Volume 30 Issue 8
Aug.  2015
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SUN Peng, GENG Xue, ZHAO Jia, ZHONG Jing-jun. Influence of wind directions on the flow field structures of helicopter rotor and deck[J]. Journal of Aerospace Power, 2015, 30(8): 1802-1810. doi: 10.13224/j.cnki.jasp.2015.08.002
Citation: SUN Peng, GENG Xue, ZHAO Jia, ZHONG Jing-jun. Influence of wind directions on the flow field structures of helicopter rotor and deck[J]. Journal of Aerospace Power, 2015, 30(8): 1802-1810. doi: 10.13224/j.cnki.jasp.2015.08.002
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Influence of wind directions on the flow field structures of helicopter rotor and deck

doi: 10.13224/j.cnki.jasp.2015.08.002

  • Marine Engineering College, Dalian Maritime University, Dalian 116026, China

  • Received Date: 2014-02-13
  • Publish Date: 2015-08-28
    Abstract
  • In order to study the interaction between helicopter rotor and deck flow fields, numerical simulation was carried out on a composite flow field made up of ship and rotor. Streamline patterns, vorticity distribution, and balance of the helicopter rotor with different wind directions were analyzed. The appearance and evolution of the main vortex structures were elaborated and the vortex structures were classified. Simulation results show that,the rotor and the deck interfere with each other's flow field, forming a complex composite flow field structure. The existence of the rotor, with the wind coming from 0 degree direction, markedly enlarges the vortex range and accelerates the downwash flow in the back area of the deck. Crosswinds enlarge the vortex range of the deck and intensify the imbalance of the rotor blades. It becomes unfavorable to the helicopter's hovering when the wind comes from 15 degree to the starboard, because the lifting and balance capacity of the rotor blades are the worst under this condition.

     

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