NASA Technical Reports Server (NASA) · 1979 · 11 citations · 0 references
EngineeringAerospace EngineeringMechanical EngineeringAeroelasticityFlight MechanicsStructural DynamicsAeroelastic ModelingAircraft StabilityNonlinear AeroelasticityRotor AeroelasticityRotor DynamicsRotordynamicsAeroelastic ResponseCoupled Partial Differential EquationsForward Flight AerodynamicsHelicopter Rotor AeroelasticityNonlinear Aeroelastic ResponseNonlinear Aircraft DynamicsPeriodic Aeroelastic AnalysisRotorcraft Stability
The governing equations of motion of a helicopter rotor coupled to a rigid body fuselage are derived. A consistent formulation is used to derive nonlinear periodic coefficient equations of motion which can be used to study coupled rotor/fuselage dynamics in forward flight. The methodology of rotor/fuselage coupling is clearly described and the importance of an ordering scheme in deriving consistent nonlinear equations of motion is reviewed. The final equations which are presented in partial differential form can be used to model coupled rotor/fuselage aeroelastic response or stability problems.