Systems and methods for manufacturing film cooling hole diffuser portion
AssigneeRaytheon Company
InventorsScott D. Lewis, Stephen Lynch, Shane Haydt
Life of this patent
Estimating the term…
Abstract
A gas path component for a gas turbine engine includes a film cooling hole disposed in the gas path component. The film cooling hole includes a metering section, a diffuser, and a tapered surface extending between the metering section and the diffuser. The tapered surface is oriented between twenty degrees and seventy degrees with respect to a centerline axis of the metering section. The tapered surface is oriented at an obtuse angle with respect to an immediately adjacent surface of the diffuser, the obtuse angle is open towards the centerline axis. The tapered surface is configured to mitigate flow separation in the diffuser.
Claims19
A gas path component for a gas turbine engine, comprising:
- a film cooling hole disposed in the gas path component, the film cooling hole comprising:
- a metering section;
- a diffuser;
- and
- a tapered surface extending between the metering section and the diffuser;
- wherein the tapered surface is configured to mitigate flow separation in the diffuser,
- the tapered surface is oriented between twenty degrees and seventy degrees with respect to a centerline axis of the metering section, and
- the tapered surface is oriented at an obtuse angle with respect to an immediately adjacent surface of the diffuser, the obtuse angle is open towards the centerline axis.
An electrode for electrical discharge machining a film cooling hole in a gas path component for a gas turbine engine, comprising:
- a diffuser portion;
- and
- a tapered portion defining a tip of the electrode;
- wherein the tapered portion is configured to form a tapered surface within the film cooling hole, the tapered surface extending between a metering section of the film cooling hole and a diffuser of the film cooling hole;
- wherein the tapered surface is oriented between twenty degrees and seventy degrees with respect to a centerline axis of the metering section;
- and
- the tapered surface is oriented at an obtuse angle with respect to an immediately adjacent surface of the diffuser, the obtuse angle is open towards the centerline axis.
Dependencies are inferred from the claim text.