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Study on Torch Ignition Scheme for Expander Cycle LOX/LH2 Engine
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Jinjiang LI1, 2, Heng LIU1, Dengfeng LIU1, Baoxin CHU1, Nan ZHANG1
Missiles and Space Vehicles | 2024, 47(3) : 38 - 44
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Missiles and Space Vehicles | 2024, 47(3): 38-44
• Propulsion •
Study on Torch Ignition Scheme for Expander Cycle LOX/LH2 Engine
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Jinjiang LI1, 2, Heng LIU1, Dengfeng LIU1, Baoxin CHU1, Nan ZHANG1
Affiliations
  • 1Beijing Aerospace Propulsion Institute,Beijing,100076
  • 2Cryogenic Liquid Propulsion Technology Laboratory,China Aerospace Science and Technology Corporation,Beijing,100076
Published: 2024-06-25 doi: 10.7654/j.issn.2097-1974.20240306
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In response to the multiple ignition requirement of the expander cycle hydrogen-oxygen engine, research on the torch ignition system scheme is conducted, and a relatively reasonable low-pressure torch ignition system scheme is identified. The results show that the mixing ratio of the torch igniter fluctuated greatly when opening the hydrogen main valve, which may cause structural ablation. The scheme of introducing hydrogen from the inlet of the hydrogen turbine and liquid oxygen from the outlet of the liquid oxygen pump has a lower ablation risk, but it has a certain impact on the engine's start-up and steady-state characteristics. The low-pressure torch ignition start-up tests of liquid rocket engine are carried out for the first time in China. The experimental results verify the simulation results, and indicating the feasibility of the scheme.

expander cycle  /  LOX/LH2 engine  /  torch igniter  /  system scheme  /  simulation
Jinjiang LI, Heng LIU, Dengfeng LIU, Baoxin CHU, Nan ZHANG. Study on Torch Ignition Scheme for Expander Cycle LOX/LH2 Engine[J]. Missiles and Space Vehicles, 2024 , 47 (3) : 38 -44 . DOI: 10.7654/j.issn.2097-1974.20240306
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Year 2024 volume 47 Issue 3
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Article Info
doi: 10.7654/j.issn.2097-1974.20240306
  • Receive Date：2024-04-02
  • Online Date：2025-07-04
  • Published：2024-06-25
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  • Received：2024-04-02
  • Revised：2024-05-11
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    1Beijing Aerospace Propulsion Institute,Beijing,100076
    2Cryogenic Liquid Propulsion Technology Laboratory,China Aerospace Science and Technology Corporation,Beijing,100076
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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