MULTIPLE ROTOR DISK ASSEMBLY

摘要

A rotor assembly (34) for supporting rotor blades (30) includes a plurality of axially adjoining discrete disks (36) each having a rim (40), web (42), and hub (44). The rims (40) include axial dovetail grooves (46) for collectively supporting a respective blade dovetail (32) therein. Each of the disks (36) includes at least one axially extending annular arm (50) joined integrally with the disk and fixedly joined to an adjacent one of the arms (50). The disks (36) are fixedly joined together solely by the blade dovetails (32) in the rim dovetail grooves (32) and by the arms (50) so that upon a crack (52) failure of one of the disks, centrifugal load from the failed disk (36) is transferred to an adjacent disk.