Volume 34 Issue 6
Jun.  2019
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Intake and exhaust effect on aerodynamic characteristics of blended wing body civil aircraft with podded engines[J]. Journal of Aerospace Power, 2019, 34(6): 1297-1310. doi: 10.13224/j.cnki.jasp.2019.06.013
Citation: Intake and exhaust effect on aerodynamic characteristics of blended wing body civil aircraft with podded engines[J]. Journal of Aerospace Power, 2019, 34(6): 1297-1310. doi: 10.13224/j.cnki.jasp.2019.06.013

Intake and exhaust effect on aerodynamic characteristics of blended wing body civil aircraft with podded engines

doi: 10.13224/j.cnki.jasp.2019.06.013
  • Received Date: 2018-12-05
  • Publish Date: 2019-06-28
  • For the problem of the flow interaction between engine and airframe of blended wing body (BWB) civil aircraft with podded engines, taking a BWB civil aircraft designed by project team as the research object, the engine intake and exhaust effect on aerodynamic characteristics and its mechanism at low and high speed conditions were investigated by CFD method. The results indicate that the intake and exhaust mainly affect drag characteristics at high speed condition. As the engine intake mass flow decreases, the interaction between airframe/nacelle is intensified and the zero-lift drag of airframe is increased. The intake and exhaust effect on lift and pitching moment at low speed condition is mainly induced by the interference of engine suction effect on the airframe surface flow. The intake mass flow of engine has great effect on the aerodynamic characteristics of BWB transport. In the airframe/engine integration design of BWB transport, the interaction between airframe and engine should be considered and the effect of different intake and exhaust conditions on the local flow field of airframe and engine should be weighted.

     

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