Science China Physics, Mechanics & Astronomy

, Volume 57, Issue 6, pp 1111–1118

A high-efficiency aerothermoelastic analysis method

Authors

  • ZhiQiang Wan
    • School of Aeronautic Science and EngineeringBeihang University
  • YaoKun Wang
    • School of Aeronautic Science and EngineeringBeihang University
  • YunZhen Liu
    • School of Aeronautic Science and EngineeringBeihang University
    • School of Aeronautic Science and EngineeringBeihang University
Article

DOI: 10.1007/s11433-014-5410-8

Cite this article as:
Wan, Z., Wang, Y., Liu, Y. et al. Sci. China Phys. Mech. Astron. (2014) 57: 1111. doi:10.1007/s11433-014-5410-8

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

aerothermoelastictwo-way couplingunified hypersonic lifting surface theorypiston theoryflutter

Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2014