V-22 Osprey

http://www.boeing.com/rotorcraft/military/v22/
The Bell Boeing V-22 Osprey is the first aircraft designed from the ground up to meet the needs of all four U.S. armed services. The tiltrotor aircraft takes off and lands like a helicopter. Once airborne, its engine nacelles can be rotated to convert the aircraft to a turboprop airplane capable of high-speed, high-altitude flight.
You can know a special aircraft carrier here.