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A Matching Problem between the Front Fan and Aft Fan Stages in Adaptive Cycle Engines with Convertible Fan Systems

Author

Listed:
  • Xin Meng

    (School of Energy and Power Engineering, Beihang University, Beijing 100191, China)

  • Zhili Zhu

    (School of Energy and Power Engineering, Beihang University, Beijing 100191, China)

  • Min Chen

    (School of Energy and Power Engineering, Beihang University, Beijing 100191, China)

  • Yihao Xu

    (School of Energy and Power Engineering, Beihang University, Beijing 100191, China)

Abstract

In the process of studying the steady-state performance and component matching of adaptive cycle engines with convertible fan system, it was found that the front fan and aft fan stage have a unique matching problem when the mode select valve is closed and engine is operating at higher Mach number conditions. The cause of this matching problem was studied with numeric simulation in this paper. Based on the features of adaptive cycle engines with convertible fan system, the possible methods and their feasibilities of solving this matching problem were also discussed. According to the results, the flow rate adjustment capacity of the aft fan stage directly determines the occurrence and severity of this matching problem. The matching problem can be ameliorated in some extent by either reducing the design second bypass ratio or adjusting the variable geometry mechanisms, but it cannot be completely solved at the aspect of component matching mechanism.

Suggested Citation

  • Xin Meng & Zhili Zhu & Min Chen & Yihao Xu, 2021. "A Matching Problem between the Front Fan and Aft Fan Stages in Adaptive Cycle Engines with Convertible Fan Systems," Energies, MDPI, vol. 14(4), pages 1-33, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:840-:d:494137
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    References listed on IDEAS

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    1. Dong, Pengcheng & Tang, Hailong & Chen, Min & Zou, Zhengping, 2018. "Overall performance design of paralleled heat release and compression system for hypersonic aeroengine," Applied Energy, Elsevier, vol. 220(C), pages 36-46.
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    Cited by:

    1. Qiuxia Yu & Jun Hu & Weili Wang & Bin Gu, 2023. "Research on the Transient Characteristics of a Three-Stream Adaptive Cycle Engine," Energies, MDPI, vol. 16(24), pages 1-26, December.

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