Ceramic gas turbine shroud
AssigneeHamilton Sundstrand Corporation
InventorsJun Shi, Kevin E. Green
Life of this patent
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Abstract
An example gas turbine engine shroud includes a first annular ceramic wall having an inner side for resisting high temperature turbine engine gasses and an outer side with a plurality of radial slots. A second annular metallic wall is positioned radially outwardly of and enclosing the first annular ceramic wall and has a plurality of tabs in communication with the slot of the first annular ceramic wall. The tabs of the second annular metallic wall and slots of the first annular ceramic wall are in communication such that the first annular ceramic wall and second annular metallic wall are affixed.
Claims8
A gas turbine engine shroud comprising:
- a first annular ceramic wall including an inner side for resisting high temperature turbine engine gases and an outer side with a plurality of radial slots;
- and
- a second annular metallic wall positioned radially outward of and enclosing the first annular ceramic wall and including a plurality of radial tabs in communication with the slot of the first annular ceramic wall such that the first annular ceramic wall and second annular metallic wall are affixed, wherein at least one of the tabs includes an opening through the at least one of the tabs to increase ductility of the at least one of the tabs, wherein the first annular ceramic wall encloses rotatable turbine blades and the first annular ceramic wall surrounds stator vanes, wherein the opening extends into the second annular metallic wall.
A gas turbine engine shroud comprising:
- a first annular ceramic wall including an inner side for resisting high temperature turbine engine gases and an outer side with a plurality of radial slots;
- and
- a second annular metallic wall positioned radially outward of and enclosing the first annular ceramic wall and including a plurality of radial tabs in communication with the slot of the first annular ceramic wall such that the first annular ceramic wall and second annular metallic wall are affixed, wherein at least one of the tabs includes an opening through the at least one of the tabs to increase ductility of the at least one of the tabs, wherein the first annular ceramic wall encloses rotatable turbine blades and the first annular ceramic wall surrounds stator vanes,
- wherein at least one slot is in communication with a spring strap attached to the second annular metallic wall, wherein the spring strap has the same profile as the shape of the slot.
Dependencies are inferred from the claim text.