Radially captured in situ balancing masses for aircraft powerplant

Abstract

A rotating structure for an aircraft powerplant includes a balancing device and a bladed rotor. The balancing device is configured to rotationally balance the rotating structure about a rotational axis. The balancing device includes a housing and a plurality of balancing masses. The housing includes a first sidewall, a second sidewall, an outer endwall, an annular channel and an annular slot. The outer endwall circumscribes the annular channel. The annular channel extends axially within the housing between the first sidewall and the second sidewall. The annular slot extends radially through the outer endwall to the annular channel. Each of the balancing masses includes a mass body and an engagement feature. The mass body is captured within the annular channel. The engagement feature is configured to be engaged by a tool from outside of the housing to adjust a circumferential position of the mass body about the rotational axis.