Volume 39 Issue 9
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XU De, XU Xiaoping, XIA Jiyu, et al. Aerodynamic-propulsion coupling characteristics of distributed electric propulsion system[J]. Journal of Aerospace Power, 2024, 39（9）：20220681 doi: 10.13224/j.cnki.jasp.20220681
Citation: XU De, XU Xiaoping, XIA Jiyu, et al. Aerodynamic-propulsion coupling characteristics of distributed electric propulsion system[J]. Journal of Aerospace Power, 2024, 39（9）：20220681 doi: 10.13224/j.cnki.jasp.20220681
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Aerodynamic-propulsion coupling characteristics of distributed electric propulsion system

doi: 10.13224/j.cnki.jasp.20220681

  • School of Aeronautics，Northwestern Polytechnical University，Xi’an 710072，China

  • Received Date: 2022-09-13
    Available Online: 2023-11-13
    Abstract

  • A momentum source method (MSM) for solving the Reynolds average Navier-Stokes (RANS) equations based on the $k {\text{-}} \omega $ SST (shear stress transpot) turbulence model was adopted. For the two-dimensional simplified model of the distributed propulsion wing with lift flaps, research on the aerodynamic-propulsion coupling characteristics and physical mechanism in the vertical take-off, transition and cruise flight state was carried out. The research showed that the suction effect of the duct made the distributed propulsion wing show the phenomenon of increasing lift and reducing drag, and delayed the flow separation of the wing. Compared with the freestream condition, the stall declination angle of the lift flaps in the ducted jet significantly increased from 12° to 34°, and at the same time the lift flaps induced jet deflection, so that the total lift of the distributed propulsion configuration was effectively raised.

     

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