G - Physics – 03 – C
Patent
G - Physics
03
C
26/148
G03C 5/00 (2006.01) F23R 3/00 (2006.01) G03F 7/00 (2006.01) G03F 7/22 (2006.01) G03F 7/24 (2006.01)
Patent
CA 1116837
D-2563 C-3053 Abstract of the Disclosure A method for making an air cooled combustor of the slot film cooled type including artificially roughened convective channels to cool the liner wall components of a combustor for a gas turbine engine including the steps of: preforming a combustor wall segment having a curved surface thereon for directing cooling air from exteriorly of the combustor across inner wall surfaces thereof; coating the curved sur- face with photosensitive material; preparing a photo- transparency having a crosshatch grid thereon of continuously curved intersecting lines and thereafter projecting the crosshatch grid pattern against the photosensitive material on the conical surface to produce an exposed, uniform straight line grid pattern on the photosensitive material and thereafter photo- etching the uniform straight line pattern into the metal of the surface to produce a uniform array of raised lands across the curved surface of the wall segment for producing a uniform cooling of the por- tions thereof having convective air flow thereacross.
334111
General Motors Corporation
Gowling Lafleur Henderson Llp
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