Hydrogen Fuel-Cell UAV Makes Record Flight
Credit: NAVAL RESEARCH LABORATORY
Ion Tiger, a hydrogen-powered fuel-cell UAV under development by the Naval Research Laboratory (NRL), flew for 23 hr. 17 min. Oct. 9-10 at the Aberdeen Proving Ground, Md., setting an unofficial endurance record for a fuel-cell powered flight. The program, sponsored by the Office of Naval Research...
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