Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1999-04-15
2000-08-15
Kim, Ted
Power plants
Combustion products used as motive fluid
Combustion products generator
60757, 60 3937, 60748, 60742, F02C 300, F02K 964, F23R 306
Patent
active
061018147
ABSTRACT:
A low emissions combustor can 18 for an aircraft gas turbine engine includes a louvered combustor liner 24 with three arrays of dilution holes 52, 54, 56. The first hole array comprises twelve equally sized, equiangularly distributed holes that penetrates the liner about midway along its axial length. The second hole array comprises twelve equally sized holes, smaller than the holes of the first array, that penetrate the liner a predetermined distance aft of the first hole array. The holes of the second array are equiangularly distributed and each second hole is circumferentially aligned with a first hole. A third hole array penetrates the liner a predefined distance aft of the first array. The third holes are nonuniformly sized and nonequiangularly distributed to regulate the spatial temperature profile of combustion gases exiting the combustor can. The quantity, size, distribution and location of the holes mitigates undesirable exhaust emissions without affecting the performance or durability of the engine. Accordingly, the combustor can may be used to replace an existing combustor can in an older generation gas turbine engine.
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JT8D Dilution Hole Comparison.
Hoke James B.
Mountz Daryl B.
Olsen Howard
Sonntag Robert M.
Baran Kenneth C.
Kim Ted
United Technologies Corporation
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