Photos: The U.S. Military’s Prototype for a Flying Submarine
Capable of carrying 66 tons of cargo, the Aeroscraft could bring airships back to the skies
- By Mark Strauss
- Smithsonian magazine, April 2013
(David Vincent Wolf)
Like a submarine, the airship can reduce buoyancy by compressing helium in tanks and then sucking in air to act as ballast. Buoyancy can be increased by releasing the helium, which displaces the air.