Volume 37 Issue 1
Jan.  2022
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WANG Qimin, ZHENG Longqian, ZHANG Meihong. Influence of outboard nacelle chine on the low-speed characteristics of civil transport aircraft[J]. Journal of Aerospace Power, 2022, 37(1): 142-151. doi: 10.13224/j.cnki.jasp.20210333
Citation: WANG Qimin, ZHENG Longqian, ZHANG Meihong. Influence of outboard nacelle chine on the low-speed characteristics of civil transport aircraft[J]. Journal of Aerospace Power, 2022, 37(1): 142-151. doi: 10.13224/j.cnki.jasp.20210333

Influence of outboard nacelle chine on the low-speed characteristics of civil transport aircraft

doi: 10.13224/j.cnki.jasp.20210333
  • Received Date: 2021-06-28
  • Publish Date: 2022-01-28
  • For the purpose of improving the aerodynamic performance of the civil transport aircraft with the high-lift devices deployed at high angle of attack,the numerical simulation method of Reynolds average Navier-Stokes (RANS) turbulence model was used to analyze the stall characteristics of aircraft with the wing-mounted nacelle configuration.The mechanism of the outboard nacelle chine was investigated.Design exploration of the installation position and angle of the outboard nacelle chine was carried out.The vortex from the outboard slat and main wing aggravated the flow separation on the wing upper surface behind the nacelle/pylon.The vortex induced by designed outboard nacelle chine suppressed the flow separation,which increased the maximum lift coefficient.The installation position of the outboard nacelle chine affected the intensity,spanwise position and height of the induced vortex.The installation angle mainly affected the induced vortex intensity.The maximum lift coefficient increased by 2.1% with the outboard nacelle chine.

     

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