System And Method For Controlling Propeller Pitch

Abstract: Systems and methods are disclosed for controlling the pitch angle (I) of a propeller and rotor assembly (14, 16) that selectively limit the pitch angle (I) according to a selected mode of operation. The system comprising a fine stop collar (48) defining a primary channel (56), an oil transfer bearing (OTB) (72) extending across the fine stop collar (48), and an actuator piston (46) engaged with a propeller blade crankshaft (114) to vary propeller blade pitch (I), the annular piston (46) being positioned about the OTB (72) in fluid communication with the primary channel (56). Fig.1

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