VISCOUS FLOW CALCULATIONS OF HELICOPTER MAIN ROTOR SYSTEM IN FORWARD FLIGHT

전진 비행하는 헬리콥터 주로터 시스템의 점성 유동 해석

In the present study, viscous flow calculations of helicopter main rotor system in forward flight were made by using an unstructured hybrid mesh solver. Each rotating blade relative to the cartesian frame was simulated independently by adopting unstructured overset mesh technique. For the validation of the present method, calculations for the Caradonna-Tung non-lifting forward flight and the AH-1G main rotor system in forward flight were made. Additional computation was made for the UH-60A rotor in forward flight. Reasonable agreements were obtained between the present results and the experiment.