Gallery: Naval Research Laboratory Flies Their Hydrogen-Powered Ion Tig...

 
Ion Tiger 902 after a continuous, unrefueled 48hr 1min endurance flight on liquid hydrogen. (left to right): Dan Edwards, Mike Baur, Steve Carruthers, Joe MacKrell, Rick Stroman, Mike Schuette, Drew Rodgers, Chris Bovais.

A team from the U.S. Naval Research Laboratory (NRL) have broken their own record after flying their hydrogen fuel cell powered-Ion Tiger UAV for an astonishing 48 hours and 1 minute last month. The UAV, which used liquid hydrogen fuel in its  new, NRL-developed, cryogenic fuel storage tank and delivery system, broke its previous record of 26 hours and 2 minutes which it set in 2009.

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