Science China Physics, Mechanics & Astronomy

, Volume 57, Issue 6, pp 1111–1118 | Cite as

A high-efficiency aerothermoelastic analysis method

Article

Abstract

In this paper, a high-efficiency aerothermoelastic analysis method based on unified hypersonic lifting surface theory is established. The method adopts a two-way coupling form that couples the structure, aerodynamic force, and aerodynamic thermo and heat conduction. The aerodynamic force is first calculated based on unified hypersonic lifting surface theory, and then the Eckert reference temperature method is used to solve the temperature field, where the transient heat conduction is solved using Fourier’s law, and the modal method is used for the aeroelastic correction. Finally, flutter is analyzed based on the p-k method. The aerothermoelastic behavior of a typical hypersonic low-aspect ratio wing is then analyzed, and the results indicate the following: (1) the combined effects of the aerodynamic load and thermal load both deform the wing, which would increase if the flexibility, size, and flight time of the hypersonic aircraft increase; (2) the effect of heat accumulation should be noted, and therefore, the trajectory parameters should be considered in the design of hypersonic flight vehicles to avoid hazardous conditions, such as flutter.

Keywords

aerothermoelastic two-way coupling unified hypersonic lifting surface theory piston theory flutter 

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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • ZhiQiang Wan
    • 1
  • YaoKun Wang
    • 1
  • YunZhen Liu
    • 1
  • Chao Yang
    • 1
  1. 1.School of Aeronautic Science and EngineeringBeihang UniversityBeijingChina

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