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On the Energy Characteristics of the Aerodynamic Matrix and the Relationship to Possible Flutter

Published online by Cambridge University Press:  07 June 2016

J.G. Jones
J.G. Jones*
Affiliation:
Royal Aircraft Establishment, Farnborough, Hampshire
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Summary

The problem of energy transfer between an airstream and a wing in sinusoidal motion has been investigated by a series of authors beginning with Frazer who in 1939 considered the power input required to maintain forced oscillations of an aeroplane wing in flight. More recently Nissim introduced an ‘aerodynamic energy concept’ as the basis for the design of active control systems for flutter suppression. In this paper the author reconsiders the energy characteristics of the aerodynamic matrix in terms of the network concepts of resistive and reactive elements, corresponding to energy dissipation and energy storage respectively. A dual formulation of Nissim’s method is described and an extension proposed that takes account of aerodynamic energy storage in addition to aerodynamic energy dissipation.

Type
Research Article
Information
Aeronautical Quarterly , Volume 34 , Issue 3 , August 1983 , pp. 212 - 225
Copyright
Copyright © Royal Aeronautical Society. 1983

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References

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