Performance Characteristics of Brush Seals for Limited-Life Engines

Author:

Chupp R. E.1,Dowler C. A.2

Affiliation:

1. Teledyne CAE, Toledo, OH 43612

2. WL/POTX, Wright Patterson Air Force Base, OH 45433

Abstract

Brush seals are potential replacements for air-to-air labyrinth seals in gas turbine engines. An investigation has been conducted to determine the performance characteristics of brush seals for application in limited-life gas turbine engines. An elevated temperature, rotating test rig was designed and built to test labyrinth and brush seals in simulated subsonic and supersonic engine conditions. Results from initial tests for subsonic applications demonstrated that brush seals exhibit appreciably lower leakage compared to labyrinth seals, and thus offer significant engine performance improvements. Performance results have been obtained showing the effect of various brush seal parameters, including: initial interference, backplate gap, and multiple brush seals in series.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

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3. Wear and Leakage Behaviors of Brush Seal Considering Eccentricity and Radial Deformation;Energies;2023-04-12

4. Brush seal design and secondary air system modification of a heavy-duty gas turbine to improve the output power;Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy;2022-05-05

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