Lunar Landing Research Vehicle (LLRV) flight #1-16-61F with Bell 47 Helicopter providing chase support.
An inflight view from the left side of the Lunar Landing Research Vehicle, is shown in this 1964 NASA Flight…
Helios Prototype Flying Wing on lakebed at Edwards, Calif.
X-2 Number 1 (#674) landing with skids deployed.
AeroVironment technicians carefully line up attachments as a fuel cell electrical system is installed on the Helios Prototype solar powered…
The first flight of a large aircraft to be powered by electric fuel cells began with a takeoff at 8:43…
The Helios Prototype is an enlarged version of the Centurion flying wing, which flew a series of test flights at…
The long, slender wing of the Perseus B remotely piloted research aircraft can be clearly seen in this photo, taken…
A long, slender wing and a pusher propeller at the rear characterize the Perseus B remotely piloted research aircraft, seen…
