带升力风扇飞翼布局开口机翼气动特性研究

为获得带升力风扇飞翼布局飞机因开口对机翼气动特性的影响规律,对平飞状态下开口机翼的气动特性进行三维气动仿真,分析升力系数、阻力系数和力矩系数随来流速度和迎角变化的特性.结果表明:随着来流速度增大,阻力和力矩呈上升趋势;来流速度一定时,随着迎角加大,升力系数增大,阻力系数先减小后增大;随着迎角增大,力矩系数先减小后增大再减小,且一直产生低头力矩.

Study on aerodynamic characteristics of lift-fan aircraft openings with flying wing configuration

In order to obtain the effect laws of the openings on the aerodynamic characteristics of the flying wing configuration aircraft with lift-fan,the three-dimensional aerodynamics characteristics simulation of the opening wing was proceeded in level flight condition,and the characteristics of lift coefficient,drag coefficient and moment coefficient changing with the flow velocity and angle of attacked were analyzed.Results show that the drag coefficient and moment coefficient are on the rise with the increasing of the velocity.Under the same flow velocity,with the increasing of angle of attack,the lift coefficients increase,the drag coefficients are decreased firstly and then increased;the moment coefficients are decreased firstly and then increased and decreased,and always produce down moment.