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

Michel Jean-Pierre Pernot

Claude Marcel Mons

Marc R Marchi

Eric Stephan Bil

Anne-Marie Arraitz

Didier Marie Mortgat

Michel Gerard Hacault

Laurent Philippe Leray

Roland R Spinat

Thierry Christian Sanz

Michel Jean Loubet

Jean Manuel Morcillo

A method of reducing the gap between a liner and a turbine distributor of a turbojet engine. The method allows for the improvement of the seal on the inside of the distributor of the high pressure turbine at the lower platform. The method includes the steps of: applying a protective deposit to the lower part of the external surface of the liner, before carrying out a filling by diffusion brazing between the liner and the distributor. The protective deposit, preferably a anti-adherent ceramic, makes it possible for the braze to avoid fixing the liner onto the distributor at the lower platform level. The method also has applications to turbojet engines.

Method of reducing the gap between a liner and a turbine distributor of

A seal intended to wear from abrasion for use in contact with a rotor zone of a rotating machine, of the type made up of a dispersion of hollow microspheres in a binder providing cohesion of the microspheres among themselves and their attachment to a metallic support. In order to make it possible to produce the seal by torch spraying from a powdered mixture onto the support, the hollow microspheres are made of an inorganic refractory material and the binder material is a metallic material more fusible than the material of the microspheres.

Abradable seal and its method of production

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Fontenay, France

Michel Jean-Pierre Pernot