航天推进技术研究院主办
[1]白梅杉,於希乔,陆文杰,等.硝酸羟胺发动机喷注器特种流量分配方法[J].火箭推进,2023,49(05):99-106.
BAI Meishan,YU Xiqiao,LU Wenjie,et al.Injector flow distribution method of a hydroxylamine nitrate thruster[J].Journal of Rocket Propulsion,2023,49(05):99-106.
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BAI Meishan,YU Xiqiao,LU Wenjie,et al.Injector flow distribution method of a hydroxylamine nitrate thruster[J].Journal of Rocket Propulsion,2023,49(05):99-106.
硝酸羟胺发动机喷注器特种流量分配方法
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
49
期数:
2023年05期
页码:
99-106
栏目:
目次
出版日期:
2023-10-25
- Title:
- Injector flow distribution method of a hydroxylamine nitrate thruster
- 文章编号:
- 1672-9374(2023)05-0099-08
- 分类号:
- V434.24
- 文献标志码:
- A
- 摘要:
- 硝酸羟胺(HAN)发动机如果采用传统肼类均匀分配喷注器,那么在靠近喷注器一段距离的催化床内,中心温度低于边缘温度,中心位置反应物转化率低于边缘位置,并且中心位置反应物质量分数高于边缘位置,该不均匀性将影响发动机工作寿命。针对HAN发动机喷注器采用传统设计方案容易使得催化床中心过载的问题,提出了一种“外密内疏”流量分配喷注器设计方法,并给出了该方法的设计理论。开展了基于传统喷注器结构和新型“外密内疏”喷注器结构的60 N HAN发动机热试车试验,对比结果表明,传统均匀分配喷注器的60 N HAN发动机工作680 s后发动机失效,而采用新型特种流量分配方案喷注器的发动机可较稳定地完成1 200 s长稳态工作。提出的新型喷注器设计方法为长寿命HAN发动机工程应用提供了参考。
- Abstract:
- If the traditional hydrazine-type uniformly distributed injector was used in a hydroxylammonium nitrate(HAN)thruster, the temperature in the center of the catalyst bed near the injector is lower than the temperature on the edge, and the conversion rate of the reactants in the center is lower than that on the edge, and the reactant mass fraction in the center is higher than that on the edge, which will affect the operating life of the thruster. Aiming at the problem that the center of the catalyst bed is easy to overload by using the traditional scheme of the injector in the HAN thruster, a design method of the injector's flow distribution named “dense outside and sparse inside” was proposed, and the design theory of this method was given. Firing tests of a 60 N HAN thruster with a traditional injector and a new-type of injector were carried out. The results show that the 60 N HAN thruster with the traditional uniformly distributed injector fails after working for 680 s, while the thruster with the new special flow distribution injector can work steadily for 1 200 s. The new injector design method provided a reference for the engineering applications of the long-life HAN thruster.
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备注/Memo
收稿日期:2022-08-23; 修回日期:2022-09-07
基金项目:国家自然科学基金(U21B2088); 上海市优秀学术/技术带头人计划(22XD1422000)
作者简介:白梅杉(1986—),男,硕士,高级工程师,研究领域为液体火箭发动机设计。
通信作者:姚天亮(1985—),男,博士,研究员,研究领域为液体火箭发动机设计。
更新日期/Last Update:
1900-01-01