A fuel metering unit 10 for an aircraft. The unit 10 having an inlet leg 12 within which fuel flows, which leg 12 splits into controlling legs 18, 20 which rejoin downstream to form an outlet leg 30. Shut off valves 28, 30 are provided respectively in the ...

A method of monitoring the health of a positive displacement hydraulic pump characterised by comprising the steps of: establishing a flow path (24, 21a, 26, 39, 38, 17a, 33, 41, 42, 36) having a known flow number between a high pressure outlet line of the ...

A fuel system (10) for an engine (12) includes a water supply source (14) for providing water and a fuel supply source (12) for providing fuel. A centrifugal pump (16) is fluidly connected to the water and fuel supply sources (12,14), respectively at water...

A fuel system for a gas turbine engine comprising a regenerative pump (11) having an inlet (13), an outlet (14), and a flow channel (17) extending between the inlet and the outlet along which fuel is transferred in use by rotation of an impeller (15) of th...

The fuel supply system has at least one tank, a low pressure pump (2) connected to the tank via a first fuel line (1), a second fuel line (3) that connects the low pressure pump to a high pressure pump (4) and a fuel regulator unit (5). A fuel return line ...

A diffusion flame nozzle gas tip (20) is provided to convert a dual fuel nozzle to a gas only nozzle. The nozzle tip (20) diverts compressor discharge air from the passage (26) feeding the diffusion nozzle air swirl vanes to a region (28) vacated by remova...