Patent ID: 8500394
Filing Date: 2013-08-06
Classification: F01D,F04D

Abstract:
1. An inner diameter shroud for receiving an inner diameter base portion of a rotatable vane in a gas turbine engine comprising: a single piece channel having a leading edge wall, an inner diameter wall, a trailing edge wall, a radial outer surface, and at least two axial projections; a core movable in the channel in a circumferential direction and configured to rotatably retain the inner diameter base portion of the rotatable vane, the core separated into two axially abutting segments and being engaged by the axial projections so that the radial movement of the core is prevented; the core having a radial outer surface that is generally aligned with the radial outer surface of the channel, wherein together the radial outer surface of the core and the radial outer surface of the channel define an inner diameter flow path annulus of the gas turbine engine; and a dowel pin interconnectably aligning the two axially abutting segments of the core; wherein at least one of the axial projections comprises an interior railhead that retains the core in the radial direction and is not exposed to an inner diameter flow path annulus.