Rolls-royce Corporation

Rolls-royce North American Technologies Inc.

James Sellhorn

Michael R Whitten

Brandon R Snyder

Bradford John Riehle

Ted Joseph Freeman

Aaron D Sippel

John Alan Weaver

Tony Lambert

Tony Alan Lambert

A wheel assembly for a gas turbine engine includes a disk, an annular coverplate, and an anti-rotation feature. The disk is adapted to receive blades and rotate about an axis during use of the gas turbine engine. The annular coverplate is coupled with the disk and adapted to block axial movement of the blades. The anti-rotation feature is coupled with the disk and the annular coverplate to resist rotation of the annular coverplate relative to the disk.

Turbine wheel assembly with retainer rings for ceramic matrix composite material blades

A retaining collar is disclosed for a bayonet mount comprising a rotor disc having a male mounting member defining a pair of apertures and an auxiliary annular wheel defining a plurality of mounting slots. The retaining collar comprises a ring-shaped body and a pair of retention pins. The ring-shaped body has a pair of circumferential end portions separated by a circumferential gap, and an arcuate radial outer surface extending circumferentially between the end portions. The body is dimensioned so that the radial outer surface frictionally engages a radial inner surface of a cylindrical male mounting member in the bayonet mount. The pair of retention pins each extend radially outward from one of the circumferential end portions. Each of the retention pins are dimensioned to extend radially outward from the body through one of said apertures and one of said mounting slots.

Turbine rotor assembly having a retaining collar for a bayonet mount

A cover plate for maintaining axial alignment between a blade assembly and a rotor disk and transferring centrifugal loading directly to the rotor disk. The cover plate comprises a plate key extending axially from an elongate member, the plate key configured to engage a keyway of the rotor disk assembly and/or a notch of the blade key.

Rotor assembly cover plate

Various embodiments of the present application provide one or more of: (1) auxiliary wheel that (a) enables accurate speed detection of a turbine disc and/or (b) presents a machining surface for balance correction; and/or (2) techniques for mounting an auxiliary wheel to a rotor, such as a turbine disc.

Turbine assembly with auxiliary wheel

A labyrinth seal system comprises a knife element and a stator element, the knife element having a plurality of teeth radially extending from a base and the stator element having a radially inner surface configured to interact with the plurality of teeth to create a seal. The knife element is axially constrained by and rotationally coupled to a turbine component, but has a degree of freedom in the radial direction with respect to that component.

Floating interstage seal assembly

A turbine airfoil arrangement for a gas turbine engine includes an airfoil having an inlet and an exit, the inlet configured to receive a cooling gas flow operable to cool at least part of an other airfoil; and a passage disposed in the airfoil and fluidly coupled to the inlet and the exit, the exit being configured to pass at least some of the cooling gas flow to the other airfoil.

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Indianapolis, IN, United States of America

James Sellhorn