Numerical Investigation of the Oblique Detonation Waves and Stability in a Super-Detonative Ram Accelerator

This study numerically investigates the effects of diluent gas proportion, overdrive factor, and throat width on wave structure thrust performance a ram accelerator operating in super-detonative mode. For premixed high energy density, typical unstart oblique detonation system is observed due to ignition front wedge projectile, waves move downstream shoulder as density decreases. In start range position also shows tendency projectile velocity increases, accompanied by oscillations surface thrust. As standing changes non-monotonously, with an interval upstream movement Mach reflection. The mode identified, well stable features unstable process for choking, which can provide theoretical guidance avoiding issues accelerators optimizing their performance.