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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (8): 227295-227295.doi: 10.7527/S1000-6893.2022.27295

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Thermal flutter ground simulation test

Haoyu CHEN, Binwen WANG(), Qiaozhi SONG, Xiaodong LI   

  1. Aviation Acoustics and Vibration Aviation Science and Technology Key Laboratory,Aircraft Strength Research Institute of China,Xi’an 710065,China
  • Received:2022-04-18 Revised:2022-05-08 Accepted:2022-06-02 Online:2023-04-25 Published:2022-06-08
  • Contact: Binwen WANG E-mail:asriwbw@vip.163.com
  • Supported by:
    National Level Project

Abstract:

Ground flutter simulation test is a flutter verification experiment technology for real aircraft structures, which uses exciters to simulate unsteady aerodynamic force. In this paper, the thermal environment simulation scheme is used in this technology to establish the thermal flutter ground simulation system. An aerodynamic interpolation point optimization algorithm is proposed based on the weighting of modal shapes. An unsteady aerodynamic reduced-order model for time-varying structure is constructed by using the Kriging surrogate model. After the simulation scheme of aerodynamic thermal environment and the measurement method of high-temperature structure’s response signal are designed, the experiment system based on the titanium alloy wing model is completed. Finally, time-varying thermal flutter boundary tracking and testing is carried out. The testing results show that the testing accuracy is acceptable when the controller is within the preset frequency range, but the narrow control bandwidth of robust controller limits the application of the thermal flutter ground simulation test.

Key words: hypersonic vehicle, aerodynamic heating effect, aerothermoelastic, time-varying flutter boundary, ground flutter test

CLC Number: