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QinetiQ's Zephyr UAV Exceeds Official World Record For Longest Duration Unmanned Flight
White Sands NM (SPX) Sep 12, 2007 QinetiQ's Zephyr High Altitude Long Endurance (HALE) Unmanned Aerial Vehicle (UAV) has exceeded the official world record time for the longest duration unmanned flight with a 54 hour flight achieved during trials at the US Military's White Sands Missile Range in New Mexico. The flight trials were funded through the Ministry of Defence (MOD) research programme. The duration of the flight exceeded the current official FAI world record for unmanned flight which stands at 30 hours 24 minutes set by Northrop Grumman's RQ-4A Global Hawk on 22 March 2001. However because there was no FAI official present at White Sands it may not stand as an official world record. Launched by hand, Zephyr is an ultra-lightweight carbon-fibre aircraft with a wingspan of up to 18 metres but weighing just 30 kg. By day it flies on solar power generated by amorphous silicon arrays no thicker than sheets of paper that cover the aircraft's wings. By night it is powered by rechargeable lithium-sulphur batteries that are recharged during the day using solar power. The trials validated recent modifications that have improved the efficiency of Zephyr's power system. These have included new solar arrays supplied by United Solar Ovonic, a full flight-set of Sion Power batteries as well as a novel solar-charger and bespoke autopilot developed by QinetiQ, all of which were being flown for the first time. During the trials the same aircraft was flown twice while carrying a surveillance payload - first for 54 hours to a maximum altitude of 58,355 feet, and then for 33 hours 43 minutes to a maximum altitude of 52,247 feet. Paul Davey, Zephyr business development director at QinetiQ, said: "The possibilities suggested by unmanned flight are truly exciting and with these trials Zephyr has secured its place in the history of UAV development. Both flights were achieved in the face of thunderstorms and debilitating heat in the hostile environment of the New Mexico high desert in the summertime. They have proved that an autonomous UAV can be operated on solar-electric power for the duration required to support persistent military operations." Community Email This Article Comment On This Article Related Links UAV News - Suppliers and Technology
Thompson Files: Air Force drones are best
Arlington, Va. (UPI) Sep 10, 2007 The only upside to the heavy burden the U.S. Army is carrying in Iraq is an abundance of money. Congress may not know how to deal with IEDs or save the marriage of a soldier deploying for his fourth tour in Mesopotamia, but it sure knows how to spend money, and right now the U.S. Army is getting pretty much everything it asks for. That's a distinct departure from budgetary tradition, which in the past has relegated the Army to third place behind the Air Force and Navy in the competition for resources. |
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