Performance Characteristics of Brush Seals for Limited-Life Engines PUBLIC ACCESS

[+] Author Affiliations
Raymond E. Chupp

Teledyne CAE, Toledo, OH

Constance A. Dowler

WL/POTX, Wright Patterson Air Force Base, OH

Paper No. 91-GT-281, pp. V001T01A089; 8 pages
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7898-9
  • Copyright © 1991 by ASME


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 © 1991 by ASME
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