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Computation of Unsteady Aerodynamic Forces in the Time Domain for GVT-based Ground Flutter Test
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 Title & Authors
Computation of Unsteady Aerodynamic Forces in the Time Domain for GVT-based Ground Flutter Test
Lee, Juyeon; Kim, Jonghwan; Bae, Jaesung;
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 Abstract
Flutter wind-tunnel test is an expensive and complicated process. Also, the test model may has discrepancy in the structural characteristics when compared to those of the real model. "Dry Wind-Tunnel" (DWT) is an innovative testing system which consists of the ground vibration test (GVT) hardware system and software which computationally can be operated and feedback in real-time to yield rapidly the unsteady aerodynamic forces. In this paper, we study on the aerodynamic forces of DWT system to feedback in time domain. The aerodynamic forces in the reduced-frequency domain are approximated by Minimum-state approximation. And we present a state-space equation of the aerodynamic forces. With the two simulation model, we compare the results of the flutter analysis.
 Keywords
Dry Wind Tunnel;Ground Vibration Test;Flutter Test;Unsteady Aerodynamic Force;Minimum-state Approximation;
 Language
Korean
 Cited by
 References
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