Rolls-royce Controls and Data Services Limited

Rolls-royce Corporation

Paul R Thornton

Yong Qin

Arthur Laurence Rowe

Michael Whiteman

Mark N Binnington

Mark Je Bellis

Colin J Woodward

Luca Romeo

Mark Bellis

A rotor assembly () comprising a rotor () having an annular array of rotor blades (), the rotor mounted to a shaft (). A phonic wheel () coupled to the shaft. A speed sensor () axially aligned with the phonic wheel and configured to measure voltage (V), amplitude of the voltage being proportional to clearance () between the sensor and phonic wheel. A processor () configured to: receive the voltage measurement; derive shaft speed (&#x3c9;) from the voltage measurement; identify modulation of the voltage amplitude at a frequency which is an integer multiple of the shaft speed; compare voltage amplitude to a threshold; and output a rotor damage signal based on the comparison.

Rotor blade damage

Combustion chamber includes a primary stage fuel burner to supply fuel into a primary combustion zone and secondary stage fuel burner supplies fuel into a secondary combustion zone. A sensor is positioned downstream from combustion chamber measuring concentration of one or more compounds. The sensor sends measurements of the concentration of compounds to a processor. The processor compares the measured concentration of the compound with a first threshold value and a second threshold value. The processor supplies more fuel to the primary stage fuel burner if the measured concentration is higher than the first threshold value, supplies more fuel to the secondary stage fuel burner if the measured concentration is higher than the second threshold value, maintaining fuel supply to the primary and secondary stage fuel burners if the measured concentration is lower than the first threshold value and lower than the second threshold value.

Apparatus and a method of controlling the supply of fuel to a combustion chamber

An apparatus for measuring the circumferential distribution of temperature in a fluid, comprising a plurality of sensor ladders, each incorporating a plurality of temperature sensors, wherein a first one of the sensor ladders partially overlaps a second one of the sensor ladders, part of the first sensor ladder not overlapping the second sensor ladder.

Apparatus for fluid temperature measurement

A fuel system comprises a fuel actuation arrangementoperable to split a metered flow of fuel into at least a first stream and a second stream, a control unitcontrolling the operation of the fuel actuation arrangement, and wherein the control unitcontrols the operation of the fuel actuation arrangementin response to the output of a temperature sensorsensitive to a gas temperature downstream of the high pressure compressorof an associated engine and the output of a gas sensorsensitive to at least one parameter of the composition of a gas downstream of a combustorof the engine.

Growing community of inventors

Derby, United Kingdom

Paul R Thornton