Snecma Moteurs

Fabrice Marois

Dominique Raulin

Alain Chatel

Jacky S Naudet

Claude J Loudet

Patrick Edmond Kapala

Gabriel Radeljak

Alain Bouron

Gr&eacute;gory Garcia

Gra&euml;me Cook

Serge Bongrand

Christophe Charon

Eric Lippinois

Alain Henri Daniel Bouron

Lucien Pham

Sébastien Georges Roger Goux

A device for stopping rotation of a fixed blade bearing sector in a gas turbine casing. Sectors of synchronizing ring blades are maintained against tangential rotational movements by sliding into grooves of a casing by pins passing through perforations in an extension of the two parts. The pins are prevented from accidental removal either by a flexible lock ring or by a locking tab maintained between the two parts when they have been completely assembled.

Device for stopping in rotation a fixed blade bearing sector in a gas turbine casing

A device for controlling variable-pitch vanes in a turbomachine comprises links connecting the radial pivots of the vanes to radial fingers carried by semicircular elements and bridges of a control ring, the links being mounted in ball-and-socket manner on the radial fingers which are fixed to the control ring. This form of mounting enables all the vanes associated with the control ring to be set to the same angular pitch.

Device for controlling variable-pitch vanes in a turbomachine

A spring ( ) of angular shape is placed between the lug ( ) of a connecting rod ( ) controlling the orientation of a stator blade and the pivot ( ) of said blade, such that its edge ( ) bends against one edge face ( ) of the connecting rod ( ) and the washer ( ) moves the pivot ( ) in the play of the bore ( ) of the connecting rod and sets and maintains the contact between two plane faces ( and ), so as to reduce the differences in angular displacements between the connecting rod and pivot due to the play remaining in the bore ( ).

Stator blade pivoting arrangement in a turbomachine

A low of compressed air originating from a compressor stream ( ) is drawn off through first orifices ( ) towards ducts ( ) leading outside the casing, creating a flow division through adjacent cavities ( ) in the casing ( ). These arrangements make it possible to carry a large air flow even if the cavity cross sections ( ) are small.

Compressor air drawing off system

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Melun, France

Fabrice Marois