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The effect of aerodynamic heating is obvious for hypersonic aircrafts. Its temperature change of cabin electronic devices is obvious under this severe working condition. Therefore, for this type of aircraft, it is important to design the thermal protecting system and evaluate the impact on electrical devices. It is valuable for the designer to obtain the results of the dynamic prediction of thermal response accurately in advance. The aim of this paper is to establish a thermal network model based on Kirchhoff's circuit laws through an analogy of electrical and thermal systems. The simulation model is solved by using numeric simulation method. The presented thermal network model can realize the quick thermal response of the wall insulation and cabin devices due to aerodynamic heating, and then obtain the transient thermal simulation results of aircraft internal device. Comparisons with the reliable commercial Sinda/Fluent model show that the presented model has a good prediction accuracy. Therefore, the presented model can realize the accurate prediction of the transient heat transfer inside the cabin in a short time.

Study on Dynamic Prediction of Thermal Response for Aircraft Device Cabin