Volume 31 Issue 03
Mar.  2005
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Wu Zhigang, Hui Junpeng, Yang Chaoet al. Hypersonic aerothermoelastic analysis of wings[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(03): 270-273. (in Chinese)
Citation: Wu Zhigang, Hui Junpeng, Yang Chaoet al. Hypersonic aerothermoelastic analysis of wings[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(03): 270-273. (in Chinese)

Hypersonic aerothermoelastic analysis of wings

  • Received Date: 08 Oct 2003
  • Publish Date: 31 Mar 2005
  • A hierarchical solution process for thermal flutter analysis is presented to dealing with the aero-thermo-elastic dynamic problems of hypersonic wings. Firstly, the natural dynamic characteristics of structures under thermal circumstances were analyzed. And then the hypersonic unsteady aerodynamics were calculated by using van Dyke piston theory. Finally the flutter equations were solved by p-k method. Numerical calculation and comparison are executed on two wings, one was an all-moved rudder, another was a low aspect-ratio wing with root fixed. The results illustrate that both the natural dynamics and the flutter characteristics of wings may vary duo to aerodynamic heating. Especially for the low aspect-ratio wing with root fixed, as the results of the thermal effect, its torsional stiffness decrease greatly, and so the bending-torsion flutter critical speed declines sharply.

     

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