Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Patent
1993-08-30
1994-11-29
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
416248, F01D 532
Patent
active
053684443
ABSTRACT:
Pairs of cylindrical rolling pin elements are disposed in mating nests between blade dovetails and disk posts in a gas turbine engine rotor assembly. During periods of change of disk rim elastic strain caused by changes in rotor speed, relative movement between the blade dovetails and disk posts is afforded through rolling contact of the pin elements. High pressure load slippage between conventional pressure face portions of dovetails and posts and resultant fretting wear damage is obviated. Multiple pairs of pins and nests and pins of other than cylindrical geometry are also contemplated.
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Colwell, A. T., and Cummings, R. E., "10 Ways To Attach Blades", Feb. 1948, pp. 32-35.
Fretting Wear, B. G. Brady; SE Technical Paper Series #901786; Aerospace Technology Conference and Exposition, Long Beach, Calif., Oct. 1-4, 1990; pp. 1-17.
Friction and Lubrication, F. P. Bowden and D. Tabor; Methuen & Co. Ltd., 1967 pp. 84-91.
General Electric Company
Herkamp Nathan D.
Larson James A.
Look Edward K.
Squillaro Jerome C.
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