STATOR VANE ACTUATING MECHANISM

摘要

In a vane actuation system including several actuated stages, unison rings for pairs of stages are actuated in opposite directions. The bell-cranks for actuating the unison rings are all connected to a common carrier wherein the oppositely directed loads substantially balance out so that only the difference is transmitted into the engine casing. The bell-crank actuator is also mounted on the common carrier and therefore none of its loads are transmitted into the engine casing. The common carrier is substantially isolated from the casing by support members which permit the casing to grow and deflect without inducing large stresses in the common carrier.