초록 ▼

A combustor heat shield panel is secured relative to a combustor shell so as to hold the panel exterior surface spaced apart from and facing the shell interior surface over major area of the panel exterior surface. A gap is formed between the heat shield exterior surface and shell interior surface a

A combustor heat shield panel is secured relative to a combustor shell so as to hold the panel exterior surface spaced apart from and facing the shell interior surface over major area of the panel exterior surface. A gap is formed between the heat shield exterior surface and shell interior surface along at least a major portion of the perimeter of the heat shield.

대표청구항 ▼

What is claimed is: 1. A combustor heatshield panel comprising: an interior surface; an exterior surface; a plurality of cooling gas passageways having inlets on the exterior surface and outlets on the interior surface; a plurality of studs extending from the exterior surface and having distal thre

What is claimed is: 1. A combustor heatshield panel comprising: an interior surface; an exterior surface; a plurality of cooling gas passageways having inlets on the exterior surface and outlets on the interior surface; a plurality of studs extending from the exterior surface and having distal threaded portions; and a plurality of standoffs having distal surfaces for engaging a mounting surface and protruding by a distance at least 0.2 mm greater than protrusion of any perimeter rail extending at least 20% of a length of a perimeter of the panel. 2. The panel of claim 1 wherein: each standoff is formed as a collar or a pin array encircling a portion of an associated one of the studs. 3. The panel of claim 1 wherein: said distance is at least 0.4 mm greater. 4. The panel of claim 1 wherein: the panel has a main body portion and each stud is either unitarily formed with the main body portion or is non-unitarily integrally formed with the main body portion. 5. The panel of claim 1 wherein the panel perimeter has: a leading edge; a trailing edge; and first and second lateral edges between the leading and trailing edges. 6. A combustor heat shield panel and shell combination comprising: a heatshield panel comprising: an interior surface; an exterior surface; a perimeter, a plurality of cooling gas passageways having inlets on the panel exterior surface and outlets on the panel interior surface; a shell comprising: an interior surface; an exterior surface; a plurality of cooling gas passageways having inlets on the shell exterior surface and outlets on the shell interior surface; and means securing the panel to the shell so as to hold the panel exterior surface spaced apart from and facing the shell interior surface over a major area of the panel exterior surface, with a gap between the panel exterior surface and shell interior surface along at least a major portion of the perimeter. 7. The combination of claim 6 wherein the gap extends around the entirety of the perimeter. 8. The combination of claim 6 wherein the panel exterior surface has a rail within 12.7 mm of the perimeter extending toward the shell along a major portion of the gap. 9. The combination of claim 8 wherein the rail extends around the entirety of the perimeter. 10. The combination of claim 6 wherein the panel exterior surface lacks a rail extending toward the shell along a major portion of the gap. 11. The combination of claim 6 wherein the gap has a height of at least 0.2 mm along a majority of the perimeter. 12. The combination of claim 6 wherein the means comprise a plurality of studs and wherein the heatshield and shell are noncontacting beyond areas within 12.7 mm of axes of the studs. 13. The combination of claim 6 wherein: the means comprise a plurality of studs; the panel has a main body portion; and each stud is either unitarily formed with the main body portion or is non-unitarily integrally formed with the main body portion. 14. The combination of claim 13 wherein: the means further comprise a plurality of standoffs; chambers are formed between the studs, standoffs, panel exterior surface, and shell interior surface. 15. The combination of claim 6 wherein the panel perimeter has: a leading edge; a trailing edge; and first and second lateral edges between the leading and trailing edges.