卫星并联贮箱均衡排放的研究

Research on Equalizing Expulsion Performance of Parallel Tanks in Satellite

在双组元卫星推进系统设计过程中,为保证发动机入口混合比满足设计状态,需要通过调节燃料和氧化剂支路的管路流阻来实现,常规方法为通过多次地面水试试验,对各支路安装的节流孔板进行修正。根据某型号卫星的管路布局,基于AMESim建立并联贮箱均衡排放的预测模型并在后续的地面水试试验中进行验证。试验验证了仿真模型的可行性,提出了仿真模型的修正参数,修正后的仿真模型可以较为准确地预测该型号后续卫星的孔板尺寸,节约了地面水试试验的时间,可为缩短卫星型号研制周期提供帮助。

In the design process of bipropellant satellite propulsion system,it is necessary to adjust the pipeline flow resistance of the fuel and oxidant branch to ensure that the mixing ratio at the inlet of the engine meets the design state.The conventional method is to correct the throttle orifice installed in each branch through multiple surface water tests.According to the pipeline layout of a certain model satellites,a prediction model of the equalizing expulsion performance of parallel tanks is established based on AMESim,which is verified in the subsequent water test.The test verifies the feasibility of the simulation model,and puts forwards the modified parameters of the model.The modified simulation model can accurately predict the orifice size of the subsequent satellite of themodel,save the surface water test time and help to shorten the development cycle of the satellite model.