Fluid Mechanics and Flight Mechanics

Multistage optimization design method of hypersonic inward turning inlet

  • WANG Jifei ,
  • CAI Jinsheng ,
  • DUAN Yanhui
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  • 1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
    2. Computational Aerodynamics Research Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China

Received date: 2014-12-30

  Revised date: 2015-04-02

  Online published: 2015-04-13

Supported by

Provincial/Ministerial Level Project

Abstract

Hypersonic inward turning inlet is optimized by a multistage method of separating the base flow and lip shape. Multi-objective optimization is imposed on the base flow with the target of minimizing the flow non-uniformity after the reflected shock and maximizing the total pressure recovery. The flow field has been solved by the method of characteristic (MOC) integrated with the Tayler-Maccoll equations. Base flow optimization obtains a dual-infection point internal cone's element. Inlet lip shape is optimized by the target of minimizing the inviscid drag obtained by streamline integral method (SIM) and a semi-oval two-dimensional lip shape is obtained. Compared with the traditional straight element base flow, dual-infection point internal cone flow's non-uniformity is decreased by about 40% and the total pressure loss is decreased by 35%, and thus the overall performance is enhanced significantly. Semi-oval inlet's inviscid drag per unit mass flow is decreased by 6% compared with the circle lip shape inlet at the design point, and its good compress characteristics and aerodynamic efficiency can partially get over the inlet system's adverse influence on the aerodynamic performance of vehicle. Research proves the design method of hypersonic inward turning inlet proposed in this paper is efficient and functional.

Cite this article

WANG Jifei , CAI Jinsheng , DUAN Yanhui . Multistage optimization design method of hypersonic inward turning inlet[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(12) : 3759 -3773 . DOI: 10.7527/S1000-6893.2015.0095

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