Rolls-royce Corporation

Roger Alexander Sutherland

Jonathan E Holt

Robert Goulds

Ralph W Hill

Christopher D Jack

Colin Richard Barnfather

An actuation systemcomprises a fluid supplythat is fluidly connected to a position control actuator. The output of the position control actuator is determined by the fluid supply. The fluid supply is controlled by a piezoelectric actuator

Actuator control

A pulsed pressure, heat recovery system includes a pressure vessel for holding a vaporisable first fluid. The vessel contains a heat exchanger, and provides communication to the heat exchanger for flow of a heated second fluid. The heat exchanger enables heat transfer from the second fluid to vaporise the first fluid. The system also includes a flow loop for the first fluid extending from an outlet of the vessel to an inlet to the vessel, having in series: a first non-return valve, a turbine and a second non-return valve. The first non-return valve allows the vaporised first fluid to flow from the vessel to the turbine when the pressure of the vaporised first fluid in the vessel exceeds a predetermined limit. The turbine extracts energy from expansion of the vaporised first fluid. The second non-return valve prevents flow reversal around flow loop between the turbine and the inlet.

Heat recovery system

A centrifugal debris separator for removing debris from a gas turbine engine fuel system comprises a debris separator inlet, a debris separator outlet and a separating chamber with a centerline extending in an axial direction and defined by an outer wall formed around the centerline. The separating chamber comprises a separating chamber inlet for receiving fluid, a first separator outlet to the separating chamber, a second separator outlet to the separating chamber provided to the outer wall of the separating chamber and a third separator outlet to the separating chamber defined by a third separator outlet wall formed around the centerline of the separating chamber. The debris separator inlet is fluidly connected to the separating chamber inlet. The debris separator outlet is fluidly connected to the first separator outlet.

Debris separator

A clearance control apparatus for controlling the clearance between a rotary assembly () and a casing () surrounding the rotary assembly () is disclosed. The clearance control apparatus comprises a temperature measuring device () to measure the temperature of a radially outer portion of the rotary assembly and a cooling arrangement () to cool the casing (). A control system () is associated with the temperature measuring device () and the cooling arrangement () to control the extent of cooling of the casing (). The extent of cooling is dependent upon the temperature of the aforesaid portion.

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Derby, United Kingdom

Roger Alexander Sutherland