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

Christophe G Gourio

Gerard E Jourdain

Didier Merville

Christophe Jean Champenois

Maurice Jean Cabaret

Gilles A Le Rumeur

Jean-Pierre Poitevin

Bruno Tournaire

A gas turbine engine impeller having a plurality of blades attached to a rotor disk and an integral, annular collar defining openings through which the blades extend which acts as a platform extending between the adjacent blades. The annular collar is formed as an integral, annular structure and may be formed from a composite material, or other material which is resistant to high temperatures and high centrifugal forces. The annular collar defines a plurality of openings to accommodate the blade portion of the plurality of blades and to enable the blades to extend radially outwardly from the collar. The openings may be formed in the annular collar when the collar itself is formed, or may be machined therein after the collar has been fabricated.

Gas turbine engine impeller having an annular collar platform

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Redon, France

Christophe G Gourio