Patent ID: 6735950
Filing Date: 2004-05-18
Classification: F23R,Y02T,Y10T

Abstract:
A method of making a dome plate for a gas turbine engine combustor which defines a combustion chamber, said method comprising the steps of:forming an annular body, including providing said annular body with a relatively flat portion extending between a pair of curved corners, each corner defining a single radius of curvature so as to create an inner surface which is concave with respect to said combustion chamber; forming a plurality of swirler openings in said relatively flat portion of said annular body, wherein the portions of said annular body immediately surrounding said swirler openings are flush with the remainder of said relatively flat portion of said body; machining an array of cooling holes in said relatively flat portion of said annular body adjacent to each of said swirler openings; and machining an array of blow-off holes in at least one of said outer and inner curved corners, said blow-off holes being arranged in distinct groups around the circumference of said annular body, wherein said groups are located circumferentially between adjacent ones of said swirler openings and wherein said groups have a circumferential extent which is less than the circumferential spacing between said groups.