Only once. . . <br><br><div class="gmail_quote">On Mon, Apr 7, 2008 at 9:59 AM, Gray E Fowler <<a href="mailto:gfowler@raytheon.com">gfowler@raytheon.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br><font face="sans-serif" size="2">But can Boeing do a Knife edge Loop?????</font>
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<td bgcolor="#f3f3f3" width="100%"><font color="#002060" face="Verdana" size="1"><b>Boeing
Successfully Flies Fuel Cell-Powered Airplane</b></font>
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<div><font color="#2f2f2f" face="Verdana" size="1">Boeing has, for the first
time in aviation history, flown a manned airplane powered by hydrogen fuel
cells. The recent milestone is the work of an engineering team at Boeing
Research & Technology Europe (BR&TE) in Madrid, with assistance
from industry partners in Austria, France, Germany, Spain, the United Kingdom
and the United States.<br>
A two-seat Dimona motor-glider with a 16.3 meter (53.5 foot) wingspan was
used as the airframe. Built by Diamond Aircraft Industries of Austria,
it was modified by BR&TE to include a Proton Exchange Membrane (PEM)
fuel cell/lithium-ion battery hybrid system to power an electric motor
coupled to a conventional propeller.<br>
Three test flights took place in February and March at the airfield in
Ocaña, south of Madrid, operated by the Spanish company SENASA. According
to Boeing researchers, PEM fuel cell technology potentially could power
small manned and unmanned air vehicles. Over the longer term, solid oxide
fuel cells could be applied to secondary power-generating systems, such
as auxiliary power units for large commercial airplanes. Boeing does not
envision that fuel cells will ever provide primary power for large passenger
airplanes, but the company will continue to investigate their potential,
as well as other sustainable alternative fuel and energy sources that improve
environmental performance.</font></div></td></tr></tbody></table>
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Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radomes and Specialty Apertures<br>
Technical Staff Composites Engineering<br>
Raytheon</font><br>_______________________________________________<br>
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<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br></blockquote></div><br><br clear="all"><br>-- <br><br>Keith Hoard<br>Collierville, TN<br>
<a href="mailto:khoard@gmail.com">khoard@gmail.com</a><br><br>