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The NASA Oblique Wing Research Aircraft, the predecessor to the AD-1. The first known oblique wing design was the Blohm & Voss P.202, proposed by Richard Vogt in 1942. [1] The oblique wing concept was later promoted by Robert T. Jones, an aeronautical engineer at NASA's Ames Research Center, Moffett Field, California.
Oblique wing on a NASA AD-1. An oblique wing (also called a slewed wing) is a variable geometry wing concept. On an aircraft so equipped, the wing is designed to rotate on center pivot, so that one tip is swept forward while the opposite tip is swept aft.
This initial oblique-wing program, which ran from 1976 through 1982, was a joint effort between NASA’s Ames Research Center and Dryden Flight Research Center, CA, thus giving rise to the aircraft’s name: Ames-Dryden AD-1 Oblique Wing Research Aircraft.
Oblique wing: a single full-span wing pivots about its midpoint, as used on the NASA AD-1, so that one side sweeps back and the other side sweeps forward. Telescoping wing: the outer section of wing telescopes over or within the inner section of wing, varying span, aspect ratio and wing area, as used on the FS-29 TF glider. [28] Detachable wing.
The mechanism for varying the angle of a swept wing is complicated, heavy and expensive. The two halves must be aligned with each other and each supported at one end. A single oblique wing may be supported in the middle and without needing a linking gear. The idea has been tried successfully on the NASA AD-1.
An ASH 31 glider with very high aspect ratio (AR=33.5) and lift-to-drag ratio (L/D=56). In aeronautics, the aspect ratio of a wing is the ratio of its span to its mean chord.It is equal to the square of the wingspan divided by the wing area.
An Experimental Investigation of Three Oblique Wing and Body Combinations at Mach Numbers Between .6 and 1.4, NASA TM X-62256, April 1973 With Graham, A., and Summers, J., Wind Tunnel Test of an F-8 Airplane Model Equipped with an Oblique Wing, NASA TM X-62273, June 1973
AD 1 or AD-1 may also refer to: AD.1 or AD Seaplane Type 1000, a British seaplane of the First World War; Airship Development AD1, a British non-rigid gas-filled advertising airship, 1929–1931; Douglas AD-1 Skyraider, an attack aircraft developed in the 1940s; NASA AD-1, an oblique-wing research aircraft developed in the 1970s