Startability and Mach reflection hysteresis of shortened Busemann intakes for axisymmetric scramjet engines

Hypersonic airbreathing propulsion offers great potential for economical access to space as well as intercontinental atmospheric flight. In particular, scramjet engines are a promising technology to enable flexible systems for transport to the low-earth orbit. The air intake plays a crucial role in the engine flow process, being responsible for the compression of inflow to high pressure and temperature required for ignition and combustion, while maintaining high total pressure.