航天推进技术研究院主办
[1]黄舰,林庆国.姿轨控发动机开机充填和关机传热特性[J].火箭推进,2022,48(04):43-50.
HUANG Jian,LIN Qingguo.Start-up filling process and heat transfer characteristics of shutdown in attitude and orbit control engine[J].Journal of Rocket Propulsion,2022,48(04):43-50.
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HUANG Jian,LIN Qingguo.Start-up filling process and heat transfer characteristics of shutdown in attitude and orbit control engine[J].Journal of Rocket Propulsion,2022,48(04):43-50.
姿轨控发动机开机充填和关机传热特性
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
48
期数:
2022年04期
页码:
43-50
栏目:
目次
出版日期:
2022-08-21
- Title:
- Start-up filling process and heat transfer characteristics of shutdown in attitude and orbit control engine
- 文章编号:
- 1672-9374(2022)04-0043-08
- 分类号:
- V434.3
- 文献标志码:
- A
- 摘要:
- 以双组元姿轨控液体火箭发动机为研究对象,为提高其响应速度和安全可靠性,通过实验和仿真对其开机充填和关机传热特性进行了研究。开展了透明喷注器试验件瞬态流动过程的实验研究,采用高速相机进行液流拍摄,对喷注器试验件瞬态流动过程进行仿真计算,并与实验结果进行对比,验证了流体体积模型计算的合理性。仿真结果表明地面状态各安装方向下发动机充填时间相差均不超过0.1 ms,安装方向对发动机开机充填过程影响较小。研究了真空状态下关机后推进剂的泄流过程,燃料比氧化剂更容易出现返腔现象,内圈位置比外圈更容易出现返腔现象 长时间蒸发后,氧化剂路和燃料路气态燃料含量较接近,部分返腔蒸气发生凝结,燃料蒸气主要凝结在氧化剂路中心区集液腔内。
- Abstract:
- In order to improve the response speed and safety reliability of the bipropellant attitude and orbit control liquid rocket engine, the filling process and heat transfer characteristics of the engine during its start-up and shutdown were studied by experiments and simulations.The experimental study on the transient flow process of the transparent injector test piece was carried out, and the liquid flow process was photographed with a high-speed camera.The transient flow process of the injector test piece was simulated and the results were compared with the experimental results to verify the rationality of the volume of fluid(VOF)model.The simulation results show that the filling time difference of the engine in each installation direction under the ground state is not more than 0.1 ms, and the installation direction has little effect on the start-up filling process.The discharge process of propellant after shutdown in vacuum state is studied.The fuel is easier to return to the cavity than the oxidant, and this phenomenon in the inner ring is more likely occur than that of the outer ring.After evaporating for a long time, the gaseous fuel content of fuel flow path is closer to oxidant flow path, and part of the vapor returning to the cavity condenses and it mainly occurs in the central area of the oxidant flow path.
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备注/Memo
收稿日期:2022-03-22 修回日期:2022-05-03
基金项目:国家自然科学基金企业创新发展联合基金(U21B2088)
作者简介:黄舰(1989—),男,硕士,工程师,研究领域为液体姿轨控动力系统设计。
更新日期/Last Update:
1900-01-01