17958549. CIRCUMFERENTIALLY VARYING FAN CASING TREATMENTS FOR REDUCING FAN NOISE EFFECTS simplified abstract (General Electric Company)

CIRCUMFERENTIALLY VARYING FAN CASING TREATMENTS FOR REDUCING FAN NOISE EFFECTS

Organization Name

General Electric Company

Inventor(s)

Trevor Howard Wood of Clifton Park NY (US)

Ramakrishna Venkata Mallina of Mason OH (US)

Giridhar Jothiprasad of Clifton Park NY (US)

Kishore Ramakrishnan of Rexford NY (US)

Thomas Malkus of Albany NY (US)

CIRCUMFERENTIALLY VARYING FAN CASING TREATMENTS FOR REDUCING FAN NOISE EFFECTS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17958549 titled 'CIRCUMFERENTIALLY VARYING FAN CASING TREATMENTS FOR REDUCING FAN NOISE EFFECTS

Simplified Explanation

The rotary component for a gas turbine engine described in the abstract includes rotor blades coupled to a rotating shaft and an outer casing with features on its interior surface to reduce operational noise by varying wake strengths associated with the rotor blades.

• The rotary component for a gas turbine engine includes rotor blades coupled to a rotating shaft and an outer casing with features on its interior surface.
• The features on the interior surface of the outer casing perturb design parameters to provide a circumferential variation in wake strengths associated with the rotor blades.
• This variation in wake strengths reduces operational noise of the gas turbine engine.

Potential Applications

The technology described in the patent application could be applied in gas turbine engines used in aircraft, power generation, and other industrial applications where noise reduction is important.

Problems Solved

This technology helps reduce operational noise in gas turbine engines, improving overall efficiency and environmental impact.

Benefits

The benefits of this technology include reduced operational noise, improved efficiency, and potentially longer lifespan of the gas turbine engine components.

Potential Commercial Applications

The technology could be commercialized by manufacturers of gas turbine engines for various industries, as well as companies specializing in noise reduction technologies.

Possible Prior Art

One possible prior art could be the use of different blade designs or materials to reduce noise in gas turbine engines. Another could be the use of sound insulation materials around the engine to dampen noise.

Unanswered Questions

How does the perturbation of design parameters affect the overall performance of the gas turbine engine?

The abstract mentions that the perturbation of design parameters reduces operational noise, but it does not specify if there are any trade-offs in terms of engine efficiency or other performance metrics.

Are there any limitations to the circumferential variation in wake strengths provided by the features on the outer casing?

While the abstract highlights the benefits of the circumferential variation in wake strengths, it does not address any potential limitations or drawbacks of this design approach.

Original Abstract Submitted

A rotary component for a gas turbine engine includes a plurality of rotor blades operably coupled to a rotating shaft extending along the central axis and an outer casing arranged exterior to the plurality of rotor blades in a radial direction of the gas turbine engine. The outer casing defines a gap between a blade tip of each of the plurality of rotor blades and the outer casing. The outer casing includes a plurality of features formed into an interior surface thereof. Each of the plurality of features includes one or more design parameters that are perturbed about a mean design parameter for stall performance so as to provide a circumferential variation in wake strengths associated with the plurality of rotor blades, thereby reducing operational noise of the gas turbine engine.