Two X-5s were built (serial numbers 50-1838 and 50-1839). The first was completed 15 February 1951, and the two aircraft made their first flights on 20 June and 10 December 1951. Almost 200 flights were made at speeds up to Mach 0.9 and altitudes of 40,000 ft (12,000 m).

2019年3月12日 · The X-5 was an experimental single-seat, single-engine, jet-powered fighter design prototype produced by the Bell Aircraft company and became the first aircraft to make use of in-flight variable geometry wings. Its roots originated in the German Messerschmitt Me P.1101 of which the X-5 borrowed heavily from in terms of overall design.

DAYTON, Ohio -- Bell X-5 at the National Museum of the United States Air Force. (U.S. Air Force photo) The X-5 was the world's first high-performance airplane to vary the sweepback of its wings in flight. It investigated the characteristics of variable sweep aircraft in flight and the feasibility of producing aircraft with this feature.

2014年2月28日 · Although the NACA conducted independent wind tunnel research on variable sweep wings in 1945, the X-5 originated with the Messerschmitt P.1101 experimental aircraft. This was a small jet with wings that could be adjusted on the ground to three fixed angles between 35 and 45 degrees.

The X-5 was powered by an Allison J-45-A jet engine with a static thrust of 4,900 lb. The maximum speed was 716 mph and the maximum altitude reached was 49,919 ft.

2013年8月26日 · This NACA High-Speed Flight Research Station photograph of the X-5 was taken at Edwards Air Force Base in the mid 1950s. The photograph shows the aircraft in flight with the wings swept back.

2021年8月14日 · When completely “unfurled” at a sixty-degree sweep, the X-5 was intended to handle better and produce more lift at lower airspeeds, like during landing or take off. When at altitude and higher...

The X-5 was an experimental single-seat, single-engine, jet fighter design prototype built by Bell Aircraft and was the first aircraft to use variable-geometry wings in flight. Its roots can be traced back to the German Messerschmitt Me P. 1101, from which the …

2022年8月18日 · With only two units produced, Bell X-5 remains one of the most important aircraft in post-WWII history. This plane played a critical role in testing the sweep angle changes of a plane’s wings while flying.

X-5 was a single-seat plane, powered by an Allison J-35-A-17A jet engine, which was the first aircraft capable of sweeping its wings in flight. The Bell X-5 helped provide data about wing-sweep at angles of up to 60° at subsonic and transonic speeds. There were two X-5 vehicles.