The response of aircraft to two-dimensional vertical turbulence

Report (1991)

Authors

R. Noback

Cross-correlation Gust loads Mathematical models Power spectra Transport aircraft Atmospheric turbulence Dynamic loads Two-dimensional flow Vertical distribution Degrees of freedom

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Published Date

16-09-1991

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NLR Technical Publication TP 91357 U

Abstract

Equations for the response of an aircraft to two-dimensional vertical atmospheric turbulence have been derived, both for an aircraft regarded as a continuous system and for an aircraft split up into a number of panels. These equations have been applied to an aircraft model with two degrees of freedom of the size of the Fokker 100, respectively. Two-dimensional turbulence gives a reduction of the loads with respect to one-dimensional turbulence. The reduction of the acceleration in the centre of gravity and the reduction of the wing root bending moment, for the second aircraft model, is 3 percent and 6-8 percent, respectively.

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