Aerodynamic Design of Tilt Rotor/Propeller Blade

Considering the operational characters of tilt rotor/propeller,a design method for tilt rotor/propeller is presented.This approach,based upon axial flow blade element theory and genetic algorithms,can define the rotor/propeller blade design variables to converge on a best compromise that meets the desired hover/cruise performance requirements.The design results show that an improvement of hover performace without causing a decrease of cruise efficiency can be obtained by the method.