Joining means for rotor discs

Abstract

In an assembly of spaced rotor discs, mounted to rotate about a common axis, one or more discs are provided that are removably joined to the other discs but so joined, away from potential fatigue points in the disc webs. Thus a pair of discs have a spacer arm extending therebetween in contact therewith. Further, each disc of such pair, has a flange that extends between the discs toward the flange of the other disc, which flanges (and thus the discs) are removably bolted together at a junction removed from the disc webs for greater disc durability and lower replacement costs thereof. The so joined flanges and spacer arm (which is held in a piloted joint under compressive pre-load) define an annular cavity around a pair of the discs and thus redundant structural support therebetween.

Dependencies are inferred from the claim text.