Simplified pitch actuation system for a turbomachine propeller

A pitch actuating system for a turbomachine propeller including an actuator having a movable portion configured to be connected to propeller blades for displacement thereof in rotation with respect to the pitch axes of the blades. A first pitch control system for the blades, includes a first transmi...

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Bibliographische Detailangaben
Hauptverfasser:	De Wergifosse, Huguette, Brettes, Frédéric
Format:	Patent
Sprache:	eng
Schlagworte:	AEROPLANES AIR INTAKES FOR JET-PROPULSION PLANTS AIRCRAFT AVIATION BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS COSMONAUTICS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HELICOPTERS HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A pitch actuating system for a turbomachine propeller including an actuator having a movable portion configured to be connected to propeller blades for displacement thereof in rotation with respect to the pitch axes of the blades. A first pitch control system for the blades, includes a first transmission screw movable in rotation, a first nut traversed by the first transmission screw and configured to cooperate with the blades for their displacement, an auxiliary system for feathering the blades, which comprise a second fixed transmission screw, a second nut traversed by the second transmission screw and movable in translation on the second nut, and wherein the pitch actuation system is configured so that a translational movement of the second nut causes a translational movement of the first transmission screw.