Abstract:In view of the influence of the front and rear edges of the wing on the static aeroelasticity of the canard-forward-swept wing configuration aircraft, through threedimensional unsteady N-S equations and linear elastic statics equations solved by the CFD/CSD loosely coupled calculation method, the aerodynamic and elastic characteristics of the elastic forwardswept wing are obtained under condition of the state of independent deflection and coordinated deflection of the leading and rear edges control surface. The results show that the elastic wing is characterized by better lift characteristics and high angle of attack stall characteristics compared with the rigid wing, and the changes of the control surface deflection method also affect the aerodynamic and elastic characteristics.When the control surface is deflected alone, both of the downward deflection of the leading edge control surface and the downward deflection of the trailing edge control surface can increase the lift coefficient of the elastic wing, and the maximum lift coefficient increments are 2.60% and 8.69% respectively. When the control surfaces are deflected in coordination, the lift coefficient in deflecting in the same direction is greater than that of single deflection, and the maximum lift increment is 11.96%. The liftdrag ratio of reverse deflection is better, and the elastic deformation and torsion can be reduced in the range of small angle of attack.