CAJ | 학술논문

针对采用火药起动器起动的泵压开式循环液体火箭发动机，对其起动系统进行了分析和研究。建立了液体火箭发动机火药起动器计算模型和起动系统燃气管路流场计算模型。将所建立的起动系统模型应用于发动机系统仿真，对发动机火药起动过程进行仿真，分析了起动系统中火药起动器参数和燃气管路参数对发动机起动性能的影响，确定了主要影响参数和影响规律。火药起动器火药药柱内径、火药药柱长度以及燃气管路火药起动器喷管喉部直径为强影响因素；燃气管路涡轮喷嘴喉部直径和管路出口直径在确保发动机火药起动主要工况段燃气管路流场流态为额定工况流态的前提下，为弱影响因素。试验数据验证表明，发动机起动系统的仿真结果正确、可信。
침대채용화약기동기기동적빙압개식순배액체화전발동궤，대기기동계통진행료분석화연구。건립료액체화전발동궤화약기동기계산모형화기동계통연기관로류장계산모형。장소건립적기동계통모형응용우발동궤계통방진，대발동궤화약기동과정진행방진，분석료기동계통중화약기동기삼수화연기관로삼수대발동궤기동성능적영향，학정료주요영향삼수화영향규률。화약기동기화약약주내경、화약약주장도이급연기관로화약기동기분관후부직경위강영향인소；연기관로와륜분취후부직경화관로출구직경재학보발동궤화약기동주요공황단연기관로류장류태위액정공황류태적전제하，위약영향인소。시험수거험증표명，발동궤기동계통적방진결과정학、가신。
Aiming at the pumping pressure open cycle liquid rocket engine which is started by solid start cartridge (SSC), the performance of the start system is studied in this paper. The simulated model of SSC in the start system and the numerical model of the powder gas pipeline were established to simulate the process of gunpowder start. The influence of SSC and gas pipeline parameters on start performance of engine is analyzed to ensure the main influence parameters and regular patterns. It is found that the powder quantity of SSC and the diameter of the first throat in the powder gas pipeline are the most effective factors to the engine's start characteristic. The diameter of the powder gas pipeline's second throat and the diameter of the powder gas pipeline's outlet are the least ones in the case of that the powder gas pipeline's flow field keeps rated condition. The simulated result of the start system was proven in engine hot tests.