HAN基单组元发动机均匀分配喷注器设计及试验研究

doi:10.13675/j.cnki.tjjs.200658

推进技术 ›› 2021, Vol. 42 ›› Issue (7): 1606-1614.DOI: 10.13675/j.cnki.tjjs.200658

HAN基单组元发动机均匀分配喷注器设计及试验研究

刘川^1,2，刘俊^1,2，姚天亮^1,2，林庆国^1,2，孙德川³

1.上海空间推进研究所，上海 201112;2.上海空间发动机工程技术研究中心，上海 201112;3.大连理工大学航空航天学院，辽宁大连 116024

出版日期:2021-07-15 发布日期:2021-08-15
基金资助:
“十三五”民用航天项目（D010507）。

Design and Experimental Investigation on Uniform Distributed Injector in HAN-Based Monopropellant Thruster

1.Shanghai Institute of Space Propulsion，Shanghai 201112，China;2.Shanghai Engineering Research Center of Space Engine，Shanghai 201112，China;3.School of Aeronautics and Astronautics，Dalian University of Technology，Dalian 116024，China

Online:2021-07-15 Published:2021-08-15

摘要/Abstract

摘要： 硝酸羟胺基（简称HAN）推进剂要比肼类推进剂稳定，将相同质量的HAN基推进剂完全分解，HAN基推进剂所需的时间要比肼推进剂要长。为了增大推进剂与催化剂的初始接触面积，使推进剂在催化床内均匀分布，开展了发动机喷注器的均匀分配方式研究。通过采用VOF模型对新型喷注器结构的喷注过程和雾化效果进行数值仿真研究，为喷注器结构优化提供理论支持。同时通过三维PDA（Phase Doppler Anemometry）测量系统，获得了两种喷注器结构雾化液滴空间上的密度分布、直径大小以及轴向速度等对比情况。最后，通过地面热试车试验，对两种喷注器结构的发动机在脉冲温启动、稳态工作性能及燃烧反应特性等方面进行了对比，带喷注芯体的喷注器结构在开机响应特性和燃烧性能方面都更好。

关键词: HAN基发动机;均匀分配喷注器;数值仿真;雾化性能;热试车;燃烧性能

Abstract: Compared to hydrazine， Hydroxyl ammonium Nitrate （HAN） is more stable and takes longer to be completely decomposed. In order to improve the initial contact area between the propellant and the catalyst to make the propellant evenly distributed in the catalytic bed， the uniform distributed method of the injector is studied. The numerical simulation research on the injection process and atomization effect of the new injector structure has been carried out by using the Volume of Fluid （VOF） model， it provided theoretical support for the optimization of the injector structure. At the same time， the comparison of the density distribution， diameter and axial velocity of the atomized droplet in space of the two injector structures are detected by the three-dimensional phase Doppler Anemometry （PDA）. Finally， through the hot fire test on the ground， the performance of the thruster with two types of injector structure under warm start pulse test， steady-state test and combustion reactivities have been compared， and it has concluded that the structure with injection core is better under starting response characteristics and combustion performance.

Key words: HAN-based thruster;Uniform distributed injector;Numerical simulation;Atomization characteristics;Hot fire test;Combustion performance

刘川，刘俊，姚天亮，林庆国，孙德川. HAN基单组元发动机均匀分配喷注器设计及试验研究[J]. 推进技术, 2021, 42(7): 1606-1614.

LIU Chuan^1,2, LIU Jun^1,2, YAO Tian-liang^1,2, LIN Qing-guo^1,2, SUN De-chuan³. Design and Experimental Investigation on Uniform Distributed Injector in HAN-Based Monopropellant Thruster[J]. Journal of Propulsion Technology, 2021, 42(7): 1606-1614.

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HAN基单组元发动机均匀分配喷注器设计及试验研究

Design and Experimental Investigation on Uniform Distributed Injector in HAN-Based Monopropellant Thruster

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