Le moteur électrique est alimenté par de l’hydrogène cryogénique
Un extrait :
Researchers at the U.S. Naval Research Laboratory flew their fuel cell powered Ion Tiger UAV for 48 hours and 1 minute on April 16-18 by using liquid hydrogen fuel in a new, NRL-developed, cryogenic fuel storage tank and delivery system. This flight shatters their previous record of 26 hours and 2 minutes set in 2009 using the same vehicle, but with gaseous hydrogen stored at 5000 psi.
Liquid hydrogen is three times denser than 5000-psi compressed hydrogen. The cryogenic liquid is stored in a lightweight tank, allowing more hydrogen to be carried onboard to increase flight endurance. Success in flight requires developing a high quality, lightweight insulated flight dewar for the cryogenic fuel, plus matching the boil off of the cryogenic hydrogen to the vehicle fuel consumption.
Lire aussi
Modified Phantom-Eye Doubles Endurance, Altitude on Second…
Boeing Phantom Eye Rolled Out at St. Louis
Phantom-Eye Prepares for First Flight by this Summer
BirdEye 650LE Mini-UAV Uses Fuel Cell to Fly Six Hour…
Parker Hannifin and WATT Fuel Cell Team to Bring Commercial…
