An oil system for a gas turbine engine and a method of supplying oil to the system. The oil system includes a main oil tank connected by oil lines with a supplementary oil storage tank, which has an actuator, and that are connected to one oil pump for supplying oil to the gas turbine engine. The supplementary oil storage tank is equal in size or larger than a steady state oil gulp of the system. The method includes supplying oil from a main oil tank through a pipe line using an oil pump, detecting the oil level in the oil system and determining if additional oil is required or requires removing using a sensor and an electronic controller, and transmitting a signal to an actuator to supply or remove oil to and from the pipe lines in the oil system from or into a supplementary oil storage tank.

An oil system for a gas turbine engine and a method of supplying oil to the system. The oil system includes a main oil tank connected by oil lines with a supplementary oil storage tank, which has an actuator, and that are connected to one oil pump for supplying oil to the gas turbine engine. The supplementary oil storage tank is equal in size or larger than a steady state oil gulp of the system. The method includes supplying oil from a main oil tank through a pipe line using an oil pump, detecting the oil level in the oil system and determining if additional oil is required or requires removing using a sensor and an electronic controller, and transmitting a signal to an actuator to supply or remove oil to and from the pipe lines in the oil system from or into a supplementary oil storage tank.

A system includes a clutchless synchronous condensing coupling configured to couple a turbine shaft of a gas turbine system to a generator shaft of a synchronous generator of a power generation system. The clutchless synchronous condensing coupling includes a first coupling portion configured to couple to the turbine shaft, and a second coupling portion configured to couple to the generator shaft. The clutchless synchronous condensing coupling is configured to allow the power generation system to operate in an active power mode and a reactive power mode without a clutch assembly.

The proposed solution relates to a gear box assembly for an engine, having a gear box for transmitting a torque, at least one first, static part, at least one second, rotating part, which is mounted so as to be rotatable relative to the first, static part and on which at least one element of the gear box is provided, and a conduit system for conveying a fluid to elements of the gear box.

A feed device of the conduit system on the first, static part has at least two separate fluid guides, of which a first fluid guide is provided for guiding fluid from at least one first feed opening to a first supply line in the second, rotating part and a second fluid guide is provided for guiding fluid from at least one second feed opening to a second supply line in the second, rotating part.

A jet for lubricating a piece of a turbomachine for an aircraft such as an airplane, including a circulation duct for flowing a pressurised fluid, includes a first duct chamber, a second duct chamber, a first nozzle for passing between the first duct chamber and the second duct chamber, the first nozzle having a fixed minimum passage cross-section, and a second nozzle for passing from the second chamber to the outlet port formed by the second nozzle, the second nozzle including a fixed minimum passage cross-section. The ratio of the cross-section of the first nozzle to the cross-section of the second nozzle is between 0.16 and 3.61.

A jet for lubricating a piece of a turbomachine for an aircraft such as an airplane, including a circulation duct for flowing a pressurised fluid, includes a first duct chamber, a second duct chamber, a first nozzle for passing between the first duct chamber and the second duct chamber, the first nozzle having a fixed minimum passage cross-section, and a second nozzle for passing from the second chamber to the outlet port formed by the second nozzle, the second nozzle including a fixed minimum passage cross-section. The ratio of the cross-section of the first nozzle to the cross-section of the second nozzle is between 0.16 and 3.61.

A device for detecting particles in a lubricating oil of a machine, comprising a particle separator; at least one particle detector; a bypass conduit for the particle-concentrating oil, fluidly connected to an oil outlet of the particle separator, concentrating the particles; and wherein the at least one particle detector is operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit.

A device for detecting particles in a lubricating oil of a machine, comprising a particle separator; at least one particle detector; a bypass conduit for the particle-concentrating oil, fluidly connected to an oil outlet of the particle separator, concentrating the particles; and wherein the at least one particle detector is operatively mounted on the bypass conduit so as to be able to detect particles in the bypass conduit.

A gas turbine engine has a low pressure turbine driving a fan rotor through a gear reduction gearbox. The low pressure turbine has an input shaft driving a sun gear. The sun gear drives intermediate gears. There is an output shaft driven by one of a carrier and a ring gear in the gear reduction to in turn drive a fan drive shaft to drive the fan. A bearing compartment housing encloses the gear reduction gearbox. A fan shaft bearing supports the fan drive shaft. An oil supply system delivers oil to at least one of the sun gear, the intermediate gears and the ring gear. A scavenge system returns oil from the bearing compartment housing to a sump. An ejector pump communicates with a source of pressurized fluid to assist in driving oil from within the bearing compartment housing into a scavenge tube.

A system for supplying lubricant to a component of a gas turbine engine is provided. The system includes a first fluid circuit having a first pump drivably couplable to a fan shaft of the engine for pumping a lubricant from a lubricant tank to the component. The first fluid circuit allows only a unidirectional flow of the lubricant from the lubricant tank to the component via the first pump. The system also includes a second fluid circuit having a second pump drivably couplable to the fan shaft for pumping the lubricant from the component to the lubricant tank. The second fluid circuit allows only a unidirectional flow of the lubricant from the component to the lubricant tank via the second pump. First and second ports of the two pumps operate as input ports or output ports depending on the rotation direction of the fan shaft.