Helios - Solar powered UAV


	Helios - Solar powered UAV

adamfalls

12-14-2007 5:42 PM

136 views

adamfalls says:

Could lightweight PVs and Carbon Fiber make this light enough now to handle the extra battery storage needed?...

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/18db711c-f688-41c9-8200-1e205d03f9d5/FA629FFB-8404-48C6-8BC1-3536856B73F9/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.vectorsite.net/twuav_15.html" href="http://www.vectorsite.net/twuav_15.html" style="font-size: 11px;">www.vectorsite.net</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.vectorsite.net/img/98ED7F1F-BE8D-4EBA-852B-18810A8EBD40" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">solar panels that generated peak
power of 11.4 kW to drive its eight small electric motors.  The
RAPTOR/Pathfinder could carry a payload of 41 kilograms (90 pounds).</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">AEROVIRONMENT RAPTOR/PATHFINDER:</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">spec                    metric              english
   _____________________   _________________   _______________________
wingspan                30.5 meters         100 feet
   length                  2.4 meters          8 feet
   weight                  245 kilograms       541 pounds
cruise speed            57 KPH              36 MPH / 31 KT
   service ceiling         21,000 meters       68,900 feet
   endurance               indefinite (in principle)</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">Initial flights were
still on battery power, and though it could fly using solar power, the
battery storage system didn't have the capacity to keep the aircraft flying
all night long.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">They were
passed on to NASA for the ERAST program.  The RAPTOR/Talon became the
"Demonstrator 2", and the RAPTOR/Pathfinder simply became the "Pathfinder".</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">
The Demonstrator 2</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">with a
front-mounted tractor propeller</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">made it unsuitable for atmospheric
sampling,</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.vectorsite.net/twuav_15.html">In contrast,
the Pathfinder underwent substantial evolution at NASA's hands.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/FA629FFB-8404-48C6-8BC1-3536856B73F9/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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