Computation for Vertical Flight Performance of High Speed Helicopter Based on CFD Method
In order to accurately predict the flight performance of high speed helicopter with coaxial rigid rotor configuration,CFD method with high precision is adopted to establish the aerodynamic force and required power models of rotor and fuselage.The momentum source method is employed to calculate the interaction between rotor/fuselage,and the additional load of fuselage due to the interaction is added to the aerodynamic force model of rotor in form of vertical weight,thus the aerodynamic force and required power of coaxial rigid rotor are calculated by trimming of manipulation.On these basis,by considering the strength limitation of the transmission system and the performance limitation caused by rotor stall,the vertical flight performances of the coaxial rigid rotor high speed helicopter are analyzed.The results indicate that the vertical flight performance of coaxial rigid rotor high-speed helicopter can be accurately obtained by using the high-precision rotor CFD method and trimming strategy.
NETL
NSTL
万方数据
维普
