Marco A. S. MINUCCI, Israel S. RÊGO, Marcos M. BORGES, Giannino P. CAMILLO, Lucas A. G. RIBEIRO, Rafael O. SANTOS, Thiago L. DE ASSUNÇÃO, Ivo de P. M. ALVES, Thiago V. C. MARCOS, Bruno B. NASCIMENTO, Pedro S. MATOS, Lucas GALEMBECK, Dermeval CARINHANA JR

DOI Number: XXX-YYY-ZZZ

Conference number: HiSST 2024-00123

A new high-enthalpy hypersonic pulsed facility is being commissioned at the Aerothermodynamics and
Hypersonic Division – EAH of the Institute for Advanced Studies – IEAv, in Brazil. The single-diaphragm
combustion-driven shock tube operating mode was initially investigated. Both driver and driven sections
were instrumented with pressure transducers. The combustion driver was filled with a pressurized
stoichiometric mixture of Hydrogen and Oxygen diluted in Helium, which was ignited through specially
built spark plugs evenly distributed along the driver tube wall. Mixture dilutions of 65% and 75% were
investigated with filling pressure up to 3.0 MPa. The shock tube performance was also evaluated in
terms of incident shock wave velocity. Diaphragm rupture behaviour was assessed for several
operational conditions, in order to minimize diaphragm debris formation and to guarantee repeatable
flow conditions. In addition, the combustion-driven shock tunnel safety procedures were practiced
starting from milder configurations before ramping up the operating conditions.

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