Abstract
Variable forward-swept wing (VFSW) aircraft is a kind of typical morphing aircraft. With the change of forward-swept angle, the airfoil of Variable forward-swept wing which is based on incoming flow will also be changed, and this change has a very important influence on flight performance. In order to explore this impact, this paper firstly build nine airfoil models under different forward-swept angle, through the calculation by fluent, the impact on airfoil aerodynamic characteristics from angle of attack, mach number and forward-swept angle is analyzed. The results show that, while flying at the sea level in a low angle of attack, the lift coefficient, resistance coefficient and moment coefficient will increase with the rise of forward-swept angle, but while flying in a high angle of attack, these coefficients will decrease with the rise of forward–swept angle. The results also can provide references for further research of aerodynamic configuration of variable forward-swept wing aircraft.
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