The Sikorsky XV-2, also known by the Sikorsky Aircraft model number S-57, was a planned experimental stoppable rotor aircraft, designated as a convertiplane, developed for a joint research program between the United States Air Force and the United States Army. The program was canceled before construction of the prototype began.
| XV-2 | |
|---|---|
| |
| Role | Stoppable rotor aircraft |
| National origin | United States |
| Manufacturer | Sikorsky Aircraft |
| Status | Canceled |
| Number built | 0 |
Design and development
editThe XV-2 was developed as part of a joint U.S. Air Force and U.S. Army program intended to explore technologies to develop an aircraft that could take off and land like a helicopter but fly at faster airspeeds, similar to a conventional airplane. The XV-2's stoppable-rotor design was intended to allow it to hover and fly at low speed like a conventional helicopter. It utilized a single-blade single-rotor design; a counterweight provided stability to the rotor system,[1] while a tip-jet arrangement powered the rotor, which retracted into the upper fuselage when stopped, the XV-2 then flying like a conventional aircraft on delta wings.[2] A single jet engine was provided for forward flight, and was to be equipped with thrust vectoring for steering in hover and for anti-torque control in lieu of a tail rotor.[3]
The XV-2 prototype was assigned the serial number 53-4403, but the project was cancelled before construction could begin.[4]
See also
editAircraft of comparable role, configuration, and era
References
edit- Citations
- Bibliography
- Allen, Francis J. (Spring 1993). "The McDonnell XV-1". AAHS Journal. 38 (1). Huntington Beach, CA: American Aviation Historical Society.
- Boyne, Walter J. (1984). Vertical Flight: The Age of the Helicopter. Washington, DC: Smithsonian Institution Press. ISBN 978-0874742794.
- Pearcy, Arthur (1993). Flying the Frontiers: NASA and NACA Experimental Aircraft. Annapolis, MD: Naval Institute Press. ISBN 978-1557502582.
- Sikorsky, Sergei I. (2007). The Sikorsky Legacy. Images of Aviation. Charleston, SC: Arcadia Publishing. ISBN 978-0738549958.