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Note on the dependence of flap hinge moment derivatives on hinge position

Published online by Cambridge University Press:  07 June 2016

W.J. Duncan
W.J. Duncan*
Affiliation:
Professor of Aerodynamics, College of Aeronautics, Cranfield
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Summary

It is shown to be a consequence of kinematics and statics that the aerodynamic derivative expressing the rate of change of hinge moment of a plain flap with the angular setting of the flap varies parabolically with the chordwise position of the hinge. The derivative expressing the rate of change of hinge moment with incidence of the main surface varies linearly with the hinge position. Similar conclusions hold for the derivatives of the hinge moment with respect to the corresponding angular velocities.

Type
Research Article
Information
Aeronautical Quarterly , Volume 2 , Issue 2 , August 1950 , pp. 143 - 145
Copyright
Copyright © Royal Aeronautical Society. 1950

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References

1. Küssner, H.G. and Schwarz, L. (1940). The Oscillating Wing with Aerodynamically Balanced Aileron. Luftfahrtforschung, Vol. 17, 1940.Google Scholar
2. Jones, W.P. (1941). Aerodynamic Forces on an Oscillating Aerofoil-Aileron-Tab Combina tion. R. & M. 1948, 1941.Google Scholar