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Aerospace 2018, 5(3), 71;

Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing

School of AMME, The University of Sydney, Sydney, NSW 2006, Australia
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 23 May 2018 / Revised: 27 June 2018 / Accepted: 29 June 2018 / Published: 2 July 2018
(This article belongs to the Special Issue Aeroelasticity)
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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. View Full-Text
Keywords: aerothermoelasticity; transient response; hypersonics aerothermoelasticity; transient response; hypersonics

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Vio, G.A.; Munk, D.J.; Verstraete, D. Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing. Aerospace 2018, 5, 71.

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