USN seeks multi-day flight with Hybrid Tiger


US Navy (USN) researchers are set to begin testing a prototype Group 2 unmanned aerial vehicle (UAV) that could attain upwards of three days endurance.

Hybrid Tiger is the follow on to the US Naval Research Laboratory’s (NRL’s) Ion Tiger, which flew for 48 hours using proton exchange membrane fuel cells and gaseous hydrogen stored at 5,000 psi in a cryogenic liquid hydrogen fuel tank.

Hybrid Tiger’s first flight is expected to occur by May 2018.

NRL's Hybrid Tiger effort integrates a hydrogen fuel cell, solar photovoltaics, and energy-aware guidance algorithms into a single UAV to achieve multi-day endurance. (IHS Markit/Geoff Fein)NRL’s Hybrid Tiger effort integrates a hydrogen fuel cell, solar photovoltaics, and energy-aware guidance algorithms into a single UAV to achieve multi-day endurance. (IHS Markit/Geoff Fein)

“[With] the Ion Tiger programme concluded,…



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