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Braking System for Wind TurbinesOperating turbine stopped smoothly by fail-safe mechanism. Windturbine braking systems improved by system consisting of two large steel-alloy disks mounted on high-speed shaft of gear box, and brakepad assembly mounted on bracket fastened to top of gear box. Lever arms (with brake pads) actuated by spring-powered, pneumatic cylinders connected to these arms. Springs give specific spring-loading constant and exert predetermined load onto brake pads through lever arms. Pneumatic cylinders actuated positively to compress springs and disengage brake pads from disks. During power failure, brakes automatically lock onto disks, producing highly reliable, fail-safe stops. System doubles as stopping brake and "parking" brake.
Document ID
19870000093
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Krysiak, J. E.
Webb, F. E.
Date Acquired
August 13, 2013
Publication Date
February 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 2
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
LEW-14337
Accession Number
87B10093
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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