Snecma Moteurs

Other

Snecma

Patrice Rosset

Marc R Marchi

Jean-Luc Soupizon

Gilles Alain Charier

Jean-Claude Christian Taillant

Jean-Baptiste Arilla

Paul Rodrigues

Guy Dusserre-Telmon

Jean-Pierre Mareix

Zoltan Zsiga

Jean-Pierre Mourlan

Patrick J Girard

Patrick Rossi

Henri Popinet

Xavier Lescure

José Lopez

Charles Balleron

Claude Bion

Sandrine Tourbier

Thierry Alaux

Patrick Huchin

A turbomachine roller bearing that supports a shaft constituted by a trunnion of a shaft line of a high-pressure spool of a turbomachine to rotate relative to a stationary support that is connected to a casing of the turbomachine, said bearing comprising rollers inserted between an outer ring disposed adjacent to the stationary support and an inner ring disposed adjacent to the high-pressure trunnion, the inner ring extending along the axis beyond a downstream end of the high-pressure trunnion to which it is secured by clamping means, and being provided with anti-rotation means for preventing said inner ring from rotating relative to the high-pressure trunnion.

Turbomachine with a compact roller bearing

In a moving turbine wheel, blade inserts are used with at least two blades interconnected by common outer and inner platforms and sharing a common root. The blade inserts have hollow roots in which respective recesses are formed, and the insert roots belonging to the same wheel and/or two different wheels are voluntarily given different configurations in order to adjust the resonant frequencies of the inserts to values that are significantly different, thereby ensuring that the inserts in the same wheel and/or between two different wheels are out of tune.

Turbomachine turbines with blade inserts having resonant frequencies that are adjusted to be different, and a method of adjusting the resonant frequency of a turbine blade insert

A turbomachine includes a casing, a rotor, and a plurality of cooled ring segments installed between the casing and the rotor, each ring segment containing a main cooling cavity and being attached to the casing by a fastening device. The fastening device can include a clamping screw positioned more or less radially and pinning the ring segment against the casing. The clamping screw is crossed through by a cooling airway that communicates with the main cooling cavity of the ring segment.

Turbomachine with cooled ring segments

A sealing device is disclosed comprising a least one sealing leaf maintained axially in position by a retaining bracket which comprises a first end bearing on the sealing leaf and a bent-back second end engaged in a groove in a structural element. The sealing leaf is preferably retained radially in position by lugs which are bent so as to engage below lugs provided on the retaining bracket. When the sealing device comprises at least two adjacent sealing leaves placed edge to edge, the device also comprises a cover sheet so disposed between the sealing leaves and the retaining bracket as to cover the joint between the two adjacent leaves.

Leaf seal

Growing community of inventors

Le Mee sur Seine, France

Patrice Rosset