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US 8,739,548 B2Granted
Sliding ramp nozzle system for a gas turbine engine
AssigneeUnited Technologies Corporation
InventorDale William Petty
Life of this patent
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Abstract
A regulator system includes a slidable ramp intermediate a secondary flow path and a primary flow path of a gas turbine engine nozzle section.
Claims23
A jet area regulator system for a gas turbine engine comprising:
- a ramp adjacent a secondary flow path for a secondary flow and a primary flow path for a primary flow, said ramp axially slidable to regulate said secondary flow, said ramp adjacent to a plenum to facilitate a pressure balance of said ramp, said plenum downstream of said ramp, and wherein said ramp is downstream of a planar primary nozzle of said primary flow path.
A nozzle section for a gas turbine engine comprising:
- a secondary flow duct with a generally planar secondary nozzle to communicate a secondary flow therethrough;
- a primary flow duct with a generally planar primary nozzle to communicate primary flow therethrough, said generally planar primary nozzle adjacent to said generally planar secondary nozzle;
- a ramp axially slidable relative to a passage in communication with said secondary flow path to regulate said secondary flow though said passage, said ramp adjacent to a plenum to facilitate a pressure balance of said ramp, said plenum downstream of said ramp;
- and
- wherein said primary duct is generally circular in cross-section at an upstream segment and transitions into said planar primary nozzle at a downstream segment.
2 more elements
A gas turbine engine comprising:
- an engine duct structure and an inner structure which at least partially define a secondary flow path for a secondary flow and a primary flow path for a primary flow, said secondary flow path defined at least partially around a perimeter of said primary flow path;
- a secondary flow duct with a generally planar secondary nozzle to communicate said secondary flow therethrough;
- a primary flow duct with a generally planar primary nozzle to communicate said primary flow therethrough, said generally planar primary nozzle adjacent said generally planar secondary nozzle;
- a ramp axially slidable relative to a passage in communication with said secondary flow path to regulate said secondary flow though said passage, said ramp adjacent to a plenum to facilitate a pressure balance of said ramp, said plenum downstream of said ramp;
- and
- wherein said primary duct is generally circular in cross-section at an upstream segment and transitions into said planar primary nozzle at a downstream segment.
3 more elements
A jet area regulator system for a gas turbine engine comprising:
- a ramp adjacent a secondary flow path for a secondary flow and a primary flow path for a primary flow, said ramp axially slidable to regulate said secondary flow, said ramp adjacent to a plenum to facilitate a pressure balance of said ramp, said plenum downstream of said ramp;
- and
- wherein said secondary flow is selectively sourced only from a fan section of the gas turbine engine and said primary flow includes at least a combustion core gas exhaust flow sourced from a turbine section of the gas turbine engine and a flow from said fan section.
Dependencies are inferred from the claim text.