Snecma

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

Alain J Guibert

Remy P Ritt

Jean-Pierre L Mareix

Patrick Kapala

Roland R Mestre

Alain J Henu

Florence J Monchois

Roland M Grateau

Michel M Ribault

A turbine casing includes circumferential walls delimiting an annular stream for the flow of gases. The radial arms traversing the stream are completed by a channeling part on the downstream side which is bolted to the arms. The walls are formed of butt-joined tiles assembled together and joined to collars situated on the arms and the channeling parts by riveted ridge tiles. The invention results in a reduction of resistance to the flow of gases, as well as absorption without the production of excessive stresses of the original thermic dilations in the walls.

Turbine casing delimiting an annular gas flow stream divided by radial

A turbine ring has an annular metallic carrier which is mounted within the inside of the turbine casing and within the carrier there is provided a ceramic abradable ring. A cooling air circuit is provided to regulate the temperature of only the annular carrier such that the latter always exerts a centripetal compression force on the ring under all operational conditions of the gas turbine to clamp the abradable ring.

Turbine ring for a gas turbine engine

Growing community of inventors

Savigny-Le-Temple, France

Alain J Guibert