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Acta Aeronautica et Astronautica Sinica

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Research Progress of Ground Flutter Simulation Test Technology

  

  • Received:2023-06-27 Revised:2023-10-17 Online:2023-10-24 Published:2023-10-24

Abstract: Flutter is a kind of aeroelastic dynamic stability problem that should be avoided during flight and may lead to disastrous consequences. Ground flutter simulation test (GFST) is an emerging method flutter testing method, which directly uses the prototype structure or model structure of the aircraft as the test object and is a semi-physical simulation test technique. Aerodynamic simulation loading devices, such as shakers, are used to simulate the distributed aerodynamic loads on the structure, so that the aeroelastic stability characteristics of the real structure can be obtained on the ground (outside the wind tunnel). In this paper, the research status of GFST technology is analyzed from three aspects: reduced-order real-time reconstruction of the unsteady aerodynamic, the unsteady aerodynamic simulation loading and the implementation of GFST. Finally, the future development direction of GFST technology is prospected.

Key words: Ground flutter simulation test, reduced-order real-time reconstruction of unsteady aerodynamic force, aerodynamic equivalence theory, loading system modeling, excitation force control

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