Mounting arrangement for variable diameter rotor blade assemblies

摘要

A mounting arrangement (100) for a Variable Diameter Rotor blade assembly (16) having an outer blade segment telescopically mounting to a torque tube member (24), and connecting means (70) for transferring centrifugal loads of the outer blade segment (22) to a rotor hub assembly (18). The outer blade segment (22) includes a spar member (30) having a longitudinal axis (26) and defining an internal channel (62) for accepting the torque tube member (24) and the connecting means (70). The mounting arrangement (100) couples the connecting means (70) to the spar member (30) and includes a restraint surface (86) formed within the spar member (30) and a restraint assembly (68) disposed in combination therewith. The restraint surface (86) is disposed inboard of the tip end (90) of the spar member (30) and in a plane oriented transversely of the longitudinal axis (26). The restraint assembly (68) is disposed internally of the spar member (30) and includes a bearing block (102) mounting to the connecting means (70) and having upper and lower transverse slots (104a, 104b) formed therein. The restraint assembly (68) further comprises a load transfer member (106) disposed in combination with the transverse slots (104a, 104b) and the restraint surface (86) for transferring centrifugal loads to the connecting means (70). A sidewall aperture (134) is formed in the spar member (30) and proximal to the restraint surface (86) to facilitate installation of the load transfer member (106) in the transverse slots (104a, 104b).