Structural Load Influence Analysis of Coaxial Rigid Rotor
An aeroelastic analysis model was established for the coaxial rigid rotor,and the analysis of the influence of the rotor load was carried out.In the aeroelastic analysis model,the geometrically accurate blade structure dynamics model and the rotor free wake model were used,and the coaxial rigid rotor load was calculated in combination with the loose coupling method.The theoretical model was validated with the XH-59 A and X2 hover and forward flight test states.The effects of structural parameters such as the number of rotor blades,overlapping azimuth angle,shaft forward inclination angle,and flight state parameters on the vibration load of the coaxial rigid rotor were analyzed.The results showed that the number of rotor blades increased and the vibration load decreased under the same solidity,the distribution of the odd-even blade overlap angle relative to the fuselage signifi-cantly affected the lateral and longitudinal vibration load levels,the shaft under the same lift and lift offset(LOS)as the rake angle increased,the vibration load increased.
万方数据
维普
