All Discussions Tagged 'CH640' - Zenith Aircraft Builders and Flyers2024-03-29T12:28:26Zhttps://zenith.aero/forum/topic/listForTag?tag=CH640&feed=yes&xn_auth=noCH-640 - Left Wing - Top Cover Skins - Episode 10tag:zenith.aero,2021-04-28:2606393:Topic:8338212021-04-28T20:09:39.409ZCHRISTIAN TREMBLAYhttps://zenith.aero/profile/CHRISTIANTREMBLAY
<p>Hi everyone,</p>
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<p>There is my last video on youtube about my CH640 from plan Build Aircraft Project.</p>
<p>See the Following link below. Questions are always welcome.</p>
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<p><a href="https://youtu.be/YryV-18Yi6U">https://youtu.be/YryV-18Yi6U</a></p>
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<p>Christian Tremblay<br/>From plan CH640-0059</p>
<p>Hi everyone,</p>
<p></p>
<p>There is my last video on youtube about my CH640 from plan Build Aircraft Project.</p>
<p>See the Following link below. Questions are always welcome.</p>
<p></p>
<p><a href="https://youtu.be/YryV-18Yi6U">https://youtu.be/YryV-18Yi6U</a></p>
<p></p>
<p>Christian Tremblay<br/>From plan CH640-0059</p> Chris Heintz info on Z or L Stiffeners calculationtag:zenith.aero,2020-12-07:2606393:Topic:7877262020-12-07T22:03:16.386ZCHRISTIAN TREMBLAYhttps://zenith.aero/profile/CHRISTIANTREMBLAY
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<tr class="test"><td><hr class="sr-only"></hr><a name="7477"></a><div class="row"><div class="col-md-12"><div class="pull-left"><img class="img-rounded" height="40" src="https://groups.io/g/zenith/profilephoto/8941317" width="40"></img> <span> </span><a href="https://groups.io/g/zenith/profile/@ChristianTremblay">Christian Tremblay</a></div>
<div class="pull-right"><font class="text-muted" size="-1"><span title="Dec 7, 2020 1:16pm">1:16pm</span><span> </span></font> <span> …</span></div>
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<tr class="test"><td><hr class="sr-only"/><a name="7477"></a><div class="row"><div class="col-md-12"><div class="pull-left"><img src="https://groups.io/g/zenith/profilephoto/8941317" width="40" height="40" class="img-rounded"/><span> </span><a href="https://groups.io/g/zenith/profile/@ChristianTremblay">Christian Tremblay</a></div>
<div class="pull-right"><font size="-1" class="text-muted"><span title="Dec 7, 2020 1:16pm">1:16pm</span><span> </span></font> <span> </span><a rel="nofollow" href="https://groups.io/g/zenith/message/7477"><span class="hidden-xs">#7477 </span></a></div>
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<div id="msgbody176785430"><div class="forcebreak" dir="auto"><p>Finally, I found some information, for my questionning, from the master itself Chris Heinz. My only question remaining is the thickness of the material of the floor stiffeners for CH640.<br/> <br/> CH in is book "<em>Flying on your own wings</em>", page 176 discuss on Stiffeners : "<em>The graph on p. 162 shows that the effective width</em><span> </span>(of the flanges of "Z" or "L" stiffeners)<span> </span><em>is b' = 10 t</em><span> </span>( " t " is the thickness of the material use for stiffeners).<span> </span><em>Because</em><span> </span>(b')<span> </span><em>this will be very small</em><span> </span>(to small for riveting)<span> </span><em>for our thin stiffeners, b'/t = 20 or 30 times</em><span> </span>(of " t ")<span> </span><em>are better and still not too heavy</em><span> </span>(CH said that any dimension over 10t only add weight - not resistance). <br/> <br/> Note : (parenthesis comments are from me).<br/> <br/> Hypothesis : we want to use 0.025 alum material - If <br/> t is thickness of material<br/> b' is the flange<br/> <br/> Then : <br/> <br/> for t = 0.025<br/> t = 0.025 x 10 = b'<br/> b' = 0.25 (or 1\4 on an inch) - this is the minimun effective resistance of a bend stiffeners<br/> t = 0.025 x 20 = b' of .500 inch or half inch for the flange<br/> t = 0.025 x 30 = b' of .750 inch or 3/4 inch for the flange<br/> <br/> and Then <br/> for t = 0.032<br/> t = 0.032 x 20 = b' of .640 inch or 5/8 for the flange<br/> t = 0.032 x 30 = b' of .960 inch or 15/16 inch for the flange</p>
<p>Has I understand it, this exclude the radius bend material dimension itself. This explain why the plan have always, most ot the time, dimension from 18mm to 20 mm for the flanges.<br/> <br/> Then for my " Z " stiffeners - in 0.025 or 0.032 :<br/> <br/> First side at the base Z shoud be = +- 20 mm<br/> Second side (vertical bar) required 2 times 20 mm = +- 40 mm (one flange for connecting the 2 radius)<br/> Third top side +- 20 mm<br/> <br/> Radius :</p>
<p>First base radius = 3 mm radius (for 90e angle)<br/> Top base radius = 6 mm radius (for 135e angle)<br/> <br/> Tell me if I am wrong or miss something<br/> <br/> Christian Tremblay<br/> CH640 from plan 0059</p>
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</table> CH-640 - Making a fiberglass fairing for my tail wing (part 2 of 2)tag:zenith.aero,2020-12-03:2606393:Topic:7849992020-12-03T23:16:33.517ZCHRISTIAN TREMBLAYhttps://zenith.aero/profile/CHRISTIANTREMBLAY
<h5>Hi guys,<br></br><br></br>For video, click or copy this link :</h5>
<h5><a href="https://www.youtube.com/watch?v=-wPMAUKFd8Y&t=1s">https://www.youtube.com/watch?v=-wPMAUKFd8Y&t=1s</a></h5>
<h5><span>This video series of 2, is about making Left and Right Fairings for the tail wing of my CH640 Zenith aircraft project. This video is the second part of 2 videos. In this video, you will see the foam and fiberglass will to cover those ribs skeletons and making of the fairings…</span></h5>
<h5>Hi guys,<br/><br/>For video, click or copy this link :</h5>
<h5><a href="https://www.youtube.com/watch?v=-wPMAUKFd8Y&t=1s">https://www.youtube.com/watch?v=-wPMAUKFd8Y&t=1s</a></h5>
<h5><span>This video series of 2, is about making Left and Right Fairings for the tail wing of my CH640 Zenith aircraft project. This video is the second part of 2 videos. In this video, you will see the foam and fiberglass will to cover those ribs skeletons and making of the fairings itself.<br/><br/>Christian Tremblay<br/>CH640-0059 Build from plan</span></h5> CH-640 - Making fiberglass fairings for Tail Wingtag:zenith.aero,2020-11-24:2606393:Topic:7782572020-11-24T03:35:40.605ZCHRISTIAN TREMBLAYhttps://zenith.aero/profile/CHRISTIANTREMBLAY
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<p>Hi Guys,<br/><br/>For who interest about making Fairings. See my last video on my CH640 project.<br/>Click the links belows for my youtube video channel :<br/><br/><a href="https://www.youtube.com/watch?v=4j1g1LLeN3I" target="_blank" rel="noopener">https://www.youtube.com/watch?v=4j1g1LLeN3I</a><br/><br/>Christian Tremblay</p>
<p>CH640 - 0059 building from plan</p>
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<p>Hi Guys,<br/><br/>For who interest about making Fairings. See my last video on my CH640 project.<br/>Click the links belows for my youtube video channel :<br/><br/><a href="https://www.youtube.com/watch?v=4j1g1LLeN3I" target="_blank" rel="noopener">https://www.youtube.com/watch?v=4j1g1LLeN3I</a><br/><br/>Christian Tremblay</p>
<p>CH640 - 0059 building from plan</p>