Rolls-royce Corporation

Steven P Jones

Frederic Witham

Jonathan Mark Gregory

Timothy Minchin

Stephen Charles Harding

David Joel Clarke

David Steele

Pierre Hilt

A fuel spray nozzle comprises a fuel passage () having at least one inlet and at least one outlet. The outlet is configured for accelerating fuel exiting the fuel passage into a jet. An air swirler () is arranged outboard of the fuel passage and converges to a single outlet chamber () adjacent the fuel passage outlet(s). The air swirler () can be nominally concentrically arranged but have some freedom to move axially or radially or change its angular position. The fuel passage outlets may be arranged symmetrically in an annular configuration. An air passage may be arranged axially within the annular array of fuel passage outlets.

Fuel spray nozzle for a gas turbine engine

An annular air swirler configured to receive a fuel injector in a central bore. The swirler has one or more annular channels, defined by radially facing channel walls and having an inlet for receiving compressed air and an axially distal outlet. The channel walls converge inwardly towards the outlet and swirl vanes extend between opposing faces of the walls. The swirler turns incoming air to create a vortex at the channel outlet. An annular cooling apparatus associated with the air swirler is arranged axially adjacently downstream of the channel outlet(s), and includes a skirt portion radially spaced from a converging portion of the outermost channel wall defining a converging portion of a bowed coolant channel. A radially outwardly extending wall connects with the outermost channel wall and, with a face of the skirt portion, defines a radially outwardly extending portion of the bowed coolant channel adapted for increased heat exchange.

Cooling apparatus for a fuel injector

A fuel injector comprising: a prefilmer; a plurality of discrete fuel sources each arranged to supply fuel to a surface of the prefilmer; wherein the prefilmer comprises circumferential dispersion structure which, in use, spreads the fuel in a circumferential direction as it passes from an impingement point on the surface of the prefilmer to a downstream edge of the prefilmer.

Fuel injector

Growing community of inventors

Bristol, United Kingdom

Steven P Jones