Aerodynamic characteristics and flow mechanism of the configuration with variable forward-swept wing

The aerodynamic characteristics and flow mechanism of the aerodynamic configuration with variable forward swept wing was investigated by the Navier-Stokes control equation and flow-field numerical simulational method. In low subsonic speed, the wing is approximately orthogonal to achieve greater lift-drag ratio when taking off, cruising or Landing. In low transonic speed, the forward-swept angle can be appropriately adjusted in order to improve stall characteristics while needing to strike or maneuver. Moreover, during chasing or escaping at a supersonic speed, the wing is fully forward-swept as a delta wing to minish the supersonic wave drag. Reseach results of the paper provide references for high perfomance aerodynamic configuration design.