsRbFAqZEcHXA-il4ITNPZ21f8WchxKKY4UmXcfq1LB6qJVWUa2Iu4-qHA3O30sUBldauwjj/s1600/Jposter_01.jpg" height="640" width="452" /></a></div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 44:Control system Design of quad copter</span></div>
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Up next we have Edwin Goh who is in charge of the structure. Material selected are mainly carbon fiber and some aluminium. We knew that Edwin had made the right choice for material when he mentioned that it was harder to cut carbon fiber rod than metal rod. Before making any major decision in the detail design Edwin intended to use acrylic and 3D printing to build our first Quad Rojak prototype.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifxpmyotXAmTSO6j9xJ7W25Sceqr1NFOKSt8NF6t6eXBZWuKqHGt3a6psbCtAuHY5pzyIaQzl2WFaQnSMkzy8cuzQP6N9xMDCEC_AybDr7dFWrEsyRfS3R2ejKUfXmueibSquW0ZfXVvD2/s1600/IMG_20140318_223912.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifxpmyotXAmTSO6j9xJ7W25Sceqr1NFOKSt8NF6t6eXBZWuKqHGt3a6psbCtAuHY5pzyIaQzl2WFaQnSMkzy8cuzQP6N9xMDCEC_AybDr7dFWrEsyRfS3R2ejKUfXmueibSquW0ZfXVvD2/s1600/IMG_20140318_223912.jpg" height="150" width="200" /></a></div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 45: Sawing of carbon fiber rod</span></div>
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<span style="background-color: white;"><span style="color: #666666; font-family: Trebuchet MS, Trebuchet, Verdana, sans-serif;"><span style="font-size: 11px; line-height: 14.7839994430542px;">Figure 45: Some standard components, carbon fiber rods and 3D printed parts</span></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIR6CdOM4KCeqGnWSRZMcL_jPILaoIi7y5F_BvZCW4EWeu4k9sIl5WzVc070szxIhmb5ITVNXdSbgA2sukylVYk-qN7IId8XUNo79sIDam1DW6Gyw3H6ziKHW9ylPHWXFAAtqPdbyAOiJN/s1600/EdwinGoh-A1Poster.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIR6CdOM4KCeqGnWSRZMcL_jPILaoIi7y5F_BvZCW4EWeu4k9sIl5WzVc070szxIhmb5ITVNXdSbgA2sukylVYk-qN7IId8XUNo79sIDam1DW6Gyw3H6ziKHW9ylPHWXFAAtqPdbyAOiJN/s1600/EdwinGoh-A1Poster.jpg" height="452" width="640" /></a></div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 46: Structure design of quad copter</span></div>
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Jeremy Yeo the Battery loader designer. After tremendous effort and time spending on researching, computer aided design (CAD) software and 3D printing Jeremy was finally able to come out with all the require components down to the smallest details (number of teeth in the rack and pinion).<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3WILMiVqCLVsmGj36V229TUFER_aoUxc-LvH21omR17TtO2SUjsGxVAzeDYOc37QpZm_gKRT_Mwr047ImTnwq43GmZgevRdwe6kM6tnNJs0aznC3EbHKYagXyHODT-A0o1vBIKNbIoUT6/s1600/Jeremy+Yeo_01.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3WILMiVqCLVsmGj36V229TUFER_aoUxc-LvH21omR17TtO2SUjsGxVAzeDYOc37QpZm_gKRT_Mwr047ImTnwq43GmZgevRdwe6kM6tnNJs0aznC3EbHKYagXyHODT-A0o1vBIKNbIoUT6/s1600/Jeremy+Yeo_01.jpg" height="452" width="640" /></a></div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 47: Battery loader design for quad copter</span></div>
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It is now Wong B.Z turn, he who is in charge of crash protection cage.The material chosen is also mainly carbon fiber and some rubber for connections purposes. Anyone must know that with more protection it is going to weight more on Quad Rojak. Therefore for now, B.Z is still trying to find a balance between protection and weight before the fabrication of crash protection cage can being.</div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 48: Robust crash cage design for quad copter</span></div>
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<span style="background-color: white;"><span style="font-family: inherit;"><span style="line-height: 14.7839994430542px;">Finally, we have Leonard our terrestrial drive designer. After much </span></span><span style="line-height: 14.7839994430542px;">discussion with the team, Leonard had decided to change some </span><span style="font-family: inherit;"><span style="line-height: 14.7839994430542px;">design features of the current </span></span><span style="line-height: 14.7839994430542px;">Terrestrial</span><span style="font-family: inherit;"><span style="line-height: 14.7839994430542px;"> Drive. A very exciting prototype to look forward to, stay tuned folk.</span></span><span style="font-family: inherit;"><span style="line-height: 14.7839994430542px;"> </span></span></span></div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 11px; line-height: 14.7839994430542px;">Figure 48: Robust crash cage design for quad copter</span></div>
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<span style="color: #666666;"><span style="background-color: white;"><span style="font-family: inherit;"><span style="line-height: 14.7839994430542px;">Special Thanks to J</span></span><span style="line-height: 14.7839994430542px;">eremy Yeo and Daniel Ng Chi Koon for preparing Spaghetti for the class this week. </span></span></span><span style="background-color: white; color: #666666; line-height: 14.7839994430542px;">It was out of goodwill seeing how hard we work for the Quad copter project Jeremy Yeo decided that he should encourage us with home cooked food. Such group mate, heart warming.</span></div>
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Anonymoushttp://www.blogger.com/profile/10547303205062852329noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-59008328238554516802014-03-16T10:35:00.002-07:002014-03-16T10:35:51.745-07:00Hi all!<br />
Leonard here. I will be updating the blog for this week.<br />
At the start of week 7,we continued to work on our finalised concepts, making the required changes accordingly and drew the appropriate engineering drawings.<br />
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First off, we have Angus,<br />
With confirmation of appropriate calculations for motor selection, he proceeded to purchase one motor. As the new motor has been collected, further experiments were being conducted for testing. <br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUNVSRqhE2fxSOr0huaEmZKsPX3V8ZzI-smxOqf-i-FJ4Eu-H5ivT7BunACG4XavQpGVD621cd2KN0JZtAVnI46D-QXxJvYyROrZAZxXWQL88w6ZCveQBjIs4kY-LSYnuBedJN20CojH7e/s1600/2014-03-11+12.06.19.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUNVSRqhE2fxSOr0huaEmZKsPX3V8ZzI-smxOqf-i-FJ4Eu-H5ivT7BunACG4XavQpGVD621cd2KN0JZtAVnI46D-QXxJvYyROrZAZxXWQL88w6ZCveQBjIs4kY-LSYnuBedJN20CojH7e/s1600/2014-03-11+12.06.19.jpg" height="225" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 31: New motor</td></tr>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioYUH9FbSzkT-woaNh32y6qpt0Kf35qTwmWjMCoodMSKKgiBHM_OKW0Ejgydy5TnSofvwprUhh8iV0QJCgHGOiJ2nZe6hrE0oVLpIRQ5yU_3qe0JfvEXrbbZHdG5ZXQJFPxXxb5-NKIS03/s1600/2014-03-11+20.22.45.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioYUH9FbSzkT-woaNh32y6qpt0Kf35qTwmWjMCoodMSKKgiBHM_OKW0Ejgydy5TnSofvwprUhh8iV0QJCgHGOiJ2nZe6hrE0oVLpIRQ5yU_3qe0JfvEXrbbZHdG5ZXQJFPxXxb5-NKIS03/s1600/2014-03-11+20.22.45.jpg" height="400" width="223" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Fiqure 32: Motor mounted with Propeller</td></tr>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYxfwa6EVZsQxfoLvpWaheFU7sDfPHDOO49wY6HwXsa85GzuOvXCeWy8yIyQBsIgJlfgUZ9NgG9M-m-l-69IDBZ5PEjich3iOn1_X9dSDGVxHRZMmJ1e3hPKPCo7rnZOtBp_YlqqOXCpyq/s1600/2014-03-11+21.50.53.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYxfwa6EVZsQxfoLvpWaheFU7sDfPHDOO49wY6HwXsa85GzuOvXCeWy8yIyQBsIgJlfgUZ9NgG9M-m-l-69IDBZ5PEjich3iOn1_X9dSDGVxHRZMmJ1e3hPKPCo7rnZOtBp_YlqqOXCpyq/s1600/2014-03-11+21.50.53.jpg" height="225" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 33: Conduct of experiment</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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After determining the appropriate motor for the quadrotor, Edwin proceeds to make changes to the main frame of the quadrotor. By working with the dimensions of the motor, changes have been made to the main frame so that the motor can be mounted properly. The main frame of the quadrotor consist of four pieces of carbon fiber cylindrical rods being clamped into position. Each of the rod has a mounting platform that allow the motor to sit into position. The following pictures show the proper mounting of the motors.<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBYBQM53Z9j-XQJIcLT7SlnkfYjgrJVUrseyWlXHNsEGlCEN3Gf7h9Ki4janE7nHPPSp3Usly9rtaztkCQ6XM9EbgK6cT9mcH0bFdQWCa8Jw38q-pXRaU7PYM_IlNjerEW3pzTzgeDBGsY/s1600/4.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBYBQM53Z9j-XQJIcLT7SlnkfYjgrJVUrseyWlXHNsEGlCEN3Gf7h9Ki4janE7nHPPSp3Usly9rtaztkCQ6XM9EbgK6cT9mcH0bFdQWCa8Jw38q-pXRaU7PYM_IlNjerEW3pzTzgeDBGsY/s1600/4.JPG" height="247" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 34: Mounting platform for motor</td></tr>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinlp535T-sNmYMj5MM3CwsJ_Y_pekNoS8eScdB-T3ElQVGxxb2ozQNiASAr_WvAcOqhq2dua-6w9HN-tX51mCT1DttUMSAjKavTcJEbcb8dlD2fhHwO9-6cs3flb9EZgvI5-2G4Gsw6NMv/s1600/3.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinlp535T-sNmYMj5MM3CwsJ_Y_pekNoS8eScdB-T3ElQVGxxb2ozQNiASAr_WvAcOqhq2dua-6w9HN-tX51mCT1DttUMSAjKavTcJEbcb8dlD2fhHwO9-6cs3flb9EZgvI5-2G4Gsw6NMv/s1600/3.JPG" height="247" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 35: Clamping of cylindrical rods</td></tr>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxAldp3q7zTzk5X40klX3A3NnFr4TnU4pRl05PyRajU_DRPdJrRwDvHWdvdJfHs955UDYPJ1EiARQEBq-1PibUxQuFGiNegrd9bNjf7efI1EaaWzk-64K3Urm8SSbPnPl9t7bnStCgGuDv/s1600/2.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxAldp3q7zTzk5X40klX3A3NnFr4TnU4pRl05PyRajU_DRPdJrRwDvHWdvdJfHs955UDYPJ1EiARQEBq-1PibUxQuFGiNegrd9bNjf7efI1EaaWzk-64K3Urm8SSbPnPl9t7bnStCgGuDv/s1600/2.JPG" height="247" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 36: Cylindrial rods with mounting platforms</td></tr>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjAl49Jh_xlydX-ND-znmMWw9yV_l2aKZUycmVtOtii5FN8z4Lf5nNpEcopIhng0jC7p9UPAgXxddrPMM1swbkCvfrSEK3tDDOmTzgXKBdJBkq8dlr_xMISsAezLGG-ktSKzcjh8T03pDJ/s1600/1.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjAl49Jh_xlydX-ND-znmMWw9yV_l2aKZUycmVtOtii5FN8z4Lf5nNpEcopIhng0jC7p9UPAgXxddrPMM1swbkCvfrSEK3tDDOmTzgXKBdJBkq8dlr_xMISsAezLGG-ktSKzcjh8T03pDJ/s1600/1.JPG" height="247" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 37: Mounting of motors with propellers</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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By obtaining the appropriate details of the main frame, Both Bing Zhi and I have to work on our concepts based on the given length constraints. <br />
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For Bing Zhi, he created a crash proof structure that has been improved. The whole structure is made out of carbon fiber cylindrical rods. As the structure consists of many individual parts that need to be connected together, different kind of connectors are bing used to connect a part to another part. The following CAD drawing shows the actual structure.<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgK54NLMAlnsR382_sbaTI4xbEe-DVavWgrefChuqIJiuyQQP9zv3BUSk9gU35vdJQPBQI5DzYeTx57PtMyLPdux6r433kJj69faXxzqa6y4m6ZRpuhSXToDsYxeDMsD1xx23hlxH4lJyoH/s1600/Bingzhi.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgK54NLMAlnsR382_sbaTI4xbEe-DVavWgrefChuqIJiuyQQP9zv3BUSk9gU35vdJQPBQI5DzYeTx57PtMyLPdux6r433kJj69faXxzqa6y4m6ZRpuhSXToDsYxeDMsD1xx23hlxH4lJyoH/s1600/Bingzhi.JPG" height="300" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 38: CAD drawing of crash proof structure</td></tr>
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As for my latest concept of the terrestrial drive system, the design is inspired from a bicycle's wheel. At the bicycle's wheel, a wheel hub that consists of bearings is connected to main wheel. The wheel hub enable full rotation of the wheel when it is connected to the main frame of bicycle. <br />
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The two wheels act as travelling mechanism. Four cylindrical rods are used to provide support and stiffnes to the structure. A bearing system is placed at the center of each wheel. By placing two shafts that will be fixed to the quadrotor main frame, the bearing systems allows the wheels to rotate. The structure will be built around the quadrotor with shafts connected to the center of the quadrotor.<br />
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<tr><td class="tr-caption" style="text-align: center;">Figure 39: CAD drawing for terrestrial drive system<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNuErh6s8vy4gZlYj3JGCTy5pGqZox0keylbRn3pupuCrvNdXjsts1NxZCLUA1VsOAxRtS6McBxpqXW-3vvR5Eu18ftRloTT8j3pYojXVHoUVhYP1h45MabfG5m81eCsFjxm30FNl9TwvA/s1600/13.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNuErh6s8vy4gZlYj3JGCTy5pGqZox0keylbRn3pupuCrvNdXjsts1NxZCLUA1VsOAxRtS6McBxpqXW-3vvR5Eu18ftRloTT8j3pYojXVHoUVhYP1h45MabfG5m81eCsFjxm30FNl9TwvA/s1600/13.JPG" height="308" width="400" /></a></div>
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Figure 40: Quadcopter with terrestrial drive system</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
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As Jeremy has to create a interchangeable battery system for the quadrotor, his concept is to create a sliding tray for the battery pack to rest on. The sliding tray will be dependent on a rack and pinion actuator located at the bottom of the interchangeable battery system. The structure is designed in a manner that allows the quadcopter to fly in and land into position so that the battery can be replaced easily <br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIdLOM7XoTOQapYJRi0j3aOa2j8VddOO0SBGw-R1S640pj-Ln4ygTjQD2EofVFU671v7zAbDsPIOchJNK2MKilIdr3eyCDkhd0NksBglG-h1td-POYyXm6eBfHwJDstpBaByvSZyv_JzaX/s1600/jeremy2.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIdLOM7XoTOQapYJRi0j3aOa2j8VddOO0SBGw-R1S640pj-Ln4ygTjQD2EofVFU671v7zAbDsPIOchJNK2MKilIdr3eyCDkhd0NksBglG-h1td-POYyXm6eBfHwJDstpBaByvSZyv_JzaX/s1600/jeremy2.JPG" height="320" width="310" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 41: Top view of system</td></tr>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNjGal1240YepHAIjBYYt1IBCa_aOGTZFQSrXy3coJ84G6rt_I7qW9rr2SmFzkmTHSFfkkbygtyrRpYS9JGavpCxDwclcuxeX9NFKU0K2mNhJyi3DokPplreeH2jbxseuaKH0SQnuUYhjI/s1600/jeremy1.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNjGal1240YepHAIjBYYt1IBCa_aOGTZFQSrXy3coJ84G6rt_I7qW9rr2SmFzkmTHSFfkkbygtyrRpYS9JGavpCxDwclcuxeX9NFKU0K2mNhJyi3DokPplreeH2jbxseuaKH0SQnuUYhjI/s1600/jeremy1.JPG" height="320" width="274" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 42: Bottom view of system</td></tr>
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These are the updates for this week. Feel free to comment below.<br />
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<br />Anonymoushttp://www.blogger.com/profile/15965041539378309349noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-56930566090678453872014-03-09T11:59:00.004-07:002014-03-09T11:59:49.248-07:00Hello all!<br />
Jeremy updating the blog for this week.<br />
At the start of this week we finalised the different concepts that we were going to use. At the same time each member presented his chosen concept and would be proceeding with it.<br />
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By the way this is the end of week 6. The end draws near....<br />
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First off we have Angus,<br />
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Based on calculations, he has determined the number of motors needed for different propeller blades.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjs8G8PKbGoMa-ITCVXAduuB3un71m2S_2SaOX7q-dnciD2FIrBOcA5a7jwfFc2M5yLu4kzIIBqrWSRmGFR4jcRzmnq1NPULMATbFWsIqAhKf8BIK4FkVyFP3wvQUQp6AuOmbr-f9Bbwn4I/s1600/motorbladetable.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjs8G8PKbGoMa-ITCVXAduuB3un71m2S_2SaOX7q-dnciD2FIrBOcA5a7jwfFc2M5yLu4kzIIBqrWSRmGFR4jcRzmnq1NPULMATbFWsIqAhKf8BIK4FkVyFP3wvQUQp6AuOmbr-f9Bbwn4I/s1600/motorbladetable.JPG" height="185" width="320" /></a></div>
<span style="font-size: x-small;">Figure 26. Propeller configuration</span><br />
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From this he is also able to select the number of battery and capacity required. More calculations coming his way to take into account drag.<br />
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Next up is Bing Zhi.<br />
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He will be conducting experiments to calculate the amount of bending a carbon fibre rod can take.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgz1KDt0-Ml0BPXOVC937rQRqxePPc0lpENH9nSxDdHfo0xkkiqRwGVOlbEloCoQohzlVVwoEKXerHMO96IaS8hLELCzEaxWYwEFzbt9gL3K4dorBJcUrFabU6NFk3n6knWUzAapsTQXqJX/s1600/bending+rod.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgz1KDt0-Ml0BPXOVC937rQRqxePPc0lpENH9nSxDdHfo0xkkiqRwGVOlbEloCoQohzlVVwoEKXerHMO96IaS8hLELCzEaxWYwEFzbt9gL3K4dorBJcUrFabU6NFk3n6knWUzAapsTQXqJX/s1600/bending+rod.JPG" height="317" width="320" /></a></div>
<span style="font-size: x-small;">Figure 27. deflection equations</span><br />
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He is also looking into possible work of increasing the drag of the quadcopter during free fall. Very interesting work going on.<br />
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And next we have Edwin.<br />
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He has designed a test sample to simulate a load on the structure of the main piece.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXI4O_V6-Xs96oj83yJXQM9FM5LckFL1RFPeL7oY0sTSq2E_1assbpZFiCQziom8cw0-XeT8Qcy2O55z5Ja9LuIQcG81akdTFRl054kFNyf4uxmKjLcYs9LiupiCmx_VYxjPUzvgNUOtb8/s1600/edwin.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXI4O_V6-Xs96oj83yJXQM9FM5LckFL1RFPeL7oY0sTSq2E_1assbpZFiCQziom8cw0-XeT8Qcy2O55z5Ja9LuIQcG81akdTFRl054kFNyf4uxmKjLcYs9LiupiCmx_VYxjPUzvgNUOtb8/s1600/edwin.JPG" height="211" width="320" /></a></div>
<span style="font-size: x-small;">Figure 28. Test rig for central structure</span><br />
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The part was 3D printed and its use to test the force the joints can withstand before failure.<br />
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Next up we have JD,<br />
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He will working closely with Angus to complete the design of experiment for the motor selection.<br />
He is also doing work on the microcontroller board, the arduino leonardo. We'll be posting snippets of the coding soon.<br />
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On my side I have started on the docking bay design.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgD0wfx-8uGnGMBM5d0HI0Xbu9HIN3vfz2NKffgAksAB6SwQULQihhGH4pFV-cYKfhB0FzVKJpYRamvP2H73obvAvQ16GLEpnmINbr-p6T61UVfL8OgeYI7DJe5XCYU8uZsM0KyVqliu80a/s1600/base.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgD0wfx-8uGnGMBM5d0HI0Xbu9HIN3vfz2NKffgAksAB6SwQULQihhGH4pFV-cYKfhB0FzVKJpYRamvP2H73obvAvQ16GLEpnmINbr-p6T61UVfL8OgeYI7DJe5XCYU8uZsM0KyVqliu80a/s1600/base.JPG" height="195" width="320" /></a></div>
<span style="font-size: x-small;"> Figure 29. Docking bay design</span><br />
And lastly we have Leonard.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0M26zkOC9zZoU6bGROBAOJXTkPFFmg3lQ2Eky1_BhyvOao767fnlSGgFvQp0WXTVa_YAF9o_sKBfaW91dupR_p_f3NtD2ImDSHKJJkAc0MMsWbmn8ZJaJul5N5IRAji8DQEox5ZKgwzHP/s1600/b6759c7eb1a7da5a1d858e2729a398cb.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0M26zkOC9zZoU6bGROBAOJXTkPFFmg3lQ2Eky1_BhyvOao767fnlSGgFvQp0WXTVa_YAF9o_sKBfaW91dupR_p_f3NtD2ImDSHKJJkAc0MMsWbmn8ZJaJul5N5IRAji8DQEox5ZKgwzHP/s1600/b6759c7eb1a7da5a1d858e2729a398cb.jpg" height="240" width="320" /></a></div>
<span style="font-size: x-small;">Figure 30. Rolling terrestrial drive</span><br />
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This drawing is an initial form and it will be converted into a cad drawing.<br />
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That's all for this week! Feel free to comment below.l33thttp://www.blogger.com/profile/16871573399858223702noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-73470223243893477122014-03-02T01:51:00.000-08:002014-03-02T01:51:11.477-08:00March is here!!Hi readers of this blog!<br />
JD here updating the blog this week!<br />
The month of March is finally here and the quadcopter team was busy writing up our Interim report for our supervisors last week!<br />
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Here are the progress of what our team has done this week besides writing up our interim report,<br />
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Progress 1: Crash protection cage<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi40hK5oLDOklLW2abid6oHbdCQJALDf2YjhLPGd_cqcslmSa-Ce_JDuhQbuRew9GDWd7kE28SWF5VKfqTAkZmuz5VFv_vS7ht9wIjya9IPFOX4E-VPOTqUPjuAuqK14lNHp06GxJqb5xXq/s1600/20140224_192111.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi40hK5oLDOklLW2abid6oHbdCQJALDf2YjhLPGd_cqcslmSa-Ce_JDuhQbuRew9GDWd7kE28SWF5VKfqTAkZmuz5VFv_vS7ht9wIjya9IPFOX4E-VPOTqUPjuAuqK14lNHp06GxJqb5xXq/s1600/20140224_192111.jpg" height="320" width="240" /></a></div>
Shown above is the crash protection cage concept that has been made by our group mate Bing Zhi. It's concept look like an inverted ice cream with a cone, the one in white it's actually just a stand for it to be able to showcase it to our lecturers.<br />
Even though it is just a rough concept, it can work well on different surfaces!<br />
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<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dyJCDdk9LR04T1TWxEbHoQ1zl1WxsyENS4y92miMMv1aSiqm4UDE2tUsJ2NRgBCGe68a8oyLT3DtukmReVvcw' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
Like seen above it works on a flat surface and even grass!!<br />
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Progress 2: Test thrust rig<br />
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For Angus and me we've actually done a few experiments where we took down data on the propellers, motor and the ESC of the system. Basically it's a continuation of what we've trying to achieve since 2 weeks ago.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIrRsblpfeLntPPKdqsB6eiOecRdWbklAbnyuXMEC8-8W7zbikrqO_M5Nl0olAPNad62D6xzAjUSYJLwLoSoet2ZbkTV2e3qp_U379LkPgXVImvX1A22OKcnir7DTvAJdl4VBLo_F3DIHu/s1600/2014-02-19+14.56.47.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIrRsblpfeLntPPKdqsB6eiOecRdWbklAbnyuXMEC8-8W7zbikrqO_M5Nl0olAPNad62D6xzAjUSYJLwLoSoet2ZbkTV2e3qp_U379LkPgXVImvX1A22OKcnir7DTvAJdl4VBLo_F3DIHu/s1600/2014-02-19+14.56.47.jpg" height="320" width="180" /></a></div>
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Like seen on the picture above, we've actually added the tachometer which is used to measure the RPM of the blades, and see how fast it spins.<br />
Another thing that we've added is the multimeter to see how much a motor with an ESC takes the power from the battery. It is certainly surprising that this small motor on it's maximum RPM actually takes around 10 Amp of current with the supply of 11.1 V, which makes it's power consumption to be about 110W!!!<br />
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We've actually compared the datas we've calculated with the supposed theoretical calculations of the motor max RPM without the blades.<br />
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The datas can be seen on this link<br />
<a href="https://www.dropbox.com/s/s0354bxjun5p7bk/Experiment%20250214.xlsx">Experiment 25.02.14 data</a><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh78aM2moNmpMOY3-XLFGrykHGu6vQYbLHY6eePVuuE8DrRYrtOksbTLEZjiGg2pxec6JK9djBoz1bED9tI06kWRdclLJxteai6R4xzL0xrBukmywaGFDqlPTDPCKzGylkTdENeBMIziX5O/s1600/2014-02-24+11.59.12.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh78aM2moNmpMOY3-XLFGrykHGu6vQYbLHY6eePVuuE8DrRYrtOksbTLEZjiGg2pxec6JK9djBoz1bED9tI06kWRdclLJxteai6R4xzL0xrBukmywaGFDqlPTDPCKzGylkTdENeBMIziX5O/s1600/2014-02-24+11.59.12.jpg" height="180" width="320" /></a></div>
And the picture above shows me and angus testing the motor with the protection walls and the cool protective glasses that we wear.<br />
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There are still a lot more stuffs to be done on our part, and school is getting busier each week, but keep tuning on this channel!! We will update the blog every week and you will see it fly soon!!!!!!!<br />
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Take care!!!<br />
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JDAnonymoushttp://www.blogger.com/profile/02341178988581103427noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-85458032683516208042014-02-19T21:04:00.006-08:002014-02-19T21:04:58.931-08:00<div style="text-align: justify;">
Hi all! This week's update is kinda late. But here is a summary of all our work done for the past week:-</div>
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<span style="color: red;"><b>1) Design of Experiment</b></span></div>
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<span lang="EN-SG">Angus and JD, the Systems Engineer and Controls Engineer respectively, were busy trying to set up a static bench test to analyse propeller performance. The experiment is initially designed to use weighing machine to measure lifting force/thrust (from weight to newtons). But through Angus's improvisation, he offered the dead weights from his personal training set (see Figure 11 below).</span></div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGD1KWxmP1mLs2inWqbhTiGjwJCZnWnmPumQxIqsyxSsMDKcN7ZwhSr0iAkzRJxxpVx-MOaEKUeytVwHSPvC6bBov-snU8CrcDRaLkMbMUE9kFjVaWwWQtM7jZq0Kyhh7kaqNhhKoua0vw/s1600/2014-02-09+19.51.31.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGD1KWxmP1mLs2inWqbhTiGjwJCZnWnmPumQxIqsyxSsMDKcN7ZwhSr0iAkzRJxxpVx-MOaEKUeytVwHSPvC6bBov-snU8CrcDRaLkMbMUE9kFjVaWwWQtM7jZq0Kyhh7kaqNhhKoua0vw/s1600/2014-02-09+19.51.31.jpg" height="200" width="112" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 11: Dead weights from Angus's personal training set</td></tr>
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Angus was so excited to use the 3D printer that he created a video introducing it.</div>
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Video 2: Angus getting excited about 3D printing.</div>
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The first test rig was 3D-printed without screw threads. This led to a lot of frustration and dampened the initially excited mood from our team. Subsequently, the design was slightly changed and printed again. As you can see in Figures 12-14, thankfully this time it worked well!</div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn9PFxMbenq8He_6uxTukyIBXh_XbWpmcSxR6_0Cq_i_YWlymYfYhWiW0jkY8jgB4CnAiFR3S_qmeCYKV6u3xYIKW0HEXnug8GkDZCa-DX96SwO5gzI71iKFYlYndYXX118xS2PMW6Gg-C/s1600/2014-02-18+12.51.08.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjn9PFxMbenq8He_6uxTukyIBXh_XbWpmcSxR6_0Cq_i_YWlymYfYhWiW0jkY8jgB4CnAiFR3S_qmeCYKV6u3xYIKW0HEXnug8GkDZCa-DX96SwO5gzI71iKFYlYndYXX118xS2PMW6Gg-C/s1600/2014-02-18+12.51.08.jpg" height="180" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 12: 3-D printer in action</td></tr>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEicYYXpbgAV8-KY7aWrL1-JBvEl63XjvCtv2pwbn0OLb1_toweFcA0-DAtnd8yDM15sNrywYqelOBGIwKFj2at5M_ijtOB43AZ5UrvdivR3v4PGdQKyhdj1scpSXM5MI4jAT3ck8y4_Sx03/s1600/2014-02-18+13.58.47.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEicYYXpbgAV8-KY7aWrL1-JBvEl63XjvCtv2pwbn0OLb1_toweFcA0-DAtnd8yDM15sNrywYqelOBGIwKFj2at5M_ijtOB43AZ5UrvdivR3v4PGdQKyhdj1scpSXM5MI4jAT3ck8y4_Sx03/s1600/2014-02-18+13.58.47.jpg" height="320" width="180" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 13: Motor mounting<br /></td></tr>
</tbody></table>
<div style="margin-left: auto; margin-right: auto; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHXYeXQN-npgeTLghK7iuWIsg7kSrmmNDGx3Go36MdgYKE-sHjt3PLAfWaZRab8Lk-dxr7C0aghvSbCsfl91-UUZnPnNRGc4JbaiFScEXBv00GQnvMlJ4kc4iJ3j8GXQmGWhq0N62oRWLd/s1600/2014-02-18+13.59.00.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHXYeXQN-npgeTLghK7iuWIsg7kSrmmNDGx3Go36MdgYKE-sHjt3PLAfWaZRab8Lk-dxr7C0aghvSbCsfl91-UUZnPnNRGc4JbaiFScEXBv00GQnvMlJ4kc4iJ3j8GXQmGWhq0N62oRWLd/s1600/2014-02-18+13.59.00.jpg" height="320" width="180" /></a></div>
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<div style="text-align: center;">
<span style="font-size: x-small;">Figure 14: 2nd test rig (finally working well)</span></div>
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For safety reasons, Dr Ahmed (Lead Supervisor) and Dr Michael (Controls Supervisor) helped us to set up the experiment (see Figure 15 below).</div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiT9GZwqXOKWEapUkjd2bPokonuI-VAUbK5IbfG-75axiyX191UH4_iX4m7PRsMT_KlmYa0NTuckfxQ5LwmfgjemWuCJC39ZrlcbusPj-gFHtJSRx6ypku2ksv7WNxB-FhfhAwBwNldRhuN/s1600/2014-02-17+12.00.55.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiT9GZwqXOKWEapUkjd2bPokonuI-VAUbK5IbfG-75axiyX191UH4_iX4m7PRsMT_KlmYa0NTuckfxQ5LwmfgjemWuCJC39ZrlcbusPj-gFHtJSRx6ypku2ksv7WNxB-FhfhAwBwNldRhuN/s1600/2014-02-17+12.00.55.jpg" height="320" width="180" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 15: Dr Michael and Dr Ahmed (left and centre of picture respectively)<br /></td></tr>
</tbody></table>
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<b><span style="color: red;"><br /></span></b></div>
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<b><span style="color: red;">2) </span><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; line-height: 18.479999542236328px;"><span style="color: red;">Autonomous Batteries Changer</span></span></b></div>
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<b><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 18.479999542236328px;"><span style="color: red;"><br /></span></span></b></div>
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<span lang="EN-SG">Jeremy started to print parts to conceptualize his ideas. In Figure 16 below, the battery carriage is made up of 2 parts. The red one is to be attached onto the QR's centre frame base. Its 'T' design allows it to be slotted onto the white part, which will be holding the battery and copper strips. The only drawback of the printed parts, which otherwise works well, is the very tight tolerance between the touching surfaces of the 'T' design.</span></div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbekL4pycl-M0ji0Cq45dwNnQCarawpDmruPauPp4-D0NErDJLjljfIoqD0bSDzXOnzIK0hH344p5qX0w2xpzgH4VbsIBR_cX3hCt6IgQnmMzBMDz_bPJMhCmZ0ZbEN3q4MlcxQsUdhDaF/s1600/photo.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbekL4pycl-M0ji0Cq45dwNnQCarawpDmruPauPp4-D0NErDJLjljfIoqD0bSDzXOnzIK0hH344p5qX0w2xpzgH4VbsIBR_cX3hCt6IgQnmMzBMDz_bPJMhCmZ0ZbEN3q4MlcxQsUdhDaF/s1600/photo.JPG" height="320" width="240" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 16: Printed battery carriage</td></tr>
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<b><span style="color: red;"><br /></span></b></div>
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<b><span style="color: red;">3) </span></b><b style="background-color: white; color: red; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; line-height: 18.479999542236328px;">Protective Crash Cage</b></div>
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<b><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 18.479999542236328px;"><span style="color: red;"><br /></span></span></b></div>
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<span lang="EN-SG"></span></div>
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<span lang="EN-SG">This week, 3 concepts were generated based on 3 interesting principles that can be found in the world today.</span></div>
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<span lang="EN-SG"><br /></span></div>
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<span lang="EN-SG">In Figure 17 below, the concept design is based on the working principle of a gomboc. Gombok is a convex three-dimensional homogeneous body. The stable and unstable points of equilibrium will help to keep the structure recover to its initial position. </span></div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgA47O4FetYMCpqVKYQMhn1pP-ngckH55hQiXuuP1sf8j5nniihzgX-Wj51YM8RvMk04HY-CY72Vm02DkYTqRDaO10LISHI0yTKjqBzlv6noCWTZvJymH3y7oNu98KLl7qvpUsgyiailbiZ/s1600/indian+star+tortoise.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgA47O4FetYMCpqVKYQMhn1pP-ngckH55hQiXuuP1sf8j5nniihzgX-Wj51YM8RvMk04HY-CY72Vm02DkYTqRDaO10LISHI0yTKjqBzlv6noCWTZvJymH3y7oNu98KLl7qvpUsgyiailbiZ/s1600/indian+star+tortoise.jpg" height="239" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 17: Design based on gomboc principle</td></tr>
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<span lang="EN-SG">In Figure 18, the possibility of using the gyroscopes is explored. The gyroscope has the capability of maintaining the QR's orientation using the principles of angular momentum. The whole frame structure will then be mounted onto the inner circle. The inner circle will then change the response to an external torque in the z-axis direction.</span></div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJhcsCiKRwsvRAnkdK1bysk9VHr534kkxil7NRz5tgKHWzCqKcaJtaB0IjsyB-O7PpSdPIgmbSAukesswQy4WXgwZRYxSqpVoo2_Q6OwzmxweOzQSy23EbL0k3YVfb-41reONhXte-7ylz/s1600/gyroscope.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJhcsCiKRwsvRAnkdK1bysk9VHr534kkxil7NRz5tgKHWzCqKcaJtaB0IjsyB-O7PpSdPIgmbSAukesswQy4WXgwZRYxSqpVoo2_Q6OwzmxweOzQSy23EbL0k3YVfb-41reONhXte-7ylz/s1600/gyroscope.jpg" height="240" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 18: Design based on gyroscope principle</td></tr>
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<span lang="EN-SG">In Figure 19, there is a possibility of using individual protection cages to each propellers. The principle of self-recovery in this structure depend on the four individual motor operating at each universal joint. But this is certainly a disadvantage as it will cause the whole protection cage to be very heavy. Knowing that lightweight is significantly important in the overall design, this concept may not be very suitable.</span></div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgihpssf3oOHi7XPDm6eAIwwmuBKS-wuEQ66-ON1PsP2KhyNdOcgxVad763UCUGjb7bsV7KZ7Pn8YB7i135lzjfwCj2eqh9HeBsUoQRlYfG6C5XPjc-ernHFcnYkMB6twfpwe4eiOFIzmqn/s1600/Universal+Joint.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgihpssf3oOHi7XPDm6eAIwwmuBKS-wuEQ66-ON1PsP2KhyNdOcgxVad763UCUGjb7bsV7KZ7Pn8YB7i135lzjfwCj2eqh9HeBsUoQRlYfG6C5XPjc-ernHFcnYkMB6twfpwe4eiOFIzmqn/s1600/Universal+Joint.jpg" height="236" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 19: Individual propeller protective cage</td></tr>
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These concepts generation will be followed by material analysis and selection, which will be updated next week. =)</div>
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<b><span style="color: red;">4) </span><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; line-height: 18.479999542236328px;"><span style="color: red;">Terrestrial Drive System</span></span></b></div>
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<b><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 18.479999542236328px;"><span style="color: red;"><br /></span></span></b></div>
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<span lang="EN-SG">With evaluation for the three different
concepts, the four wheels and two wheels concepts are not very feasible as the
motor systems that are required to drive the wheels, will be very heavy for the
QR. The most ideal concept that can be used for the QR is the
cylindrical rolling cage concept.<o:p></o:p></span></div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPswbxrdEqXqO-YxBJTEKt10ql4vIN9hHbIEL3-h9AlrLTqiLsL23z-25ahPSWzbVS7m1nNDDaHoPF3WAds2FKeIaMzU4n-oB_oVM8H1r-OYVYlStpwPbqcf_kbZYSjGq1zgQMxZln5pio/s1600/leonard.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPswbxrdEqXqO-YxBJTEKt10ql4vIN9hHbIEL3-h9AlrLTqiLsL23z-25ahPSWzbVS7m1nNDDaHoPF3WAds2FKeIaMzU4n-oB_oVM8H1r-OYVYlStpwPbqcf_kbZYSjGq1zgQMxZln5pio/s1600/leonard.jpg" height="291" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 20: CAD drawing of the rolling cage design</td></tr>
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<span lang="EN-SG"></span></div>
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<span lang="EN-SG">Figure 20 shows the CAD
drawing of the cylindrical cage. The cylindrical cage will be surrounding the
QR and acts as a protective cover and a terrestrial driving system.
This concept is not drawn to exact size but rather has been scaled down for 3D
printing purpose. With the 3D printing, it allowed the user to visualise the
concept to see if it is workable.</span></div>
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<span lang="EN-SG"><br /></span></div>
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<span lang="EN-SG">It consists of four cylindrical rods, two
side structures and two shaft structures. The four cylindrical rods are used to
connect the two side structures together. The two shaft structures are required
to be attached to the bottom of the main QR’s structure. They will allow
the side structures to rotate and hence the cylindrical cage will be able to
rotate when the QR is travelling on the ground. If the parts are faulty,
the structure allows easier replacement of the components.<o:p></o:p></span></div>
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<b><span style="color: red;">5) M</span><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; line-height: 18.479999542236328px;"><span style="color: red;">ainframe Design</span></span></b></div>
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<b><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13px; line-height: 18.479999542236328px;"><span style="color: red;"><br /></span></span></b></div>
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3 shapes and materials were used to evaluate using evaluation matrix, material selection index, and shape factor for use on the beams of the QR arms. In addition, these 3 designs were CAD modeled and simulated on SolidWorks based on the cantilever beam analysis with 30N end point load. Figures 21 and 22 shows examples of the simple simulation analysis on SolidWorks.</div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizBRVG2KlDEfb1HwRw5VFAFDm-GA2OFC5BzLEtlk9FGgYXsmbeb66F0n0dIaHH7GDkr4al3IqypxXTuMbGzug9pf4QhgCJZygxUdastdCG6L2eS3ljgt4aIk78stpj0ojUsT92l7YWJnkj/s1600/E1.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizBRVG2KlDEfb1HwRw5VFAFDm-GA2OFC5BzLEtlk9FGgYXsmbeb66F0n0dIaHH7GDkr4al3IqypxXTuMbGzug9pf4QhgCJZygxUdastdCG6L2eS3ljgt4aIk78stpj0ojUsT92l7YWJnkj/s1600/E1.jpg" height="193" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 21: Maximum stress acting on beam</td></tr>
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<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsJo3oxdRkvUI6DWNK51Z1qprn_sHGpAbtIFA36PVQaIeyHlgvcG4m8qTlWHH7Cr2XZuuPDOvuO1hDgtVMFrg6vzXNauayZqBcCwmGcb5bUmpPjhJkuv8hqMO34VCYJL0GH-rULklykQ9H/s1600/E2.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsJo3oxdRkvUI6DWNK51Z1qprn_sHGpAbtIFA36PVQaIeyHlgvcG4m8qTlWHH7Cr2XZuuPDOvuO1hDgtVMFrg6vzXNauayZqBcCwmGcb5bUmpPjhJkuv8hqMO34VCYJL0GH-rULklykQ9H/s1600/E2.jpg" height="196" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 22: Maximum deflection of beam</td></tr>
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The results are tabulated and shown in Figure 23 below.<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjan7jKDu_GnICuTMwD-X639vkbYtEYrXsvhlaE1Wua_btVCEdrARN4qKLloV4K4wlThDlk-a1r4Gkpf6Gkd2UvXZpzHoV2EkFekw7WibhdI7jCIqWNvVXUptcDCS_s1_0MIGtGp199jXGC/s1600/IMG_20140220_124706.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjan7jKDu_GnICuTMwD-X639vkbYtEYrXsvhlaE1Wua_btVCEdrARN4qKLloV4K4wlThDlk-a1r4Gkpf6Gkd2UvXZpzHoV2EkFekw7WibhdI7jCIqWNvVXUptcDCS_s1_0MIGtGp199jXGC/s1600/IMG_20140220_124706.jpg" height="240" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 23: Results tabulation</td></tr>
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Based on findings, ideally for a pure cantilever beam, it is best to construct the beam out of Carbon Fibre composites with I-beam cross-section. However, it may be difficult to use carbon fibre composites to construct the fillet between the I-beam's flange and web. In addition, the QR's flight will cause the beams to be subjected to load on the Ix and Iy axis, as well as torsion loads. Thus in this application, carbon fibre composites is best used with circular cross section tubes.</div>
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In summary, we are all aiming to develop concepts to integrate and interface all different modules together, bearing in mind our concept freeze date is on the 3rd of March.</div>
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Anonymoushttp://www.blogger.com/profile/04075387069261982271noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-41135455829485136472014-02-12T20:05:00.004-08:002014-02-12T20:06:29.127-08:00Monday, 10/2/2014<br />
<br />
Guys these are the update of our finding and some problem identified. An initial design requirement was also created so as to explore possible solution, this serves as a good guide to kick start the project. <br />
<br />
Topic is divided into 6 section, this let you as a reader has a better understanding on our project. =) <br />
<br />
<ul>
<li>Section 1 - Design of Quadcopter </li>
<li>Section 2 - Protective cage (possible material and problem identified)</li>
<li>Section 3 - Terrestrial drive system, also acting as a protective cage</li>
<li>Section 4 - Autonomous batteries changes</li>
<li>Section 5 - Frame structure of the quadcopter </li>
<li>Section 6 - Control system. </li>
</ul>
<span style="color: red;"><b>Section 1 - Design of Quadcopter </b></span><br />
<span style="color: red;"><b><br /></b></span>
<span style="color: #cc0000;">Propeller </span><br />
<br />
<ul>
<li>Assuming a propeller diameter and pitch</li>
<li>Using Abbott or Bob Boucher's equations to find the power absorbed by propeller(Dickey, 2012)</li>
<li>Manipulate the Momentum equations so that propeller speed can be found (Hepperle, 1996; Dickey, 2012)</li>
<li>Ensure that the propeller tip speed does not reach the speed of sound</li>
<li>Propeller speed and power compare against plotted graph data and check for efficient (Brandt and Selig, 2011; Selig and Ananda, 2011)</li>
<li>Ensuring calculated speed is not at the propeller peak efficient</li>
<li>50% of peak efficient<b style="color: red;"> </b></li>
</ul>
<div>
<span style="color: #cc0000;">Motor</span></div>
<div>
<span style="color: #cc0000;"><br /></span></div>
<br />
<div>
<ul>
<li>Kv is the RPM when 1 v is supplied</li>
<li>Assuming there is no losses</li>
<li>Power = rad/s * Nm</li>
<li>Maximum power = 0.5 angular speed * 0.5 torque; 100% thrust</li>
<li>0.5 power; 50% thrust</li>
<li>Hovering power = Kv*voltage/4</li>
</ul>
<div>
<span style="color: #cc0000;">Building a Quadcopter </span></div>
</div>
<div>
<div>
<ul>
<li>Estimate the overall weight, propeller speed and diameter</li>
<li>Using power equations from Abbott equation or Bob Boucher's electric motor handbook equation</li>
<li>Relate it with propeller Momentum theory</li>
<li>Using the propeller coefficients</li>
<li>Choosing battery that can give a flight time of 15min</li>
</ul>
</div>
</div>
<span style="color: red;"><b></b></span><br />
<span style="color: red;"><b>Section 2 - Protective cage (possible material and problem identified)</b></span><br />
<br />
<span style="color: #cc0000;">Possible Material </span><br />
The aim of this protective crash cage don't just serve as a collision crash proof structure. The selection of material plays an important role in this project mainly because of the limitation of the flight time, additional weight incur will definitely reduces it's capability. <br />
<br />
Research available on the web and journal paper suggested that material like carbon fiber has a ratio of high strength to low density but this possibility doesn't limit the exploration of our selection.<br />
<br />
Any suggestion of possible material? (woods, Styrofoam, plastic (ABS, polycarbon and etc) feel free to give comment!!!!!!!!<br />
<br />
<span style="color: #cc0000;">Problem Identified</span><br />
Quadcopter is designed to be robust to both indoor and outdoor environment, complex programming and sensor can be applied into our system, but this does not eliminate the possibility of Quadcopter crashing into any object. Thus, once Quadcopter get into an impact or collision; it's must has the ability to regain "self-recovery"<br />
<br />
These are the possible principle solution from our research:<br />
<br />
<ol>
<li>Gyroscope Gimball copter design ( from EPFL) </li>
<li>Gecko like feet/arm adopting suction effect to regain recovery </li>
<li>Insect like beetle to lift themselves </li>
<li>Center of gravity (G.O.G)</li>
</ol>
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</div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpcu2KtBsZc9LLLei1e5C5DmR3BCwuhxSBNZcLz7KsQU_NbudKy581XmG2uFVmtQN6V6KApUITSm9NiFhyo1BmZKBmSJLIPBVOvBMB8zH_xiAFTSVeJjOWBxeVkih8DNDXpkroqiE7MMXj/s1600/20140210_101217.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpcu2KtBsZc9LLLei1e5C5DmR3BCwuhxSBNZcLz7KsQU_NbudKy581XmG2uFVmtQN6V6KApUITSm9NiFhyo1BmZKBmSJLIPBVOvBMB8zH_xiAFTSVeJjOWBxeVkih8DNDXpkroqiE7MMXj/s1600/20140210_101217.jpg" height="240" title="Figure 6 - Possible concept design " width="320" /></a></div>
<div style="text-align: center;">
Figure 6 - Possible concept design </div>
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<div style="text-align: left;">
Figure 6 shows the possible concept design generated using "inverted ice cream". Interesting? Please leave a comment. </div>
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<b><span style="color: red;"> Section 3 - Terrestrial drive system, also acting as a protective cage</span></b><br />
<b><span style="color: red;"><br /></span></b>
<span style="color: red;">Requirement : </span><br />
<br />
<ul>
<li>Two roles, ability to maneuver on the ground and serve as a protective cage for the Quadcopter </li>
<li>Ability to conserve 50% battery while maneuvering </li>
<li>Absorb shock from a height of 2m</li>
<li>Steer and reverse </li>
</ul>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmhstB3_hyt-g_ux1ZNpk8l8aflSITfkGzTwPCQfWVFXpFVkeqwleVkDgv7tIXbgL4yZrr866YMCkyuSAgCGTP76JjBHMIJgJLbsq_Bo56JB-1CIUNwa2ua4fEObuUTdjJjJuMkYrg9j3I/s1600/skywalker.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmhstB3_hyt-g_ux1ZNpk8l8aflSITfkGzTwPCQfWVFXpFVkeqwleVkDgv7tIXbgL4yZrr866YMCkyuSAgCGTP76JjBHMIJgJLbsq_Bo56JB-1CIUNwa2ua4fEObuUTdjJjJuMkYrg9j3I/s1600/skywalker.JPG" height="274" width="320" /></a></div>
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Figure 7 - Skywalker Copter </div>
<br />
Figure 7 shows a hobbies toys which has the above capabilities, but these are normally on single axis propeller.<br />
<br />
Comment on this similar approach will be greatly appreciate =)<br />
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<b><span style="color: red;">Section 4 - Autonomous batteries changes</span></b><br />
<br />
Autonomous or automated batteries changer is a platform for quadcopter to replace it's empty batteries and ready for take off! sound cool huh? that was an idea or concept selected by one of our team mate.<br />
<br />
We would like to share our the list of item needed<br />
<br />
<ul>
<li>Two batteries</li>
<li>possible battery carriage weighting <150g </li>
</ul>
<div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCCjxzT2gMF6FZHZaNYhj1i_C8myLmpvn2pmnWBu9UHJH-DSygLm9ZwF11pFmiNE-_OJoqS31pk9TBCS3SwlDdxY8N1b09nOVUsW2TmANsGapJbWHPA7tFpUeSOa2o6qG-LFAdlMMAfFD0/s1600/platform.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCCjxzT2gMF6FZHZaNYhj1i_C8myLmpvn2pmnWBu9UHJH-DSygLm9ZwF11pFmiNE-_OJoqS31pk9TBCS3SwlDdxY8N1b09nOVUsW2TmANsGapJbWHPA7tFpUeSOa2o6qG-LFAdlMMAfFD0/s1600/platform.png" height="177" width="320" /></a></div>
<div style="text-align: center;">
Figure 8 - Mechanical Platform without linear motion </div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgl9PWxHd7y5qa5AEKOO4lo1VWjhTfOwcw-z0d2XlDa86iLCjrdA98o6G3JfLxwoi5oiIkll0KLikwFTWUXCxVfgHZpygO95BAM7gYMIJjqItT09DQFtzyyvs79MEjd-7HD88l8U3hTMOlO/s1600/docking+bay.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgl9PWxHd7y5qa5AEKOO4lo1VWjhTfOwcw-z0d2XlDa86iLCjrdA98o6G3JfLxwoi5oiIkll0KLikwFTWUXCxVfgHZpygO95BAM7gYMIJjqItT09DQFtzyyvs79MEjd-7HD88l8U3hTMOlO/s1600/docking+bay.png" height="200" width="320" /></a></div>
<div style="text-align: center;">
Figure 9 - Docking Bay </div>
<b><span style="color: red;"><br /></span></b>
<b><span style="color: red;"> Section 5 - Frame structure of the quadcopter </span></b><br />
<b><span style="color: red;"><br /></span></b>
This section describe the main frame structure of the quadcopter, the X-configuration will be used. But we are open to any possible solution or ideas.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGahAZWF2wJFa9z8gdGWN5iJ25ezkXvbtLn1Hk8DlkMstWpj_yaMWVOlxllcKH75Drj_LH-8-9fNDMtCXWOASi4StYbtFM0rmwqWn5xIqtfYI5H5I8pp9iwUKu-ZtjxaQyIX4tj045sIDk/s1600/quad+diagram.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGahAZWF2wJFa9z8gdGWN5iJ25ezkXvbtLn1Hk8DlkMstWpj_yaMWVOlxllcKH75Drj_LH-8-9fNDMtCXWOASi4StYbtFM0rmwqWn5xIqtfYI5H5I8pp9iwUKu-ZtjxaQyIX4tj045sIDk/s1600/quad+diagram.JPG" height="185" width="320" /></a></div>
<div style="text-align: center;">
Figure 10 - X configuration </div>
<br />
<br />
Figure 10 is the configuration selected, this configuration has an advantage to maneuver the copter around balancing it's axis, hopefully this will conserve energy used.<br />
<br />
<br />
<span style="color: red;"><b>Section 6 - Control System</b></span><br />
<span style="color: red;"><b><br /></b></span>
Control system is currently under further experimentation refer to first post for details. More updates will be available next week =)<br />
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That's all for the updated for this week, hey guys/ladies please do leave a comment on our post after reading, it is much appreciate!<br />
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<br />Anonymoushttp://www.blogger.com/profile/03674877782181123750noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-25691639566206878512014-02-05T18:51:00.002-08:002014-02-05T18:59:01.081-08:00Getting started by Consultation with Supervisors, Local Shop Staff and Study of Existing QuadrotorOur team consisted of<br />
<ul>
<li>Dr Ahmed - Leading Supervisor</li>
<li>Dr Didier Talamona - Cage protection cage and modular terrestrial drive Supervisor</li>
<li>Dr Eugene Wong - Structure Design Supervisor</li>
<li>Dr Michael Lau - Control System Design Supervisor</li>
</ul>
<ul>
<li>Angus Tang - System Level Design (SysLeD)</li>
<li>J.D. Chua - Control System Design (ConSyD)</li>
<li>Edwin Goh - Robust Quadrotor Structure Design (RoQStr)</li>
<li>Jeremy Yeo - Modular Payload and Battery Loader (MoPBal)</li>
<li>Wong B.Z. - Robust Crash Protection Cage (RoCProC)</li>
<li>Leonard Lim - Motor Terrestrial drive (MoTerD)</li>
</ul>
<div>
So our journey being with our ConSyD, J.D. Chua consultation with Dr Micheal Lau and local shop staff at Fook Hua building. We were really new at building a flying machine therefore the motor in Figure 1 and ESC in Figure 2 brought were just for experimental purposes.</div>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrkzorOJss5IGjbkaoJaH8nkXyUEn-T3AfhRUr0pBsWlk1l2zmSOYHu2hAHRMizzpfEuiPH5n4fT7Jp8wfW1r8dXW5P-DfxaMoKxDNyT-Ui_S8yo5VVy7muI2do9AufDtfCzH5Mu_QRxAI/s1600/Motor+5V.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrkzorOJss5IGjbkaoJaH8nkXyUEn-T3AfhRUr0pBsWlk1l2zmSOYHu2hAHRMizzpfEuiPH5n4fT7Jp8wfW1r8dXW5P-DfxaMoKxDNyT-Ui_S8yo5VVy7muI2do9AufDtfCzH5Mu_QRxAI/s1600/Motor+5V.jpg" height="180" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 1 - 5v Motor</td></tr>
</tbody></table>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWz2Y74gj4MpOq5TpvC0qce2c_aYb7sTrXrYtsfhgQoC1gqrGrH6Q54TdxcNyNa50PlFm0wToS7eYpgC0J9544_XsAUXhAT4TA2YsuXxM34p4AbUQGMSgyLp4awpePg42VLLXtoEahiF_P/s1600/Electronic+Speed+Controller+20amp.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWz2Y74gj4MpOq5TpvC0qce2c_aYb7sTrXrYtsfhgQoC1gqrGrH6Q54TdxcNyNa50PlFm0wToS7eYpgC0J9544_XsAUXhAT4TA2YsuXxM34p4AbUQGMSgyLp4awpePg42VLLXtoEahiF_P/s1600/Electronic+Speed+Controller+20amp.jpg" height="179" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 2 - Electronic Speed Controller 20Amp</td></tr>
</tbody></table>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhkqy4zwdfTSzlE8bx_daeK93BUbI7EsJNu-UqGk845ZDQs2qovZ60k7WMsJLXL7kpjJpmB9Bdt0NlLb0HSs8pD-PPsbDrB5OqoVb6r-2SxJ9HcQS5TX6VRpzeauOi0xR9f6xoWku-nZoQN/s1600/ArduPilot+Mega+2.6+Kit+with+GPS+(microprocessor).jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhkqy4zwdfTSzlE8bx_daeK93BUbI7EsJNu-UqGk845ZDQs2qovZ60k7WMsJLXL7kpjJpmB9Bdt0NlLb0HSs8pD-PPsbDrB5OqoVb6r-2SxJ9HcQS5TX6VRpzeauOi0xR9f6xoWku-nZoQN/s1600/ArduPilot+Mega+2.6+Kit+with+GPS+(microprocessor).jpg" height="180" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure3 - The brain, ArduPilot Mega 2.6 Kit with GPS </td></tr>
</tbody></table>
<div class="separator" style="clear: both; text-align: left;">
In order to understand more about quadcopter we were ripped the existing quadcopter apart after our first and last flight. Our first attempt to fly an existing quadcopter in Figure 4 and 5 with Dr Ahmed. </div>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgW5j83KFEilHgtM7N-gHRdB8Y0Rzazn93zPz38ZWjjZFjTK1yhERKUCsqdwztHZeckuDKH-kScj4Euk_JqZdg37j9kQnrXDoRz-byQP1izSGrLsgLAdYBuXE5u_-mwAI7ExwF4vLGl6HVO/s1600/2014-02-05+16.27.24.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgW5j83KFEilHgtM7N-gHRdB8Y0Rzazn93zPz38ZWjjZFjTK1yhERKUCsqdwztHZeckuDKH-kScj4Euk_JqZdg37j9kQnrXDoRz-byQP1izSGrLsgLAdYBuXE5u_-mwAI7ExwF4vLGl6HVO/s1600/2014-02-05+16.27.24.jpg" height="320" width="180" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Figure 4 - First flight with Dr Ahmed with Existing quadcopter </td></tr>
</tbody></table>
<table cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgDaWIKZmUgeN98ONPMdz8PYUvGb2P8g1IZRK9IKYOHeG-LVIg9I1QS2BizvzPpuy23S7Nr_L2BNx-BBIQ_0NpEVgbGAiqjaP0uCCPg3sDg17-GhWaFpIp-mrApgSfaBPP-AtuHasJcEgM/s1600/2014-02-05+16.27.28.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgDaWIKZmUgeN98ONPMdz8PYUvGb2P8g1IZRK9IKYOHeG-LVIg9I1QS2BizvzPpuy23S7Nr_L2BNx-BBIQ_0NpEVgbGAiqjaP0uCCPg3sDg17-GhWaFpIp-mrApgSfaBPP-AtuHasJcEgM/s1600/2014-02-05+16.27.28.jpg" height="320" width="180" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><div style="text-align: center;">
Figure 5 - First flight with Dr Ahmed with Existing quadcopter </div>
<div style="text-align: left;">
<br /></div>
<div style="text-align: left;">
<span style="font-size: small;">After 2 weeks of meddling with software and hardware </span><span style="font-size: small;">our ConSyD, J.D. Chua managed to communicate to the 5v motor, he was overjoyed. </span><br />
<span style="font-size: small;"><br /></span>
<span style="font-size: small;">Please enjoy the video and stay tuned, cheers!!!</span><br />
<span style="font-size: small;"><br /></span></div>
<div class="separator" style="clear: both; text-align: center;">
<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dyxh3W7Av-M3BS_YLKqdu1RAgYODYI9w3Hcz5jsEbJGxm-3rG0U3BeH5mgcjDpEb4DUps2yr1FxbN6I6I3QSg' class='b-hbp-video b-uploaded' frameborder='0'></iframe></div>
<div class="separator" style="clear: both; text-align: center;">
Video 1 - The motor is alive!</div>
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<span style="font-size: small;"><br /></span></div>
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Anonymoushttp://www.blogger.com/profile/10547303205062852329noreply@blogger.com0tag:blogger.com,1999:blog-5966641361938916670.post-39417351338713301552014-02-04T04:35:00.001-08:002014-02-04T04:40:35.633-08:00We are a group of mechanical engineering students from Newcastle University International Singapore doing our Final year project on Quadrotor. The purpose of this blog is to record and share the progress of building a Quadrotor from scratch. We welcome any comment, feedback and advice while we embark on this journey of no return.<br />
<br />
Our project requirements<br />
<br />
<ul>
<li>a 3 kg Hybrid Quadrotor</li>
<li>the hybrid part is to swap between crash cage of 10 m and terrestrial drive to save 50% of the battery use</li>
<li>which is able carry additional 3kg of payload</li>
<li>maximum distance between propeller tip is 1 m</li>
<li>minimum fight time is 15 min</li>
</ul>
<div>
Stay tuned, cheers!!!!</div>
Anonymoushttp://www.blogger.com/profile/10547303205062852329noreply@blogger.com0