The US military flew an experimental, hybrid-electric stealth drone shaped like the B-2 Spirit
The XRQ-73, a 1,250-pound drone, uses a mix of electric and jet-fuel propulsion, which is supposed to make it much quieter and fly more efficiently.
The XRQ-73, a 1,250-pound drone, uses a mix of electric and jet-fuel propulsion, which is supposed to make it much quieter and fly more efficiently.
This article was originally published at: https://www.businessinsider.com/us-military-flew-experime...