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US 12,742,416 B1Granted
Nose cone with debris deflection flow
AssigneeRtx Corporation
InventorsIoannis Alvanos, David A. Welch
Life of this patent
Estimating the term…
Abstract
A nose cone for debris deflection comprising a deflector formed in the nose cone, the deflector configured to create a deflection air stream; the deflection air stream being configured to manipulate a fan inlet air flow such that any debris entrained in the fan inlet air flow has a trajectory line directed away from a core flow of a gas turbine engine and toward a bypass flow of the gas turbine engine.
Claims16
A nose cone for debris deflection comprising:
- a deflector formed in the nose cone, the deflector configured to create a deflection air stream;
- the deflection air stream being configured to manipulate a fan inlet air flow such that any debris entrained in the fan inlet air flow has a trajectory line directed away from a core flow of a gas turbine engine and toward a bypass flow of the gas turbine engine, wherein the deflector comprises an inlet formed in the nose cone, the inlet configured to receive a portion of the fan inlet airflow into a deflector flow passage;
- the deflector flow passage fluidly coupled with an outlet, the outlet configured to direct the deflection air stream into the fan inlet air flow;
- wherein the deflector flow passage comprises a converging cross sectional flow area which changes from a first flow area proximate the inlet to a second flow area proximate the outlet;
- the first flow area being larger than the second flow area, wherein the deflector is configured to accelerate the deflection air stream passing through the deflector flow passage and exiting the outlet.
2 more elements
A gas turbine engine having a nose cone for debris deflection comprising:
- a fan section including a fan blade upstream from a bypass duct and a core separated by a splitter;
- and
- a deflector formed in the nose cone, the deflector comprising an inlet fluidly coupled with a deflector flow passage, the deflector flow passage fluidly coupled with an outlet;
- the deflector being located upstream of the fan blade and arrayed circumferentially around the nose cone relative a centerline axis of the nose cone, wherein the deflector flow passage comprises a converging cross sectional flow area which changes from a first flow area proximate the inlet to a second flow area proximate the outlet;
- the first flow area being larger than the second flow area, wherein the deflector is configured to accelerate the deflection air stream passing through the deflector flow passage and exiting the outlet.
2 more elements
A process for forming a nose cone for debris deflection comprising:
- a fan section including a fan blade upstream from a bypass duct and a core separated by a splitter;
- forming a deflector in the nose cone, the deflector comprising an inlet;
- fluidly coupling the inlet with a deflector flow passage;
- fluidly coupling the deflector flow passage with an outlet;
- locating the deflector upstream of the fan blade;
- arraying the deflector circumferentially around the nose cone relative a centerline axis of the nose cone;
- forming the deflector flow passage with a converging cross sectional flow area which changes from a first flow area proximate the inlet to a second flow area proximate the outlet;
- forming the first flow area larger than the second flow area;
- and
- configuring the deflector to accelerate the deflection air stream passing through the deflector flow passage and exiting the outlet.
7 more elements
Dependencies are inferred from the claim text.