Performance Characteristics of Brush Seals for Limited-Life Engines

[+] Author and Article Information
R. E. Chupp

Teledyne CAE, Toledo, OH 43612

C. A. Dowler

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

J. Eng. Gas Turbines Power 115(2), 390-396 (Apr 01, 1993) (7 pages) doi:10.1115/1.2906721 History: Received March 04, 1991; Online April 24, 2008


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.

Copyright © 1993 by The American Society of Mechanical Engineers
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