Solar-run UAV Zephyr flies for record 82 hours
The flight trial at Yuma took place from July 28 to 31 in tough conditions of Sonoran Desert with temperatures hovering 45°C (113°F). 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.
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.
On the success of Zephyr, Simon Bennett, Managing Director of QinetiQ's Applied Technologies Business said that the Yuma Proving Ground in Arizona was an appropriate setting for Zephyr's world beating flight as many landmark aviation developments have taken place 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," Bennett said.
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."
