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Some preliminary results of brush seal/rotor interference effects on leakage at zero and low rpm using a tapered-plug rotorSome preliminary brush seal leakage results for ambient-temperature air are presented. Data for four nominal brush-rotor radial clearances of -0.09, -0.048, -0.008, and 0.035 mm were taken by using a tapered plug rotor at 0 and 400 rpm with rotor runout of 0.127 mm peak to peak. The brush seal nominal bore diameter was 38 mm with 0.05-mm bristles at 200 bristles/mm of circumference and a 0.61-mm fence height. Leakages were greater than predicted, but agreement was reasonable. Leakage rates were not significantly altered by hysteresis or inlet flow variations. Visualization studies showed that the bristles followed the 400-rpm excitation, and loading studies indicated that bristles slid relative to one another.
Document ID
19910061197
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hendricks, R. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Proctor, M. P.
(NASA Lewis Research Center Cleveland, OH, United States)
Schlumberger, J. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Braun, M. J.
(Akron, University OH, United States)
Mullen, R. L.
(Case Western Reserve University Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1991
Subject Category
Mechanical Engineering
Report/Patent Number
AIAA PAPER 91-3390
Accession Number
91A45820
Distribution Limits
Public
Copyright
Other

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