Mass Balancing of Hollow Fan Blades

[+] Author and Article Information
R. E. Kielb

NASA Lewis Research Center, Cleveland, OH 44135

J. Eng. Gas Turbines Power 108(4), 577-582 (Oct 01, 1986) (6 pages) doi:10.1115/1.3239950 History: Received February 11, 1986; Online October 15, 2009


This paper uses a typical section model to investigate analytically the effect of mass balancing as applied to hollow, supersonic fan blades. A procedure to determine the best configuration of an internal balancing mass to provide flutter alleviation is developed. This procedure is applied to a typical supersonic shroudless fan blade which is unstable both in the solid configuration and when it is hollow with no balancing mass. The addition of an optimized balancing mass is shown to stabilize the blade at the design condition.

Copyright © 1986 by ASME
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