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Aerospace 2018, 5(3), 71; https://doi.org/10.3390/aerospace5030071

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.
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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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Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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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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