18428254. GAS TURBINE EXHAUST NOZZLE NOISE ABATEMENT simplified abstract (GENERAL ELECTRIC COMPANY)
Contents
GAS TURBINE EXHAUST NOZZLE NOISE ABATEMENT
Organization Name
Inventor(s)
Kishore Ramakrishnan of Rexford NY (US)
Steven B. Morris of Mason OH (US)
Nikolai N. Pastouchenko of Latham NY (US)
Trevor Howard Wood of Clifton Park NY (US)
GAS TURBINE EXHAUST NOZZLE NOISE ABATEMENT - A simplified explanation of the abstract
This abstract first appeared for US patent application 18428254 titled 'GAS TURBINE EXHAUST NOZZLE NOISE ABATEMENT
The abstract describes an exhaust nozzle for a gas turbine engine, featuring a nozzle body with chevrons extending downstream from the downstream end.
- The exhaust nozzle includes a plurality of chevrons that are circumferentially spaced apart and extend downstream from the downstream end of the nozzle body.
- Each chevron consists of an inner wall, an outer wall, a root, and a tip, with distinct segments along the axial direction.
- At least one chevron includes a first segment, a second segment, and a third segment, each extending downstream from the root to the tip.
- The inner wall extends along all segments, with each segment being distinguishable from the others in terms of shape and size.
Potential Applications: - Gas turbine engines in aviation - Power generation systems - Industrial gas turbines
Problems Solved: - Improved exhaust flow efficiency - Noise reduction - Enhanced engine performance
Benefits: - Increased fuel efficiency - Reduced environmental impact - Enhanced engine durability
Commercial Applications: Title: Advanced Exhaust Nozzle Technology for Gas Turbine Engines This technology can be utilized in commercial aircraft, power plants, and industrial applications to improve engine performance and reduce noise levels.
Questions about Exhaust Nozzle Technology: 1. How does the design of the chevrons contribute to noise reduction in gas turbine engines?
- The unique shape and spacing of the chevrons help to disrupt and control exhaust flow, reducing noise levels.
2. What are the potential challenges in implementing this advanced exhaust nozzle technology in existing gas turbine engines?
- Adapting the new design to fit within the constraints of current engine configurations may pose challenges, requiring modifications to existing systems.
Original Abstract Submitted
An exhaust nozzle for a gas turbine engine. The exhaust nozzle comprises a nozzle body having an upstream end axially spaced from a downstream end with respect to an axial centerline of the nozzle body, and a plurality of chevrons circumferentially spaced apart and extending downstream from the downstream end. Each chevron includes an inner wall radially spaced from an outer wall, a root and a tip axially spaced from the root. At least one chevron of the plurality of chevrons includes a first segment extending axially downstream from the root, a second segment extending axially downstream from the first segment, and a third segment extending axially downstream from the second segment to the tip. The inner wall extends along the first segment, the second segment, and third the segment. The first segment is distinguishable from the second segment and the second segment is distinguishable from the third segment.
