VARIABLE PITCH FAN

• Main Authors: BELMONTE, Olivier, LEVISSE, Paul Ghislain Albert
• Format: Patent
• Language: English; French; German
• Published: 22.11.2023
• Subjects: AEROPLANES; AIRCRAFT; AVIATION; BLASTING; CASTING; COSMONAUTICS; HEATING; HELICOPTERS; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; POWDER METALLURGY; PRODUCING MECHANICAL POWER; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TRANSPORTING; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; WORKING METALLIC POWDER

The invention relates to a device comprising a fixed actuator for a control system for the orientation of fan blades of a turbomachine, comprising: at least one actuator body housed inside an annular casing of the turbomachine forming a bearing support, the annular casing being centred on a longitudinal axis of the turbomachine an inclined relative thereto, the actuator body having an internal volume in which a piston is able to slide, separating the internal volume into two chambers isolated from one another; and a plurality of actuator rods passing through the annular casing forming a bearing support and each having one end fixed to the piston and an opposite end intended to be connected to an internal ring of a movement transfer bearing in order to drive it in translation, the internal volume of the actuator body being closed downstream by a chamber bottom which forms a single part with the annular casing forming a bearing support.