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Analysis of Helicopter Vibratory Hub Loads Alleviation by Cyclic Trailing–Edge Blade Flap Actuation
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Alleviation of Helicopter Vibrating Hub Loads Through Cyclic Trailing-Edge Blade Flap Actuation
No full textAlleviation of Helicopter Vibrating Hub Loads Through Cyclic Trailing-Edge Blade Flap Actuation
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Combined Action of Variable-Stiffness Devices and Trailing-Edge Flap for Helicopter Hub Loads Reduction
No full textA Comprehensive Approach for the Optimal Control of Tiltrotor Cabin Noise Through Actively-Driven Piezoelectric Actuators
No full textAssessment of Aerodynamics Models for Wind Turbines Aeroelasticity
No full textA comprehensive computational tool for the aeroelastic analysis of horizontal axis
wind turbines (HAWT) is presented. The proposed aeroelastic tool couples a nonlinear
beam model for blades structural dynamics with an unsteady state-space sectional
aerodynamic model taking into account dynamic stall. Three-dimensional wake inflow
effects are described by a Boundary Element Method for the solution of incompressible,
potential, attached flows. To this aim, different coupling approaches are compared. The
resulting aeroelastic differential system is integrated through the Galerkin method, with
the introduction of a novel technique for the spatial integration of the additional
aerodynamic states related to wake vorticity and dynamic stall. Periodic blade
responses are determined by a harmonic balance approach. The effectiveness of the
proposed unsteady aerodynamic modelling is discussed, with numerical and
experimental comparisons
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