Quad mode fan pitch actuation system for a gas turbine engine

Details Quad mode fan pitch actuation system for a gas turbine engine Quad mode fan pitch actuation system for a gas turbine engine

1991-05-13

1994-02-01

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Method of operation

416144, 416152, 416155, 416162, 416165, 74 8915, 74841, 475 5, 475150, B64C 1144

Patent

active

052827194

ABSTRACT:
Blade pitch is changed by an actuator that is responsive to the relative rotation of two input members. Blade pitch is not changed when the members are rotated at the same speed. However, blade pitch is changed in one direction when a braking torque is applied to one member, and blade pitch is changed in an opposite direction when a braking torque is applied to the other member.

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