AeroVironment Test-Flies Liquid-Hydrogen-Powered UAV

by John McHale Military & Aerospace Electronics, 17 Aug 2005 The Global Observer, a liquid-hydrogen-powered unmanned aerial vehicle, has completed flight tests. Officials at AeroVironment in Monrovia, Calif., made the announcement regarding their High-Altitude Long-Endurance (HALE) system earlier this summer. AeroVironment’s Global Observer HALE aircraft will be able to operate at altitudes as high as 65,000 feet for more than a week without refueling and with a flexible payload-carrying capacity of as much as 1,000 pounds, AeroVironment officials say. Read more