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Part 4 — Two dimensional dynamic stall

Published online by Cambridge University Press:  04 July 2016

G. J. Hancock  and
J. S. Y. Lam
G. J. Hancock
Affiliation:
Department of Aeronautical Engineering Queen Mary College, University of London
J. S. Y. Lam
Affiliation:
Department of Aeronautical Engineering Queen Mary College, University of London
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Summary

An axiomatic aerodynamic model has been developed for the general motion of a two dimensional aerofoil as it passes in and out of stall, which gives realistic unsteady loads as compared to experimental values. A non-linear set of aerodynamic derivatives with time delays have been derived from the axiomatic aerodynamics. ‘Actual’ and ‘predicted’ dynamic responses of an aerofoil, spring restrained in torsion, following an impulsive input show similar trends, including limit cycle oscillations, although there is a slight difference in frequency and a difference in the magnitude of the initial impulse required to trigger the limit cycle.

Type
On the application of axiomatic aerodynamic modelling to aircraft dynamics
Information
The Aeronautical Journal , Volume 91 , Issue 902 , February 1987 , pp. 72 - 88
Copyright
Copyright © Royal Aeronautical Society 1987 

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References

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