RESEARCH PAPERS: Gas Turbines: Structures and Dynamics

An Improved Epicyclic Gearbox for Reduced and Controllable Subsynchronous Vibrations in Gas Turbogenerator Applications

[+] Author and Article Information
A. K. Rakhit

Solar Turbines Incorporated, San Diego, CA

J. Eng. Gas Turbines Power 119(3), 640-646 (Jul 01, 1997) (7 pages) doi:10.1115/1.2817032 History: Received February 01, 1996; Online November 19, 2007


An improvement is made to the design of an epicyclic gearbox that limits the dynamic eccentricities of gearbox components. Gearboxes were manufactured to the new design and tested, showed reduced levels of subsynchronous vibrations at the turbine bearings. The in-situ balancing feature of the gearbox is also found to be very effective in reducing these vibrations further. The improved gearboxes not only assured the service life of the turbine bearings, but also increased the success rate of package testing the first time with substantial cost savings.

Copyright © 1997 by The American Society of Mechanical Engineers
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