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On the linear superposition of aerodynamic forces on wings in periodic gusts

Published online by Cambridge University Press:  04 July 2016

M. H. Patel
M. H. Patel*
Affiliation:
Department of Mechanical Engineering, University College, London
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Extract

Calculations of the aerodynamic loads on wings in atmospheric gusts are an essential part of aircraft design for three main reasons. Firstly, an estimate of the gust loads which the aircraft must withstand is an important element of the structural design calculations in terms of ensuring both static load bearing capability and an adequate fatigue life. Secondly, the calculated gust loads provide the input to a suitable mathematical model of the aircraft structure in order to arrive at an assessment of aircraft accelerations and ride behaviour in expected levels of atmospheric turbulence. This is particularly significant for high speed military aircraft operating at low altitudes. Thirdly, aerodynamic loads due to gusts can be viewed as perturbing influences to aircraft stability so that the performance of an active control, gust alleviation or ride control system has to be considered with a detailed knowledge of the time variance of aerodynamic gust loads in mind.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 82 , Issue 810 , June 1978 , pp. 267 - 272
Copyright
Copyright © Royal Aeronautical Society 1978 

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Footnotes

†

This work was carried out in the Department of Aeronautical Engineering at Queen Mary College, London, with the support of Ministry of Defence, Procurement Executive. Paper No 547.

References

1. Patel, M. H. and Hancock, C. J. A gust tunnel facility, ARC R&M No 3802. 1977.Google Scholar
2. Patel, M. H. Lift and pitching moment measurements on finite wings in oscillatory vertical gusts. Queen Mary College, London EP–1022, September 1976.Google Scholar
3. Lambourne, N. C. and Welsh, B. L.—private communication.Google Scholar