British MoD Acquires Solar-Powered Zephyr UAV

Airbus' solar-powered aircraft Zephyr completes two 18-day flights

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Pseudo-Satellite Drone Flies for 25 Days Straight, Sets Endurance

Airbus' solar-powered aircraft Zephyr successfully beams broadband

Author Andrew Chuter

Britain's New Spy Planes Are Practically Spacecraft

Solar Impulse may turn into stratospheric drone - SWI

The Engineer - Zephyr high-altitude solar powered aircraft gears

Zephyr Ultra-Long Endurance UAVs - Defense Industry Daily

Zephyr Solar-Powered HALE UAV - Airforce Technology

UK military buys third £4m Zephyr drone for 'persistent

PDF) Analysis of Several Research Problems in Near Space Vehicles

The solar-powered drones that can stay airborne for a year