小推力镁粉水冲压发动机地面直连试验研究

陈宏; 房小博; 刘丛林; 刘长猛; 李显辉; 单永志

doi:10.13224/j.cnki.jasp.20250004

小推力镁粉水冲压发动机地面直连试验研究

doi: 10.13224/j.cnki.jasp.20250004

陈宏^{1, 2,},
房小博¹,
刘丛林^{1, 2,*, ,},
刘长猛³,
李显辉¹,
单永志⁴

1.
哈尔滨工程大学航天与建筑工程学院，哈尔滨 150001
2.
哈尔滨工程大学航行器跨介质技术工业和信息化部重点实验室，哈尔滨 150001
3.
中国航天科技集团有限公司西安航天动力技术研究所，西安 710025
4.
中国兵器工业集团有限公司航空弹药研究院，哈尔滨 150001

详细信息

作者简介:
陈宏（1981-），男，副教授，博士，主要从事多相流数值模拟研究。E-mail：chenhong_jason@hrbeu.edu.cn

通讯作者:
刘丛林（1981-），女，助理研究员，博士，主要从事水下先进金属动力系统研究。E-mail：liuconglin2006@126.com

中图分类号: V435
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- 被引次数: 0
出版历程
- 收稿日期: 2025-01-03
- 网络出版日期: 2025-05-09

Ground direct-connection experiment of low-thrust magnesium powder water ramjet

CHEN Hong^{1, 2
,},
FANG Xiaobo¹,
LIU Conglin^{1, 2,*
, ,},
LIU Changmeng³,
LI Xianhui¹,
SHAN Yongzhi⁴

1.
College of Aerospace and Civil Engineering，Harbin Engineering University，Harbin 150001，China
2.
Key Laboratory of Ministry of Industry and Information Technology for Transmedia Technology of Aerospace Vehicles，Harbin Engineering University，Harbin 150001，China
3.
Xi’an Institute of Aerospace Solid Propulsion Technology，China Aerospace Science and Technology Corporation，Xi’an 710025，China
4.
Aviation Ammunition Institute，China North Industries Group Corporation，Limited，Harbin 150001，China

摘要

摘要:
以镁粉为燃料，开展水冲压发动机地面直连试验，采用变出口面积与变压力供给镁粉相结合的动态调节方法，成功解决了燃烧室压力与镁粉供给压力不平衡造成的火焰返流问题，实现了金属粉末式水冲压发动机稳定燃烧。采用两次供给，分三组布置的方式进行冲压供水，总水燃比为2.5，燃烧室平均压力为0.181 MPa，平均推力为41.46 N，金属燃料燃烧效率为76.98%。试验表明：合理的供粉压差是影响发动机稳定工作的一个重要因素，发动机工作时序对点火成功和稳定运行至关重要，建立合理的燃烧室热环境，是确保发动机持续稳定燃烧的关键。
- 镁粉 /
- 水冲压发动机 /
- 动态调节 /
- 地面直连试验 /
- 时序设计
Abstract:
A ground-connected experiment of a water ramjet engine using magnesium powder as fuel was successfully conducted. By using a continuous adjustment method integrating a variable exit area with a variable-pressure magnesium powder supply, the issue of flameback caused by pressure imbalances between the combustion chamber and the fuel supply system was effectively resolved. This method enabled stable combustion within the metal powder-based water ramjet engine. The engine utilized a dual-stage water injection system arranged in three groups, achieving a total water-to-fuel ratio of 2.5. The combustion chamber maintained an average pressure of 0.181 MPa, producing an average thrust of 41.46 N, with a metal fuel combustion efficiency of 76.98%. The experimental results indicated that an appropriate pressure differential for powder supply is a critical factor for ensuring stable engine operation. Furthermore, the engine’s operating sequence is essential to successful ignition and stable performance. Establishing a suitable thermal environment within the combustion chamber can be identified as the key to achieve continuous and stable combustion in the engine.
- magnesium powder /
- water ramjet engine /
- continuous adjustment /
- ground direct-connection experiment /
- sequential design

HTML

图 1 发动机样机

Figure 1. Prototype of the engine

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图 2 供粉装置

Figure 2. Powder supply device

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图 3 控制面板

Figure 3. Control panel

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图 4 供粉系统原理图

Figure 4. Schematic diagram of the powder supply system

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图 5 镁粉质量-时间曲线

Figure 5. Mass-time curve of magnesium powder

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图 6 供水系统原理图

Figure 6. Schematic diagram of the water supply system

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图 7 燃烧室反应原理图

Figure 7. Schematic diagram of the combustion chamber reaction

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图 8 控制系统原理图

Figure 8. Schematic diagram of the control system

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图 9 发动机喷管

Figure 9. Engine nozzle

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图 10 发动机点火瞬间喷管处燃烧状态（t=0 s）

Figure 10. Combustion state at the engine nozzle during ignition moment （t=0 s）

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图 11 二次水进入时喷管处燃烧状态（t=2 s）

Figure 11. Combustion state at the nozzle during secondary water injection （t=2 s）

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图 12 外圈喷口全闭时喷管处燃烧状态（t=4 s）

Figure 12. Combustion state at the nozzle when the outer ring port is fully closed （t=4 s）

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图 13 试验过程中喷管处燃烧状态变化

Figure 13. Variation of combustion state at the nozzle during the experiment

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图 14 停止供粉时喷管处状态（t=84 s）

Figure 14. Nozzle state during cessation of powder supply （t=84 s）

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图 15 试验后发动机内部图

Figure 15. Internal view of the engine after the experiment

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图 16 镁粉供给压力与燃烧室压强变化曲线

Figure 16. Variation curve of magnesium powder supply pressure and combustion chamber pressure

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图 17 燃烧室压强-时间曲线

Figure 17. Combustion chamber pressure-time curve

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图 18 发动机推力计算曲线

Figure 18. Engine thrust calculation curve

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