A lightweight, solar-powered plane built by British defence and security technology company QinetiQ has broken a world record for unmanned flight by staying aloft for 54 hours. The Zephyr, which has an 18-metre wingspan and weighs just 30 kilogrammes, smashed the previous best of 30 hours 24 minutes by nearly a whole day, flying to a maximum height of 58.355 feet.
QinetiQ’s Zephyr UAV exceeds official world record for longest duration unmanned flight

Solar plane flies into the night