Stability limit of supermulti-jets convergence engine operated from startup to extremely-hypersonic conditions: revealed by shock-tube experimens

摘要

Shock tube experiments reveal whether or not the single lightweight compression system of the supermulti-jets colliding with pulsation for aircars and aircraftsworks stably, which was proposed based on our previous three-dimensional unsteady computations. This compression system essentially differs from those in the traditional four types of engines with piston, turbofan, ran-seram, and pulse-detonation, because of the supermulti-jets colliding. The single compression system is capable of operating over a wide range of Mach numbers from startup to the hypersonic regime. Shocktube experiments clarify the stability range of this system in detail. Influence of the number of supermulti-jets on the stability will also be examined. This system can also be extended with a special piston and scram jet systems to achieve an improved fuel consumption rate at various situations between the ground and the space, while maintaining a low noise level and also solving the problem of the buzz at highersonic conditions.