Rolls-royce Corporation

Rolls-royce North American Technologies Inc.

Rolls-royce High Temperature Composites Inc.

Michael Jacquinto

Daniel Kent Vetters

Joseph Gordon Doyle

Wesley Thibault

Aaron D Sippel

David John Thomas

Jun Shi

Simon James Jones

Roderick M Townes

Robert J Shinavski

Andrew J Eifert

Steven Hillier

Stephen Isaiah Harris

Peter Broadhead

Wayne S Steffier

Todd Engel

Paul Antony Davis

David Thomas

A method of making a fiber preform for ceramic matrix composite (CMC) fabrication that utilizes a fugitive binder and a machining step is described. The method includes, according to one embodiment, laying up a plurality of plies to form a stack, where each ply comprises an arrangement of fibers. The stack is infiltrated with a polymer at an elevated temperature to form an infiltrated stack that is cooled to form a rigid preform. The rigid fiber preform is machined to have a predetermined shape, such that a machined fiber preform is formed. A composite assembly including the machined fiber preform is formed and then the composite assembly is heated at a sufficient temperature to pyrolyze the polymer. Thus, a porous preform of a predetermined geometry is formed for further processing into a CMC.

Method of making a fiber preform for ceramic matrix composite (CMC) fabrication

A blade track assembly is disclosed. The blade track assembly comprises a plurality of ceramic matrix composite blade track segments arranged circumferentially adjacent to one another around a central axis. Each of the blade track segments includes an arcuate runner extending in a circumferential direction around a portion of the central axis and is coupled to circumferentially adjacent blade track segments.

Full hoop blade track with flanged segments

A turbine shroud assembly or blade track assembly adapted to extend around a turbine wheel assembly is disclosed. The turbine shroud assembly includes a carrier and a blade track coupled to the carrier. The blade track is movable between a radially-inward position having a first inner diameter and a radially-outward position having a second inner diameter larger than the first inner diameter.

Blade track assembly with turbine tip clearance control

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Long Beach, CA, United States of America

Michael Jacquinto