Snecma

Snecma Moteurs

Pierre-Yves Maillard

Jean-Baptiste Arilla

Claude R Lejars

Jérôme Mace

Jerome Mace

François Buffenoir

Thierry Niclot

Alain Marc Lucien Bromann

Alain Marc Bromann

Unbalanced mass effects can occur at the low pressure compressor () of an aircraft engine. Stiffeners () are proposed to increase the stiffness of the assembly and therefore reduce possible cracks due to accidental unbalanced masses, one end () of the stiffener can be fixed to the engine casing () at the structural arm (), and the other end () can be fixed to the compressor (), preferably at the upstream face of the third guide vane (RD). Advantageously, the stiffeners () are made of two parts fixed to each other; their manufacturing is optimized to limit the additional weight due to their presence.

Stiffener for low pressure compressor for an aircraft engine

The system enables an increase in the guidance length of the outer pivot of the vane, so that the bushing can be extracted without needing to open the stator casing. It mainly includes a bushing placed inside a bossing of the stator, the length of which is greater than the length of the bossing projecting outwards from the bossing. Thus, the contact length of the outer pivot is prolonged. The bushing is terminated at its end by a gripping hook to enable extraction of the bushing by means of a claw. It is advantageously also provided with a positioning edge.

Guide system for the outer pivot of a variable stator vane, for a turbojet stator

Growing community of inventors

La Chapelle Gauthier, France

Pierre-Yves Maillard