Numerical Simulation and Analysis of Aerodynamic Interaction of Helicopter Rotor

Abstract

Problems exist aerodynamic interference between the rotor blades, which directly affects the performance of the rotor. Approximation to paddle around two parallel movements for analysis using CFD method based on N-S equations, analyzed the mechanism of the aerodynamic interference between the rotor blade, simulated the different Angle of attack, Mach number and the influence of wings spacing to interfere with the flow field. Results show that: the behind blades influenced by the front blades changes with the angle of attack and Mach number showed a favorable or unfavorable influence, the smaller influencing distance is, the greater influencing intensity is. These conclusions will be of theoretical support for the design of the rotor.