HIGH-CYCLE, SHORT RANGE-OF-MOTION LINKAGE APPARATUS FOR GAS TURBINE ENGINE APPLICATIONS
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United States of America Patent
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Sep 8, 2016
app pub date -
Jan 27, 2016
filing date -
Dec 6, 2011
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Abstract
A high-cycle, short range-of-motion linkage apparatus for actuation of a turbofan engine component includes a pivot member having a head portion and a stem, and an actuator moveable between a first and second position. An actuator first end defines a receiving portion into which the stem is removably secured. An actuator second end defines a coupling member pivotally connected to a turbofan engine structural member and moveable between a first and second position corresponding to the actuator first and second positions. A spherical plain bearing pivotally connects the pivot member head to the turbofan engine component and includes an inner member, an outer member swaged around the inner member and disposed between the inner member and the head of the pivot member, and a liner disposed between the inner and outer members. The outer member defines a range of motion in relation to the inner member up to 90°.
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