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Record Details

Record 63 of 8946
Braking System for Wind Turbines
Author and Affiliation:
Krysiak, J. E.
Webb, F. E.
Abstract: Operating 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.
Publication Date: Feb 01, 1987
Document ID:
19870000093
(Acquired Nov 04, 1995)
Accession Number: 87B10093
Subject Category: MACHINERY
Report/Patent Number: LEW-14337
Document Type: NASA Tech Brief
Publication Information: NASA Tech Briefs (ISSN 0145-319X); 11; 2; P. 71
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: BRAKES (FOR ARRESTING MOTION); TURBOGENERATORS; WIND TURBINES
Availability Source: National Technology Transfer Center (NTTC), Wheeling, WV
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