多推力室的气动谐振点火器研究

Research on gas dynamic resonance igniters of multithruster

为了满足多推力室多次同步点火的需要,通过大量的空气气动谐振加热实验和理论分析,研制了两种利用气动谐振点火技术的多推力室点火器,即多管点火器和小点火器,给出了这两种点火器的系统结构、试验参数以及部分试验结果。这两种点火器都能在1秒内提供不同流量的火焰燃气,分别适用于较小推力室和较大推力室的点火。在实验室中进行的多次点火试验结果表明,这两种点火器都可以可靠地进行海平面上多推力室的多次同步点火。

To realize the multi-thruster ignition, two methods based on the gas dynamic resonance heating technology were presented. Based on numerous air resonance heating experiments and analytical work, two kinds of igniters (multi-tube igniter and small igniter) were developed and tested successfully. The system structure, experimental parameters and results were presented. The former can be fixed to smaller thrusters easily, and the latter can provide larger flame gas flux and ignite normal thrusters. Both were able to perform repetitious multi-thruster ignition simultaneously and reliably in one second at sea level.