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Static and dynamic stability

Published online by Cambridge University Press:  04 July 2016

A. W. Babister
A. W. Babister*
Affiliation:
University of Glasgow
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Extract

For most aircraft, longitudinal dynamic stability is assured if the static margin is positive. However, a statically stable aircraft is not necessarily dynamically stable. The problem of establishing under what conditions static stability is sufficient has recently been considered in Ref. I, by means of two-parameter stability diagrams. It seems to the present writer that a simpler approximate solution can be found by considering the factors of the characteristic equation.

Type
Research Article
Information
The Aeronautical Journal , Volume 82 , Issue 806 , February 1978 , pp. 85 - 87
Copyright
Copyright © Royal Aeronautical Society 1978 

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References

1. Sachs, G. Static stability and aperiodic divergence. Journal of Aircraft, Vol 12, p 497. 1975.Google Scholar
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3. Babister, A. W. Aircraft stability and control. Pergamon Oxford, 1961.Google Scholar
4. Neumark, S. Problems of longitudinal stability below minimum drag speed, and theory of stability under constraint. R & M 2983, 1957.Google Scholar
5. Gates, S. B. and Lyon, H. M. A continuation of longitudinal stability and control analysis. Part 1. General theory. R & M 2027, 1944.Google Scholar