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A Family of Aerofoils With Rounded Trailing Edge

Published online by Cambridge University Press:  28 July 2016

Extract

1. Piercy, Piper and Preston (1) and Piercy, Preston and Whitehead (2) have developed a family of aerofoils which are the inverses of hyperbolas. These calculations give a family with a finite tail angle, equal to the angle between the asymptotes. It may sometimes be preferable to have a rounded trailing edge. It is the purpose of this note to describe a family whose members are inverses of ellipses.

2. It will be seen that, if the centre of inversion is on the major axis produced, symmetrical sections will result; whilst, if the centre is just off the major axis, a cambered section will be produced; and the inverse of the major axis (which is a circle) can be taken as the camber line.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1940

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References

(1) Piper, Piercy and Preston, .Phil. Mag., Vol. XXIV (1937), pp.425444.Google Scholar
(2) Preston, Piercy and Whitehead, . Aircraft Engineering, Vol. X (1938), pp. 339343.Google Scholar