Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1978-12-18
1980-11-11
Kimlin, Edward C.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
60722, 156664, 1566591, 430323, 430320, 20412943, G03C 500, G03C 1100, C25F 302
Patent
active
042331234
ABSTRACT:
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 surface with photosensitive material; preparing a phototransparency 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 photoetching 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 portions thereof having convective air flow thereacross.
REFERENCES:
patent: 2166367 (1939-07-01), Norris
patent: 2182559 (1939-12-01), Henderson
patent: 2317551 (1943-04-01), Ormond
patent: 2373087 (1945-04-01), Alger
patent: 2662455 (1953-12-01), Freund
patent: 3610143 (1971-10-01), Greenwood
patent: 3735589 (1973-05-01), Caruel et al.
patent: 3737152 (1973-06-01), Wilson
patent: 4038040 (1977-07-01), Nagl
patent: 4059479 (1977-11-01), Tanazawa
patent: 4151040 (1979-04-01), Schiffman
Evans J. C.
General Motors Corporation
Kimlin Edward C.
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