Patent ID: 9410440
Filing Date: 2016-08-09
CPC Classification: F01D,F05D,Y02T

Claim Text:
1. A rotor assembly comprising: a rotor disc, the rotor disc having a rim and a plurality of circumferentially spaced slots provided in the rim of the rotor disc; and a plurality of circumferentially-spaced, radially outwardly extending rotor blades, each of the plurality of rotor blades having a root, the root of each of the plurality of rotor blades being arranged in a corresponding one of the slots in the rim of the rotor disc, and each of the slots having a chocking device accommodated within a space between a radially outer surface of each of the slots and a radially inner surface of the root of a corresponding one of the plurality of the rotor blades, wherein each chocking device includes at least a first spring and a second spring, the first spring and the second spring each abutting a radially inward-facing surface of the root of the corresponding one of the plurality of rotor blades, the first spring and the second spring each being configured to apply a radially outward spring force to the radially inward-facing surface of the root, and wherein the first spring and the second spring are arranged transversely relative to a longitudinal axis of each of the slots, the first spring and the second spring being substantially aligned in a plane extending transverse to the longitudinal axis, the first spring and the second spring being nearer to a front end of each of the slots than to a rear end of each of the slots, the front end of each of the slots being towards an upstream end of the rotor assembly and the rear end of each of the slots being towards a downstream end of the rotor assembly.