Societe Nationale D'etude Et De Construction De Moteurs D'aviation

Christian Largillier

Marc R Marchi

Jerome M Friedel

Gerard Jacques Stangalini

Laurent Palmisano

Device for cooling the external part of a turbine disk (2) by means of an external fresh air current (circuit II) without mixing with the warmer ventilation from the center of the disk (circuit I). A part (30) through which ducts (31, 32) pass that intersect without interruption, prevents mixing of substantially perpendicular streams in front of a part (22) of the disk (2) and a mixture which reduces the cooling efficiency.

Turbine disk cooling device

A depressurization device for the lubrication chambers which surround the bearings of a turbomachine comprises venting ducts which communicate the lubrication chambers with the outside, and is provided with an auxiliary pumping mechanism which is arranged to be operated, when required, by way of an external pressure source. Preferably the venting ducts are provided with an air/lubricant separator and the auxiliary pumping mechanism comprises a jet nozzle which is located in the air exhaust duct from the separator, the external pressure source being the compressor of another turbomachine.

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Le Mee Sur Seine, France

Christian Largillier