Recirculating zone inducing means for an augmentor burning section
For a gas turbine engine having an augmentor including duct means defining a confined passageway for conducting the engine fluid working medium through the augmentor and a combustion section, a generally conically shaped tail cone disposed centrally within the duct having a base portion and a cone portion axially extending toward the aft end of the augmentor, the cone portion being secured to the base portion at a location defining a juncture, the base section including means for defining a pilot for defining a recirculation zone for the combustion section of the augmentor, means for admitting cooling air internally of the tail cone for cooling the tail cone, and means including a radial passage disposed at the juncture between the base portion and the cone portion for injecting a portion of the cooling air radially into the engine working medium for constraining the recirculation zone to be coextensive with the base portion and for creating a second recirculation zone juxtaposed to the recirculation zone extending the axial extent of the cone portion, a thin wall defining the tail cone, the thin wall defining an interior portion for receiving the cooling air, a pair of mating flanges disposed on the downstream end of the base portion and on the upstream end of the cone portion, respectfully, means securing the mating flanges, one of the mating flanges having a wider end portion at the mating surface to form a gap between the mating flanges, for injecting the cooling air radially into the engine working medium, whereby screeching in the tail cone is minimized.
- Assignee:
- United Technologies Corp., Hartford, CT (United States)
- Patent Number(s):
- US 5230214; A
- Application Number:
- PPN: US 7-942540
- OSTI ID:
- 6473269
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330103* -- Internal Combustion Engines-- Turbine
AUGMENTATION
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
COOLING
ENGINES
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
NOISE POLLUTION ABATEMENT
OXIDATION
POLLUTION ABATEMENT
STAGED COMBUSTION
THERMOCHEMICAL PROCESSES