气-气喷注器流量特性实验研究

Experimental investigation of flowrate characteristics of gas-gas injector

1.
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2.
The 11th Research Institute of CASC, Xi'an 710100, China

摘要: 对气-气喷注器的两种类型七种结构的喷嘴进行了带反压的流量特性试验, 选择其中一种结构的喷嘴展开在单路工作的流量特性试验, 重点考察进口压力和反压变化对喷嘴流量特性的影响和氧化剂喷嘴和燃料喷嘴的相互作用;通过试验测量和对实验数据的拟合, 得到喷嘴流量系数的经验公式.所得的结论对全流量补燃循环发动机气-气喷注器的优化设计有一定的指导意义.
- 航空、航天推进系统 /
- 气-气喷注器 /
- 流量特性 /
- 反压 /
- 全流量补燃循环
Abstract: Seven types of gas-gas injectors involving two patterns were employed to conduct the flowrate characteristics tests at different back pressure conditions.An investigation on flowrate characteristics of one type of injectors was made at single propellant injection.The effects of inlet pressure of injector and back pressure as well as interaction between oxidizer injector and fuel injector on flowrate characteristics were investigated.Through the experimental measurements and fitting a mathematical expression,the formula of discharge coefficient was given.The results presented in this paper may provide valuable reference for the optimization design of the gas-gas injector for full flow staged combustion cycle engine.
- aerospace propulsion system /
- gas-gas injector /
- flowrate characteristics /
- back pressure /
- full flow staged combustion cycle

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