September 11, 2007
By Alton K. Marsh
A London-based company, QinetiQ, has maintained its increasing line of successes in the New Mexico desert with solar-powered unmanned aerial vehicle (UAV).
The latest, a 66-pound, carbon-fiber Zephyr High Altitude Long Endurance UAV described as hand-launched despite its 59-foot wingspan, stayed aloft 54 hours at 58,355 feet. It won't be a record, though, because the secret test wasn't registered in advance with the Fédération Aéronautique Internationale, the official keeper of world aviation records.
The research vehicle was sponsored by the U.K. Ministry of Defense. It carried a surveillance payload during the flight and on a second flight to 52,247 feet lasting nearly 34 hours. It is powered by paper-thin silicon arrays and survived at night on lithium-sulfur batteries.
Aircraft Power and Fuel,
Helicopter training is generally very safe. So why do run-on takeoffs and landings feel so wrong?
NetJets has added a new safety feature to its long-range fleet: a doctor who is always in.
Shell announced Dec. 3 the development of an unleaded aviation fuel that will be submitted for certification as a "performance drop-in" avgas replacement.
AOPA thanks our members for their continued support in protecting the freedom to fly.