Rolls-royce Corporation

Paul S McCabe

Benjamin J Keeler

Michael J Sheath

A fuel-oil heat exchange system for an engine having a first fuel line for delivery of fuel to an engine combustor and a second fuel line for delivery of fuel to ancillary engine equipment. The heat exchange system has a first heat exchanger for transfer of heat from an engine oil system to the first fuel line and a second heat exchanger for transfer of heat from the engine oil system to the second fuel line. A control valve is provided for selective control of the oil flow from the engine oil system to the first and second heat exchangers.

Engine fuel-oil heat exchange system

A load absorption arrangementfor absorbing loads in a variable stator vane positioning system of a gas turbine engine includes a valvewhich has a first operating condition to enable the load absorption arrangementto transmit load, and a second operating condition, which is operable above a predetermined load, in which the valvecan release to enable the load absorption arrangementto absorb the load thereon. The arrangementis particularly suitable for absorbing shock loads which may arise under engine surge.

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Tamworth, United Kingdom

Paul S McCabe