Performance and Vibratory Load Analyses of a Rigid Coaxial Rotor with Lift-offset

Key Points

• To analyze the aerodynamic performance and vibratory loads of a rigid coaxial rotor with lift-offset.
• Utilized CAMRAD II for modeling and analysis.
• Examined various pitch link stiffness and lift-offset conditions.
• Assessed aerodynamic performance and vibratory load on rotor hub and pitch link.
• No significant change in aerodynamic performance with decreased pitch link stiffness.
• Vibratory load increased as pitch link stiffness decreased.
• Aerodynamic performance improved with increased lift-offset at 250 knots.