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 on...

A fault tolerant electric drive system comprises an alternator (10), a motor controller (12) and an electric motor (14), wherein the alternator (10) and motor (14) each have a plurality of corresponding independent phase windings, the motor controller (12)...

A fuel system comprises a fuel actuation arrangement 28 operable to split a metered flow of fuel into at least a first stream and a second stream, a control unit 25 controlling the operation of the fuel actuation arrangement 28, and wherein the control uni...

A fuel system comprises a fuel pump (10) operable to deliver fuel through a supply line (14) to a pressure raising valve (18), the pressure raising valve (18) including a control chamber (32), the fuel pressure within the control chamber (32) controlling a...