Device for controlling pitch of blades of non-ducted propeller of turbojet of aircraft, has flow reduction unit to limit flow of fluid leaving chambers under effect of displacement of piston in event of interruption of supply of fluid

摘要

The device has a jack (22) comprising a cylinder (24) in which a sliding piston (30) is mounted. The piston separates two chambers (26, 28) that are connected to a supply unit that is utilized for supplying pressurized fluid i.e. oil. A rod (32) is arranged interdependent of the piston, and is intended to be connected to a mobile unit. A flow reduction unit (52) is mounted in a drain pipe (54) to limit the flow of the fluid leaving the chambers under the effect of displacement of the piston in the event of interruption of the supply of fluid under pressure.