Patent ID: 8839627

Claim:
An annular combustor comprising: an annular outer shell including a first flange defining an inner diameter ID OS ; an annular inner shell radially spaced from the annular outer shell to define an annular combustion chamber there between, the annular inner shell including a second flange defining an outer diameter OD IS ; an annular hood including a radially outer hood flange and a radially inner hood flange; and a bulkhead dividing the annular combustion chamber and the annular hood, the bulkhead including a radially outer bulkhead flange defining an outer diameter OD B and a radially inner bulkhead flange defining an inner diameter ID B , the first flange being secured in a radially outer joint between the radially outer hood flange and the radially outer bulkhead flange, the second flange being secured in a radially inner joint between the radially inner hood flange and the radially inner bulkhead flange, the ID OS and the OD B defining a ratio R1 of ID OS /OD B that is 0.998622-1.001129, and the ID B and the OD IS defining a ratio R2 of ID B /OD IS that is 0.998812-1.001388.