Fluid Mechanics and Flight Mechanics

Inlet/engine matching of adaptive cycle engine for cruise mission

  • Yifan WANG ,
  • Haoying CHEN ,
  • Haibo ZHANG
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  • College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
E-mail: zh_zhhb@126.com

Received date: 2023-03-02

  Revised date: 2023-03-20

  Accepted date: 2023-06-07

  Online published: 2023-06-16

Supported by

National Science and Technology Major Project(J2019-III-0009-0053);Project of Advanced Jet Propulsion Creativity Center(HKCX2020020022);National Natural Science Foundation of China(52372389)

Abstract

Inlet and engine matching is the premise of stable, efficient and economic work of the whole propulsion system. In this paper, the matching problem between the inlet and the engine of the adaptive cycle engine is studied, and use of the special FLADE (Fan on Blade) components of the adaptive cycle engine to achieve the inlet and engine matching in the subsonic/supersonic cruise missions is proposed. Firstly, according to the matching principle of the inlet and engine, this paper analyzes the flow characteristics of the supersonic inlet and the role of FLADE components, and develops an integrated mathematical model of the supersonic inlet/adaptive cycle engine. Secondly, the altitude and speed characteristics of the engine with the open and closed FLADE guide vanes are studied. Combined with the subsonic/supersonic cruise mission requirements of the fighter, the capture area and throat area of the adaptive cycle engine inlet are designed, and the matching between the inlet and the engine is realized. Finally, simulation is carried out at the sub/supersonic cruise task points of the engine. The results show that opening the FLADE guide vane swallowing overflow at the subsonic cruise point can move the working point of the inlet from the subcritical to critical state, reducing the fuel consumption of the propulsion system by 10.5% and the installation loss by 1%. At the supersonic cruise point, to meet the matching characteristics of the inlet and the engine as well as the engine installation thrust requirements, it is necessary to close the FLADE guide vane to increase the unit thrust of the propulsion system.

Cite this article

Yifan WANG , Haoying CHEN , Haibo ZHANG . Inlet/engine matching of adaptive cycle engine for cruise mission[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(2) : 128637 -128637 . DOI: 10.7527/S1000-6893.2023.28637

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