An Aerothermal Flexible Mode Analysis of a Hypersonic Vehicle

  • Williams T
  • Bolender M
  • Doman D
 et al. 
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This paper describes a method for the determination of the flexible modes of an air-breathing hypersonic vehicle. The method outlined here takes into account changes in vehicle mass and structural temperature over the duration of the vehicle’s trajectory. A simple sizing program is outlined to estimate the vehicle volume, mass, and planform requirements for a dual- cycle (rocket and scramjet) powered vehicle. It is shown that the varying mass effects dominate the frequencies and mode-shapes over the structural heating effects. We then discuss the effects of the structural modes on the transmission zeros.

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  • Trevor Williams

  • Michael Bolender

  • David Doman

  • Oscar Morataya

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