Aerodynamic Analysis of the Rotor/Wing in Conversion Flight

Abstract

The aerodynamics of the rotor/wing during conversion from rotary to fixed-wing flight was numerical investigated. It is shown that increasing forward speed can provide more thrust when rotation speed and collective angle maintain a constant, but also appear greater torque. Thrust of the rotor/wing can maintain aircraft to hover at some cases when forward speed changes with other variable. As long as major and minor rotor converse with reasonable variable change alternatively, the dual rotor/wing can converse smoothly. Moreover, the total drag of minor first conversion is smaller than that of major first conversion.