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Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing
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Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing
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Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing
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Journal Article
Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing
2018
Overview
Aerothermoelasticity plays a vital role in the design and optimisation of hypersonic aircraft. Furthermore, the transient and nonlinear effects of the harsh thermal and aerodynamic environment a lifting surface is in cannot be ignored. This article investigates the effects of transient temperatures on the flutter behavior of a three-dimensional wing with a control surface and compares results for transient and steady-state temperature distributions. The time-varying temperature distribution is applied through the unsteady heat conduction equation coupled to nonlinear aerodynamics calculated using 3rd order piston theory. The effect of a transient temperature distribution on the flutter velocity is investigated and the results are compared with a steady-state heat distribution. The steady-state condition proves to over-compensate the effects of heat on the flutter response, whereas the transient case displays the effects of a constantly changing heat load by varying the response as time progresses.
