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News

QinetiQ's Zephyr UAV flies for three and a half days - unofficial UAV world record


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QinetiQ
: 25 August, 2008  (Special Report)
QinetiQ's Zephyr being launchedZephyr's reputation as the world's leading solar powered high-altitude long-endurance (HALE) Unmanned Aerial Vehicle (UAV) has been reinforced with a world-beating three and a half day flight at the US Army's Yuma Proving Ground in Arizona.
The solar powered plane flew for 82 hours 37 minutes, exceeding the current official world record for unmanned flight which stands at 30 hours 24 minutes set by Global Hawk in 2001 and Zephyr's previous longest flight of 54 hours achieved last year.

The UK Ministry of Defence has funded the development of Zephyr to date and has partnered with the US Department of Defense (DoD) under their Joint Capability Technology Demonstration (JCTD) Programme - which is designed to move urgently needed technologies rapidly into the hands of US forces in the field. The US DoD funded the demonstration flight under the Programme and this was the first time the two governments have participated in a joint demonstration of a HALE UAV.

JCTD projects are specially tailored to meet the needs of US combatant commands. Zephyr is supported by USCENTCOM, the combatant command with responsibility for Iraq and Afghanistan, along with the Office of Secretary of Defense (OSD) for Advanced Systems and Concepts (AS&C) and the US Army Space and Missile Defense Command (SMDC).

Launched by hand, Zephyr is an ultra-lightweight carbon-fibre aircraft. By day it flies on solar power generated by amorphous silicon solar arrays no thicker than sheets of paper that cover the aircraft's wings. By night it is powered by rechargeable lithium-sulphur batteries, supplied by SION Power Inc, which are recharged during the day using solar power.

The flight trial at Yuma took place between 28 and 31 July in the harsh conditions of the Sonoran Desert in mid summer with temperatures up to 45C (113F). Zephyr was flown on autopilot and via satellite communications to a maximum altitude of more than 60,000ft. The trial included a military utility assessment of a US Government communications payload.

Simon Bennett, Managing Director of QinetiQ's Applied Technologies business said: 'The Yuma Proving Ground in Arizona was an appropriate setting for Zephyr's world beating flight as many landmark aviation developments have taken place there in recent years. In addition to setting a new unofficial record, the trial is a step towards the delivery of Zephyr's capability for joint, real-time, battlefield persistent surveillance and communications to forces in the field at the earliest opportunity.'

Andrew Baird, Director Defence Technology and Innovation Centre, UK MoD said: 'MOD is very pleased with the success of the recent trial which demonstrated the potential capability of the technologies in Zephyr. This success has also reinforced the close working relationship between the UK and US on these key technologies.'

Potential applications for Zephyr include earth observation and communications relay in support of a range of defence, security and civil requirements.
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