ROTARY WING AIRCRAFT PITCH BEAM ATTACHMENT WITH ANTI-ROTATION PLATE DESIGN

摘要

A retaining assembly for a tail rotor system is provided including a washer having a plurality of splines. The washer is configured to couple to an adjacent pitch change shaft. A retaining nut includes a self-locking feature and a flange arranged at a first end. The retaining nut is configured to threadably couple to the pitch change shaft such that the flange is in contact with the washer. The flange includes a plurality of first holes configured to at least partially align between the splines of the washer. A lock plate includes a body and a plurality of tabs extending generally perpendicularly from the body. The lock plate is slidably positioned about the pitch change shaft adjacent the flange. The lock plate is operably coupled to the retaining nut and the washer to limit rotational movement thereof relative to the pitch change shaft.

主权项

1. A retaining assembly for a tail rotor system, comprising:
a washer including a plurality of splines, the washer being configured to couple to a pitch change shaft; a retaining nut including a self-locking feature and a flange arranged at a first end, the retaining nut being configured to threadably couple to the pitch change shaft such that the flange is in contact with the washer, wherein the flange includes a plurality of first holes configured to at least partially align between the splines of the washer; and a lock plate including a body and a plurality of tabs extending generally perpendicularly from the body, the lock plate being slidably positioned about the pitch change shaft adjacent the flange, wherein the lock plate is operably coupled to the retaining nut and the washer to limit rotational movement thereof about the pitch change shaft.