Rolls-Royce Corporation

Virginia Polytechnic Institute and State University

Turbine Surface Technologies Limited

Roy Peter McIntyre

Daniel Kent Vetters

Jeffrey Allen Walston

Taylor K Blair

Gary R Pickrell

Michael Cybulsky

Raymond John Sinatra

Romesh Batra

Mark Hudson

In some examples, a system includes a blade including a blade tip and a blade track or blade shroud segment including a substrate and an abradable coating layer on the substrate. The substrate defines a leading edge and a trailing edge. The abradable coating layer includes a first tapered portion that substantially continuously tapers from a center portion of the substrate toward the leading edge of the substrate, a second tapered portion that substantially continuously tapers from the center portion of the substrate toward the trailing edge of the substrate, and a blade rub portion that extends between the first tapered portion and the second tapered portion. The abradable coating extends from the leading edge to the trailing edge, and the blade tip is configured to contact at least a portion of the blade rub portion upon rotation of the blade.

Tapered abradable coatings

An example system includes at least one acoustic sensor configured to generate at least one acoustic data signal indicative of an acoustic signal generated by a thermal spray system comprising a flowstream, a computing device, and an acoustic data signal processing module operable by the computing device to determine an ignition attribute of the thermal spray system by analyzing at least a pre-ignition window of the acoustic data signal received by the computing device.

Diagnosis of thermal spray gun ignition

Growing community of inventors

Derby, United Kingdom

Roy Peter McIntyre