Pinned airfoil propeller assembly

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment

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Details

416131, 416134R, 416140, F03B 314

Patent

active

051023008

ABSTRACT:
A propeller or fan blade is rotatably mounted to a blade retention pitch member by a pin radially outside of a spinner. By mounting the propeller blade for rotation about the axis of the pin, the blade response to a vibratory excitation in a first mode of vibration is modified such that the twisting motion of the blade is minimized. High speed stability of the blade is enhanced thereby. Moreover a damaged blade may be easily replaced.

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Paper No. 66-WA/GT-4, Authors: J. I. Goatham and G. T. Smailes; "Some Vibration Characteristics of Pin-Fixed Compressor Blades", pp. 1 through 11. contributed by the Gas Turbine Division--presented at Winter Annual Meeting, New York, NY, 11/27-12/01/66.

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