Research paper published in the Journal of Aeronautical History by John Ackroyd FRAeS on Aerodynamics as the Basis of Aviation: How Well Did It Do?
The paper describes the role of
aerodynamics in the enhancement of aeroplane performance. To illustrate this,
drag and lift-to-drag data are reviewed, covering the first half-century of
powered, controllable flight. The survey begins with the Wright Flyer and the
biplanes subsequently developed. This is followed by the monoplane’s
ascendancy, the new ideas in aerodynamics here leading to significant drag
reduction and increased speed. For this phase, data provided by the Royal
Aircraft Establishment, which appear to be not widely known, are discussed in
some detail, together with the Establishment’s development of drag assessment
methods. The survey then turns to the emerging jet age, ending with the early
British swept-wing aircraft, forerunners of the Swift and Hunter. The influence
of Reynolds number emerges in the survey but the transonic drag rise due to
compressibility is not covered. It is hoped that this survey of aerodynamic
drag reduction will be of interest to students new to the subject and also to
those wishing to learn more of the development of aeronautical science.
John Ackroyd
FRAeS
·
Papers
Aerodynamics as the Basis of Aviation
- How Well Did It Do.pdf
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