Liquid hydrogen fueled drone shatters endurance record

Researchers at the U.S. Naval Research Laboratory (NRL) have set a new continuous flight record with an electric drone powered by a fuel cell running from liquid hydrogen in cryogenic storage.

The Ion Tiger unmanned aerial vehicle (UAV) flew for 48 hours on April 16-18, shattering their previous record of 26 hours set in 2009 using the same vehicle, but instead powered by gaseous hydrogen stored at 5000 psi.

NRL researcher Karen Swider-Lyons said liquid hydrogen is three times denser than 5000-psi compressed hydrogen, allowing more hydrogen to be carried onboard to increase flight endurance. “Liquid hydrogen coupled with fuel-cell technology has the potential to expand the utility of small unmanned systems by greatly increasing endurance while still affording all the benefits of electric propulsion,” she said.

Stealthy electric powered drones are more desirable than noisy conventional hydrocarbon-fueled craft, but endurance issues have dogged electric UAVs until now.

To address the logistics of in-theater supply of fuel, Swider-Lyons proposes the in-situ manufacture of liquid hydrogen. “An electrolyzer-based system would require only water for feedstock, and electricity, possibly from solar or wind, to electrolyze, compress, and refrigerate the fuel,” she suggests.

Related:
Discuss this article in our forum
Supersonic UAV with sub-$100k price tag mooted
Researchers hack and commandeer drone
Nano-rod solar cell generates hydrogen

Source: U.S. Naval Research Laboratory

 

, ,

Comments are closed.
1958 Press Photo Ryan Firebee jet target drone selected as target for missions
$9.99 1958 Press Photo Ryan Firebee jet target drone selected as target for missions picture
1960 Sperry Rand Phoenix AZ autopilot remote control supersonic drones ad
$9.99 1960 Sperry Rand Phoenix AZ autopilot remote control supersonic drones ad picture
French alpine hunter w beret WWI DIEULEFIT Drone Alpes Photo Postcard RPPC
$9.0 French alpine hunter w beret WWI DIEULEFIT Drone Alpes Photo Postcard RPPC picture
Three Vintage Photos ~ QH-50 DASH Drone Anti-Submarine Helicopter * RARE *
$7.95 Three Vintage Photos ~ QH-50 DASH Drone Anti-Submarine Helicopter * RARE * picture
1958 Sperry Gyroscope~USAF drone~test anti-missile Ad
$9.99 1958 Sperry Gyroscope~USAF drone~test anti-missile Ad picture

Powered by WordPress. Designed by WooThemes