<div><font color="#000000"><font size="2"><font face="arial narrow,sans-serif"><b>Hi Thomas,<br></b></font></font></font></div><div><font color="#000000"><font size="2"><font face="arial narrow,sans-serif"><b>Thanks for the updates. Please </b></font></font></font><u><font color="#000000"><font size="2"><font face="arial narrow,sans-serif"><b>u</b></font></font></font><font color="#000000"><font size="2"><font face="arial narrow,sans-serif"><b>n</b></font></font></font></u><font color="#000000"><font size="2"><font face="arial narrow,sans-serif"><b><u>-</u>subscribe us from your mailing list.</b></font></font></font></div>
<div><font color="#000000"><font size="2"><font face="arial narrow,sans-serif"><b>Best regards. <br></b></font></font></font></div><br><div class="gmail_quote">On Wed, Jul 6, 2011 at 12:33 AM, Thomas Weeks <span dir="ltr"><<a href="mailto:tweeksjunk2@theweeks.org">tweeksjunk2@theweeks.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div style="font-family:'Bitstream Vera Sans Mono';font-size:9pt;font-weight:400;font-style:normal">
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">This is a question for you high power guys who have been shooting H and up birds for years.</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Background:</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">-------------</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">So my first HP rocket is about ready to fly... and I plan on using it to get my L1 (H) and L2 (J) certifications. The L1 is no problem. Up, pop, float down. But as most of you know.. L2 certification also requires a written test (no problem) as well as "Active recovery", or a way of measuring your altitude and ejecting multiple chutes at precisely the right times to safely recover my rocket.</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Well.. I've now mostly built my avionics bay, or "e-bay" and wired in a GWiz LCX flight computer:</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.facebook.com/photo.php?pid=1049573&l=3b9cc7e689&id=1844028171" target="_blank">http://www.facebook.com/photo.php?pid=1049573&l=3b9cc7e689&id=1844028171</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.facebook.com/photo.php?pid=1052820&l=fde4de7d63&id=1844028171" target="_blank">http://www.facebook.com/photo.php?pid=1052820&l=fde4de7d63&id=1844028171</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.facebook.com/photo.php?pid=1052821&l=8f9d1e56c2&id=1844028171" target="_blank">http://www.facebook.com/photo.php?pid=1052821&l=8f9d1e56c2&id=1844028171</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.facebook.com/photo.php?pid=1052825&l=878029acee&id=1844028171" target="_blank">http://www.facebook.com/photo.php?pid=1052825&l=878029acee&id=1844028171</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.facebook.com/photo.php?pid=1052823&l=079bcf0bff&id=1844028171" target="_blank">http://www.facebook.com/photo.php?pid=1052823&l=079bcf0bff&id=1844028171</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.facebook.com/photo.php?pid=1052824&l=d39d643ca4&id=1844028171" target="_blank">http://www.facebook.com/photo.php?pid=1052824&l=d39d643ca4&id=1844028171</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Here are some other pictures of other people's e-bay construction and products:</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.vanderbilt.edu/USLI/2011/media.php?gallery=jan_19_2010" target="_blank">http://www.vanderbilt.edu/USLI/2011/media.php?gallery=jan_19_2010</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.apogeerockets.com/electronics_bays.asp" target="_blank">http://www.apogeerockets.com/electronics_bays.asp</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.rocketryplanet.com/content/view/2960/95/#axzz1RIL7aYxk" target="_blank">http://www.rocketryplanet.com/content/view/2960/95/#axzz1RIL7aYxk</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">My Question:</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">-------------</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Anyway.. my question for Bob and other experienced Rocketeers..</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">What should I use for my flight computer's power safety switch?</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">So you're supposed to have a power arming safety circuit to ensure that your ejections charges don't blow before you launch the thing... They usually look something like this:</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://aeroconsystems.com/cart/products/RBF4-47-10.html" target="_blank">http://aeroconsystems.com/cart/products/RBF4-47-10.html</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">And are hung off something like a 1/8th " audio jack (where the normally closed circuit is open when the audio plug is in... and removing it completes (or closes) the circuit.. and powers up the computer). However.. I hear that the flight vibration can really make those switch contacts bounce around, which can reset the flight computer.. which leads to big expensive crashes. So a lot of folks use these high-G rated switches like this:</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://aeroconsystems.com/cart/products/PCB_Screw_Switch-110-0.html" target="_blank">http://aeroconsystems.com/cart/products/PCB_Screw_Switch-110-0.html</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">or</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><a href="http://www.aeroconsystems.com/electronics/switches.htm" target="_blank">http://www.aeroconsystems.com/electronics/switches.htm</a></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Not nearly as cool/sexy as the "yank it out" audio plug that I want to use. :)</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">So what do you other HP folks recommend? Slide switches? Hard wired toggles? Audio jack/plugs?</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Tweeks</p></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br><font style="color:rgb(51, 51, 51)" size="2"><i style="font-family:tahoma,sans-serif">~Kathryn Worley<br style="font-family:tahoma,sans-serif"></i></font><font style="font-family:tahoma,sans-serif;color:rgb(51, 51, 51)" color="#009900" size="2">(540)998-8752</font><br>
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