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The first XB-70 carried out its maiden flight in September 1964 and many more test flights followed. [71] The data from the XB-70 test flights and aerospace materials development were used in the later B-1 bomber program, the American supersonic transport (SST) program, and via espionage, the Soviet Union's Tupolev Tu-144 SST program. [72]
In aerodynamics, compression lift refers to the increased pressure under an aircraft that uses shock waves generated by its own supersonic flight to generate lift. This can lead to dramatic improvements in lift for supersonic / hypersonic aircraft.
An elliptical planform is the most efficient aerodynamic shape for an untwisted wing, leading to the lowest amount of induced drag. The semi-elliptical planform was skewed so that the centre of pressure, which occurs near the quarter- chord position at all but the highest speeds, was close to the main spar, preventing the wings from twisting.
Although the modern theory of aerodynamic science did not emerge until the 18th century, its foundations began to emerge in ancient times. The fundamental aerodynamics continuity assumption has its origins in Aristotle's Treatise on the Heavens, although Archimedes, working in the 3rd century BC, was the first person to formally assert that a fluid could be treated as a continuum. [1]
[69] [70] [71] The body of the Gremlin was widely used by NASCAR paved and dirt modified stock car teams in the northeastern U.S. and elsewhere from the 1970s to the early 1990s. It was believed that Gremlin's long roof with its rear kick-up provided aerodynamic advantages over the more commonly used Pinto and Vega bodies.
Finally, aerodynamic problems may also be classified by the flow environment. External aerodynamics is the study of flow around solid objects of various shapes (e.g. around an airplane wing), while internal aerodynamics is the study of flow through passages inside solid objects (e.g. through a jet engine).
Scientific aerodynamic experiments were conducted to demonstrate drag and streamlining, movement of the center of pressure, and the increase in lift from curving the wing surface. Defining the modern aeroplane configuration comprising a fixed-wing, fuselage and tail assembly.
The Arsenal VG 70 was a single-seat monoplane research aircraft flown in France shortly after World War II to assist in the development of high-speed jet fighters. Lacking an indigenous turbojet engine , the aircraft was fitted with a German Junkers Jumo 004 .