CAJ | 학술논문

为了分析膏体冲压发动机的输送及调节特性,从发动机工作原理出发设计了推进剂输送及调节试验系统,针对所采用的膏体富燃料推进剂开展了试验研究.研究结果表明,在发动机工作条件下膏体富燃料推进剂的流动特性与幂率流体非常接近,可采用幂率流体层流流阻计算公式对试验管路内的流动损失进行估算,误差小于3%.通过增压压力较小的调节可获得较大的推进剂流量变化,具有调节系数大的特点,调节的响应时间随着推进剂粘性的增大而增大.
위료분석고체충압발동궤적수송급조절특성,종발동궤공작원리출발설계료추진제수송급조절시험계통,침대소채용적고체부연료추진제개전료시험연구.연구결과표명,재발동궤공작조건하고체부연료추진제적류동특성여멱솔류체비상접근,가채용멱솔류체층류류조계산공식대시험관로내적류동손실진행고산,오차소우3%.통과증압압력교소적조절가획득교대적추진제류량변화,구유조절계수대적특점,조절적향응시간수착추진제점성적증대이증대.
Based on working mechanism of pasty propellant ramjet, test system of propellant transfer and control was developed and experimental investigations were performed to study transfer and control performances of pasty fuel-rich propellant. The results show that rheological characteristics of pasty fuel-rich propellant can be described by power law. The pressure loss of pipe can be calculated by the loss equation deduced from power law model with error lower than 3%. The greater change of flow has been achieved by smaller change of boost pressure, and the response time increases with the increase of propellant viscosity.