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==Development== |
==Development== |
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===Early VTOL rotor aircraft=== |
===Early VTOL rotor aircraft=== |
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The idea of building [[VTOL]] aircraft using helicopter-like rotors at the wingtips originated in the 1930s. The first design resembling modern tiltrotors was patented by George Lehberger in May 1930, but he did not develop the concept further. In [[World War II]], a [[Germany|German]] [[prototype]] called the [[Focke-Achgelis Fa 269]] was developed starting in 1942, but it never flew. |
The idea of building [[VTOL|Vertical Take-Off and Landing]] aircraft using helicopter-like rotors at the wingtips originated in the 1930s. The first design resembling modern tiltrotors was patented by George Lehberger in May 1930, but he did not develop the concept further. In [[World War II]], a [[Germany|German]] [[prototype]] called the [[Focke-Achgelis Fa 269]] was developed starting in 1942, but it never flew. |
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Two prototypes that made it to flight were the one-seat [[Transcendental Model 1-G]] and two-seat Transcendental Model 2, both powered by single reciprocating engines. Development started on the Model 1-G in 1947, and it flew in 1954. The Model 1-G flew until a crash in [[Chesapeake Bay]] on 20 July 1955, destroying the prototype aircraft but not seriously injuring the pilot. The Transcendental 1-G was the first tiltrotor aircraft to have flown, and it accomplished most of a helicopter-to-aircraft transition in flight to within ten degrees of true horizontal aircraft flight. The Model 2 was developed and flew shortly afterward, but it did not fly much beyond hover tests. The [[United States Air Force]] withdrew funding in favor of the Bell XV-3. |
Two prototypes that made it to flight were the one-seat [[Transcendental Model 1-G]] and two-seat Transcendental Model 2, both powered by single reciprocating engines. Development started on the Model 1-G in 1947, and it flew in 1954. The Model 1-G flew until a crash in [[Chesapeake Bay]] on 20 July 1955, destroying the prototype aircraft but not seriously injuring the pilot. The Transcendental 1-G was the first tiltrotor aircraft to have flown, and it accomplished most of a helicopter-to-aircraft transition in flight to within ten degrees of true horizontal aircraft flight. The Model 2 was developed and flew shortly afterward, but it did not fly much beyond hover tests. The [[United States Air Force]] withdrew funding in favor of the Bell XV-3. |
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