The Bell XV-3 is an American tiltrotor aircraft developed by Bell Helicopter for a joint research program between the United States Air Force and the United States Army in order to explore convertipla
The second Bell XV-3 during flight testing (c.1959)
Bell XV-3 in a hover, 1955. This was first version with 3-blade rotors and crashed.
XV-3 test, in vertical flight with 2 blade rotors
A powered lift aircraft takes off and lands vertically under engine power but uses a fixed wing for horizontal flight. Like helicopters, these aircraft do not need a long runway to take off and land,
Bell Boeing V-22 Osprey flown by the U.S. Marines
A Spanish Navy EAV-8B Harrier II+