Experimental Characterization of a Rotor to Dynamic Collective Pitch Inputs in Hover
Patrick Mortimer,
Jayant Sirohi
Abstract:Experiments were performed on a two-meter diameter, four-bladed rotor to extract the coefficients of a dynamic inflow model. The frequency response of rotor induced velocity to rotor thrust was found by introducing stepped-sine collective pitch inputs at frequencies of 0.2 per revolution to 0.7 per revolution, where the rotor rotational frequency was 14 Hz. The induced velocity field was measured using phase-resolved, two-dimensional, three-component particle image velocimetry (PIV) over a large region of inte… Show more
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