Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Performance Assessment of the Dual-Throat Nozzle Thrust Vector Control in a 3D Rectangular Nozzle

3D 직사각형 노즐에서 이중 스 로트 노즐 스러스트 벡터 제어의 성능 평가

  • Wu, Kexin (Department of Mechanical Engineering, Andong National University) ;
  • Kim, Tae Ho (Department of Mechanical Engineering, Andong National University) ;
  • Kim, Heuy Dong (Department of Mechanical Engineering, Andong National University)
  • Received : 2019.12.03
  • Accepted : 2020.05.25
  • Published : 2020.08.31
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Abstract

The dual-throat nozzle is an extremely effective method in the thrust vectoring control field, utilizing another convergent section to connect with the divergent part of the conventional convergent-divergent nozzle. In the present research, the numerical simulation is conducted to investigate the effects of the injection angle on thrust vectoring performance in a 3D supersonic nozzle. Five injection angles are discussed and core performance variations are analyzed, including the deflection angle, injected mass flow ratio, system resultant thrust ratio, efficiency, Mach number contour and streamline on the symmetry plane, and Mach number contours at different slices. Meaningful conclusions are offered for fighter jet designers.

이중목 노즐은 유체 추력벡터제어 분야에서 특히 효과적인 방법이며, 다른 축소부가 종래의 축소-확대 노즐의 확대부에 연결된다. 본 연구에서는 3차원 초음속 직사각형 노즐에서 추력벡터제어 성능에 대한 분사각의 영향을 조사하기 위하여 수치해석을 수행하였다. 5개의 분사각에 대하여 다루었으며, 편향각도, 분사 질량유량비, 시스템 전체 추력비, 전체 피칭 추력효율, 대칭면에서의 마하수 분포와 유선 및 다른 면에서 마하수 분포를 포함하는 임계 성능변화가 정량적으로 그리고 정성적으로 분석되었다. 본 연구의 결과는 특히 전투기 설계자에게 유용한 기술적 자료를 제공한다.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government(MSIP) (No. NRF-2016R1A2B3016436).

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