NLR experience in the application of active flutter suppression and gust load alleviation, applied to a wind-tunnel model

Report (1985)

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Published Date

19-03-1985

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NLR MP 85027 U

Abstract

In 1981 NLR started a research programme to study the aeroelastic effects of active control systems. Control laws for flutter suppression and gust load alleviation systems were developed and tested using an aeroelastic wind-tunnel model in a subsonic wind tunnel with the capability to simulate discrete or random gusts. Flutter suppression up to the maximum wind-tunnel speed (1.4 V ) was achieved, while the gust load alleviation system reduced the wing root bending moment with 25 percent at 0.9 V for simulated gusts with a Dryden spectrum.

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