Pitch changing mechanism for fan blades

Details Pitch changing mechanism for fan blades Pitch changing mechanism for fan blades

1987-02-24

1988-01-12

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Power or manual actuator on non-rotatable part

416168R, 415129, B64C 1138

Patent

active

047188235

ABSTRACT:
A non-rotating actuating system for pitch control of a fan in a bypass turbine engine in which the actuating sleeve, that rotates with a fan and is moved axially to change to the pitch ofthe fan blade, is supported by a part of the fixed structure thereby to minimize loading of the disc supporting structure.

REFERENCES:
patent: 2440046 (1948-04-01), Hautier
patent: 3056457 (1962-10-01), MacFarland
patent: 3487880 (1967-04-01), Davies et al.
patent: 3687569 (1972-08-01), Lompas
patent: 3869221 (1975-03-01), Wilder
patent: 3873235 (1975-03-01), Mendelson
patent: 3873236 (1975-03-01), Gall
patent: 3922852 (1975-12-01), Drabek
patent: 3924404 (1975-12-01), Pollert
patent: 4090812 (1978-05-01), Moran
patent: 4534705 (1985-08-01), Selestam
patent: 4657484 (1987-04-01), Wakeman et al.

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