Study on Aerothermal Effects of Viscous Shock Interaction in Hypersonic Inlets

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Scientific paper

The objective of this study is to gain insight into the complex flow phenomena governing the aerodynamics of inlets for airbreathing space vehicles. A fully established flow field to simulate external and internal compression processes of different inlet models with three ramps is ensured by the hypersonic blow down tunnel H2K with its long test duration. Comprehensive information about thermal loads on the wall is gained by IR-thermography, i.e. thermal mapping of the PTFE model surfaces. Complementary information is obtained by flow visualizations and pressure measurements. The influence of model parts like side walls is demonstrated and separation regions are determined with respect to the boundary layer state. Altogether, the experimental results provide a substantial insight into the aerodynamics of hypersonic propulsion components.

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