Table-Top Shock Tunnel (TTST) for Studies of Shock Layer Chemistry and Rapid and Low-Cost Testing of Materials for Hypersonics

Brian E. Riggs, Eric C. Geistfeld, Chenbiao Xu, Irina Gouzman, Thomas E. Schwartzentruber, Timothy K. Minton

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-435

A new “table-top shock tunnel (TTST)” has been constructed and is intended to allow rapid and lowcost measurements of shock-layer chemistry and material response in well-characterized high-velocity
flows. The TTST is based on the production of pulsed hypersonic molecular beams by laser detonation
in a conical nozzle. In addition to providing fundamental data for the development of models, the
production of controlled shock layers above ablating and non-ablating surfaces and the measurement
of their phenomenology provide a means to validate new models. Furthermore, material response can
be tested in realistic environments and aid in the development of materials for hypersonics applications.
Initial characterization of the TTST has been carried out by studying the ablation phenomenology of a
Kapton H polyimide surface exposed to a hypersonic O/O2 beam at various distances from the nozzle
throat and comparing the experimental observations with the results of DSMC calculations.

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atomic oxygen, DSMC, Kapton ablation, Molecular beam, Shock tunnel

In Categories: HiSST 2022, Testing and Evaluation

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