JP2013170578A5 - - Google Patents

Claims (18)

Cross-sectional shape defined by an inner wall and an outer wall facing opposite front and rear walls, comprising a composite material comprising reinforcing fibers embedded in a matrix and extending between opposing first and second end faces A shroud segment for a gas turbine engine, wherein the inner wall defines an arcuate internal flow path surface, and a composite fillet is disposed at a joint between the first and second walls of the wall, fillet comprises a first and second portion, said second portion have a concave surface extending to said first wall of said wall, said first portion, called the second wall thickness A shroud segment representing the part added to the height. The shroud segment of claim 1, wherein the thickness of the first wall is minimal within the second portion of the composite fillet. The shroud segment of claim 1, wherein the first portion comprises a surface disposed at an acute angle with respect to the first and second walls. The shroud segment of claim 1, wherein the first wall is the inner wall. The shroud segment of claim 1, wherein the second wall is the rear wall. The shroud segment of claim 1, wherein the composite material comprises a ceramic matrix composite material. An annular metal hanger,
Cross-sectional shape defined by an inner wall and an outer wall facing opposite front and rear walls, comprising a composite material comprising reinforcing fibers embedded in a matrix and extending between opposing first and second end faces A shroud segment disposed on the inside of the hanger, wherein the inner wall defines an arcuate inner flow path surface, and a composite fillet at a junction between the first and second walls of the wall A shroud segment disposed and wherein the composite fillet includes first and second portions, the second portion having a concave surface extending into the first wall of the walls;
A retainer mechanically coupled to the hanger that engages the shroud segment that holds the shroud segment against the hanger while allowing radial movement of the shroud segment ;
A shroud device for a gas turbine engine , wherein the first portion represents a portion added to a nominal thickness of the second wall . The apparatus of claim 7 , wherein the retainer includes a central portion having a pair of opposing arms extending laterally outward. The apparatus of claim 7 , wherein a surface of the retainer is clamped against the hanger and the outer wall of the shroud segment is confined between the hanger and a portion of the retainer. The hanger and spring clamped between the retainer, the shroud segments to press radially inwardly against said retainer resiliently abuts against the shroud segment, according to claim 9, wherein Equipment. 8. The apparatus of claim 7 , wherein the inner wall extends axially forward past the front wall to define a front protrusion, and the inner wall extends axially rearward past the rear wall to define a rear protrusion. . The apparatus of claim 7 , wherein the hanger is enclosed and carried by an annular turbine case. The apparatus of claim 12 , wherein the hanger comprises axially spaced front and rear hooks received by the front and rear rails of the turbine case, respectively. The apparatus of claim 7 , comprising a transition wall disposed between the front wall and the outer wall and extending at an acute angle with respect to the front wall and the outer wall. The apparatus of claim 14 , wherein the transition wall extends substantially parallel to the body of the hanger. The apparatus of claim 7 , wherein the hanger includes an elastic rear inner leg that elastically loads the shroud segment axially forward relative to a bearing surface of the front inner leg of the hanger. The apparatus of claim 7 , wherein the shroud segment comprises a ceramic matrix composite material. The apparatus of claim 7 , wherein the annular rings of the shroud segments are arranged in an annular row within the case.