Abstract: A fuel control system is provided for a turbine engine for delivering fuel from a fuel source and to the turbine engine combustion chamber to maximize fuel economy engine efficiency. The fuel control system comprises a fuel pump having its outlet connected to the inlet of a fuel control assembly while the outlet from the fuel control assembly is connected to the combustion chamber. A variable orifice within the fuel control assembly is responsive both to the differential pressure between the compressor inlet and outlet as well as the position of the engine throttle to vary the flow rate through the fuel control assembly and to the combustion chamber.

Abstract: A gas turbine combustion chamber in which the primary air inlets in a peripheral wall of the combustion chamber are defined by open-ended tubes extending inwardly from the peripheral wall by a substantial distance into the combustion chamber and having their inner, that is their outlet, ends facing in an upstream direction within the combustion chamber, whereby each of the tubes will introduce a stream of air with at least a component of motion in the upstream direction along or parallel with the longitudinal axis of the combustion chamber, thereby to effect recirculation of fuel, air and combustion gases within the combustion chamber. Similar air inlet tubes may be provided for introducing secondary and tertiary air into the combustion chamber.

Abstract: A fuel system particularly for a gas turbine engine in which a tubular shaft rotatable during operation of the engine at engine speed or at a speed proportional thereto has a fuel inlet through which liquid fuel is introduced into the interior of the shaft, the peripheral wall of the shaft having at least one port therein communicating externally of the shaft with a combustion region of the engine and comprising a first resiliently-supported valve member mounted on the outside of the peripheral wall of the shaft in registration with the port to move away from the shaft centrifugally as the speed of rotation of the shaft increases, thereby to open the port and thus to allow fuel to flow through the port to the combustion region.