Snecma Moteurs

Patrick J Girard

Jean-Luc Soupizon

Philippe Pabion

Sebastien Alain Imbourg

Patrice Rosset

Patrick Rossi

Charles Balleron

José Lopez

Henri Popinet

Xavier Lescure

Sandrine Tourbier

Claude Bion

The distributor sectors () of a turbomachine are secured adjacent to a casing () with sealing sectors () alternating with them in the axial direction. The distributor sectors () are provided with force resistant faces () through which forces exerted on the distributor sectors are transmitted to the casing. The inner surface of the casing () is smoother and is not fitted with any hooks; consequently, this casing () is less complicated to make and is less mechanically stressed to retain the 10 distributor sectors, and the distributor sectors may be installed by a purely axial movement.

Arrangement for the attachment of distributor sectors supporting vanes around an arc of a circle

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

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Melun, France

Patrick J Girard