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US 5,699,965 AGranted
Infrared suppressor for a gas turbine engine
AssigneeSikorsky Aircraft Corporation
InventorArmand F. Amelio
Life of this patent
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AssigneeSikorsky Aircraft Corporation
InventorArmand F. Amelio
Estimating the term…
An IR suppressor produces a thin "ribbon" exhaust plume using a tapered exhaust manifold which has a plurality of discrete exhaust nozzles that are longitudinally aligned with the exhaust manifold. Optionally, the nozzles extend within but are spaced apart from mixing ducts which are open to the ambient air at both ends. The mixing ducts mix ambient air with the exhaust plume. In another aspect of this invention, a single nozzle (which is longitudinally aligned with the manifold) is substituted for the plurality of discrete exhaust nozzles. In this aspect, the nozzle extends within but is spaced apart from a mixing duct which is open at both ends and has a curve sufficient to block a line of sight to the nozzle. A helicopter that has a rotatable IR suppressor so that the exhaust can be directed substantially parallel to the helicopter blades when the blades are not turning to protect them from exhaust heat is also disclosed.
In an infrared suppressor for the exhaust of a gas turbine engine, said suppressor comprising an elongated tapered exhaust manifold, said manifold having an inlet for receiving said exhaust and a plurality of spaced apart manifold nozzles in fluid communication with said manifold, said nozzles substantially aligned along the manifold for dispersing said exhaust, the improvement characterized by:
In an infrared suppressor for the exhaust of a gas turbine engine, said suppressor comprising an elongated tapered exhaust manifold, said manifold having an inlet for receiving said exhaust and a plurality of spaced apart manifold nozzles in fluid communication with said manifold, said nozzles substantially aligned along the manifold for dispersing said exhaust, the improvement characterized by each nozzle having an opening, each opening being elongated and longitudinally aligned with the manifold and each nozzle having a substantially unobstructed exhaust flowpath to the ambient air.
In an infrared suppressor for the exhaust of a gas turbine engine, said suppressor comprising an elongated tapered exhaust manifold, said manifold having an inlet for receiving said exhaust and at least one nozzle in fluid communication with said manifold for dispersing said exhaust, the improvement characterized by:
Dependencies are inferred from the claim text.