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Performance analysis of precooled turbojet engine with a low-temperature endothermic fuel

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  • Pan, Xin
  • Xiong, Yuefei
  • Wang, Cong
  • Qin, Jiang
  • Zhang, Silong
  • Bao, Wen

Abstract

For hydrocarbon-fueled TBCC engines, precooling is a crucial technology to solve “thrust gap” by expanding the flight Mach number of the turbojet engine, which can bring a sharp reduction of the specific impulse due to insufficient heat sink of hydrocarbon fuel. A low-temperature endothermic fuel precooling scheme is a great potential way to solve this problem. Heat sink experiments and thermodynamic cycle analysis are used to verify the effectiveness of the low-temperature endothermic fuel precooling scheme in improving specific impulse performance. The experiment results indicated that low-temperature endothermic fuel has a more considerable heat sink at lower temperatures than traditional endothermic hydrocarbon fuel. The results of thermodynamic cycle analysis show that the low-temperature endothermic fuel precooling scheme can effectively improve the specific impulse. Maximum specific impulse can reach above 800s with the low-temperature endothermic fuel precooling scheme, which is below 400s with hydrocarbon fuel precooling at Ma0 = 3.0. When cracking rate equals 1.0, and precooling efficiency equals 0.85, maximum specific impulse can reach 600s, increased by approximately 1.4 times at Ma0 = 4.0. The feasibility of precooled turbojet with the low-temperature endothermic fuel precooling scheme was preliminarily verified through this work.

Suggested Citation

  • Pan, Xin & Xiong, Yuefei & Wang, Cong & Qin, Jiang & Zhang, Silong & Bao, Wen, 2022. "Performance analysis of precooled turbojet engine with a low-temperature endothermic fuel," Energy, Elsevier, vol. 248(C).
  • Handle: RePEc:eee:energy:v:248:y:2022:i:c:s0360544222004856
    DOI: 10.1016/j.energy.2022.123582
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    References listed on IDEAS

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    1. Yu, Xuanfei & Wang, Cong & Yu, Daren, 2019. "Precooler-design & engine-performance conjugated optimization for fuel direct precooled airbreathing propulsion," Energy, Elsevier, vol. 170(C), pages 546-556.
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    1. Ma, Xiaofeng & Jiang, Peixue & Zhu, Yinhai, 2023. "Modeling and performance analysis of a pre-cooling and power generation system based on the supercritical CO2 Brayton cycle on turbine-based combined cycle engines," Energy, Elsevier, vol. 284(C).
    2. Lv, Chengkun & Lan, Zhu & Wang, Ziao & Chang, Juntao & Yu, Daren, 2024. "Intelligent ammonia precooling control for TBCC mode transition based on neural network improved equilibrium manifold expansion model," Energy, Elsevier, vol. 288(C).
    3. Lv, Chengkun & Huang, Qian & Wang, Ziao & Chang, Juntao & Yu, Daren, 2024. "Mode transition control law analysis of ammonia MIPCC aeroengine considering inlet–compressor safety matching," Energy, Elsevier, vol. 288(C).
    4. Wang, Wei & He, Miaosheng & Yu, Bin & Chen, Xinwei & Xie, Mingyun & Huang, Xiaobin & Liu, Hong, 2024. "Energy and exergy analyses on the high-pressure bleeding-air variable cycle designed for a wide-speed-range airbreathing propulsion system," Energy, Elsevier, vol. 312(C).
    5. Wang, Cong & Yu, Xuanfei & Ha, Chan & Liu, Zekuan & Fang, Jiwei & Qin, Jiang & Shao, Jiahui & Huang, Hongyan, 2023. "Thermodynamic analysis for a novel chemical precooling turbojet engine based on a multi-stage precooling-compression cycle," Energy, Elsevier, vol. 262(PA).
    6. Zhao, Xiaotian & Ouyang, Tingyi & Zhao, Zeyang & Xu, Maojun & Liu, Jinxin & Song, Zhiping, 2025. "Energy conservation optimization based on RSM-NPSO and safety boundary research of hydrogen engine thermal management system," Energy, Elsevier, vol. 333(C).

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