Abstract: An assembly includes: a fan drive reducing gear of an aircraft turbine engine, and a lubrication system including: a housing enclosing the reducing gear; a device for spraying lubricant onto the reducing gear; a lubricant supply pipe intended to convey the lubricant towards the spraying device; a lubricant recovery pipe communicating with a bottom of the housing; a controlled valve equipping the recovery pipe; and a lubricant overflow discharge pipe connected to an overflow outlet of the bottom of the housing situated above a horizontal level of a bottom point of a gearing of the reducing gear, and to the recovery pipe, downstream from the valve.

Abstract: An assembly includes: a fan drive reducing gear of an aircraft turbine engine, and a lubrication system including: a housing enclosing the reducing gear; a device for spraying lubricant onto the reducing gear; a lubricant supply pipe intended to convey the lubricant towards the spraying device; a lubricant recovery pipe communicating with a bottom of the housing; a controlled valve equipping the recovery pipe; and a lubricant overflow discharge pipe connected to an overflow outlet of the bottom of the housing situated above a horizontal level of a bottom point of a gearing of the reducing gear, and to the recovery pipe, downstream from the valve.

Abstract: The present invention relates to a turbine engine (10) comprising: at least one hollow guidance arm (44) radially extending from a hub (38) to an annular housing (42), and having one radially external end which opens out in an opening (60) of said annular housing, a radial countershaft (48) located in said guidance arm (44) for rotatably driving at least one device arranged at the periphery of said annular housing (42). According to the invention, a transfer case (50) is disposed facing the opening (60) of the annular housing, and the turbine engine comprises rotational power transfer means (78, 52) between the radial countershaft (48) and the device, with the guidance arm (44) being equipped, at the external end thereof, with a widened section (56) by which it opens out in the opening (60) of the annular housing and in which part of the transfer case (50) is accommodated.

Abstract: A gearbox for an aircraft turbine engine has a casing defining an enclosure for housing rotating elements lubricated by oil. At least one tubular sleeve is coupled to the rotating elements and configured to rotate a shaft. The sleeve includes splines configured to cooperate with complementary splines of said shaft. The gearbox further includes means for recovering lubricating oil from the rotating elements and conveying the recovered oil by streaming to the splines to lubricate the splines.

Abstract: A gearbox for an aircraft turbine engine has a casing defining an enclosure for housing rotating elements lubricated by oil. At least one tubular sleeve is coupled to the rotating elements and configured to rotate a shaft. The sleeve includes splines configured to cooperate with complementary splines of said shaft. The gearbox further includes means for recovering lubricating oil from the rotating elements and conveying the recovered oil by streaming to the splines to lubricate the splines.

Abstract: The present invention relates to a turbine engine (10) comprising: at least one hollow guidance arm (44) radially extending from a hub (38) to an annular housing (42), and having one radially external end which opens out in an opening (60) of said annular housing, a radial countershaft (48) located in said guidance arm (44) for rotatably driving at least one device arranged at the periphery of said annular housing (42). According to the invention, a transfer case (50) is disposed facing the opening (60) of the annular housing, and the turbine engine comprises rotational power transfer means (78, 52) between the radial countershaft (48) and the device, with the guidance arm (44) being equipped, at the external end thereof, with a widened section (56) by which it opens out in the opening (60) of the annular housing and in which part of the transfer case (50) is accommodated.

Abstract: The present invention relates to a connection accessory and to a terminal equipped with such an accessory. This accessory is designed to perform connection of an electrical conductor such as an aluminum cable to a contact strip of an electrical apparatus such as a circuit breaker. This accessory is characterized in that it comprises a pad made of a conducting material and presenting an appreciably U-shaped transverse cross section, said pad being able to be fixed in removable manner onto the contact strip and to receive a conductor designed to be clamped against the pad by a clamping means in order to establish the electrical contact between the contact strip and the cable.

Abstract: An electrical protection apparatus is disclosed, including a circuit breaker and an effector. The circuit breaker includes a first switch circuit including stationary and movable contacts, provided between input and output terminals. The effector includes a second switch circuit that is provided in series with the first switch circuit. Further, the circuit breaker includes an actuating mechanism for opening the contacts, electromagnetic and thermal trip devices for controlling the actuating mechanism, and first and second guiding horns spaced apart from each other and defining therebetween an arc extinguishing chamber. The first arc guiding horn is electrically connected with the movable contact to the input terminal, while the second arc guiding horn includes a switching electrode extending therefrom, the switching electrode being spaced apart from the stationery contact via an insulating gap.

Abstract: A process whereby fuel injection is interrupted in response to detection of a deceleration and injection is again ordered when a threshold linked to the engine speed is reached. The engine speed (N) or period of rotation (T) is measured from consecutive equal intervals or angles of rotation. A difference (.DELTA.T, .DELTA.N) is then computed between the value of the last measured speed or period and the value seen through a high-pass filter of the speed or period measured at the preceding interval. This difference (.DELTA.T, .DELTA.N) is compared with a fixed threshold (S) and if an engine deceleration condition is detected, fuel injection is again ordered when the difference (.DELTA.T, .DELTA.N) is greater than the threshold (S).

Abstract: A device for controlling the ignition and the fuel injection of an internal combustion engine, including a pressure sensor, a position sensor associated with a target fixedly mounted in rotation with the crankshaft, a first computer of the programmed microcomputer type in which are stored values of the angle of advance and the injection time addressable as a function of the engine speed and pressure parameters, and a second computer which, from the output signal of the position sensor applies to the first computer a synchronization signal assuring the marking of each top dead center and/or each bottom dead center, the first computer receiving the output signal from the pressure sensor and computing, as a function of the parameters and under the control of the synchronization signal, the injection time and the angle of ignition advance, the value of the latter being applied by the first computer from the second computer which computes the conduction angle of the ignition coil and controls the conduction of the

Abstract: A novel process and system for computing and adjusting the optimum ignition advance in an internal combustion engine wherein knocking is detected by means of an accelerometer rigidly fastened to the cylinder head of the engine. An output from the accelerometer is integrated, converted into digital form, and processed by processing circuits to derive an average value C proportional to n preceding knocks and two comparison thresholds S.sub.1 and S.sub.2, each a linear function of the preceding average value C. The accelerometer output integrated and converted into digital form is compared with each of these thresholds and the existence of a preknocking or audible knocking value is deduced and then used to act on the programmed electronic ignition advance.

Abstract: An electronic circuit for picking-up and shaping signals emitted from the breaker of a conventional or electronic ignition system is provided which consists of an infrared optical coupler in which the emitter is connected to the terminal common to both said breaker and the ignition coil of the ignition system via a circuit capable of calibrating said signals and in which the receiver of said infrared optical coupler is connected to the base of a transistor operating between the locked and the saturated condition wherein the output terminals of said transistor are connected to a circuit capable of eliminating stray signals.

Abstract: A digital computer for calculating the optimal air/fuel mixture of a carburettor-type internal combustion engine by injecting a variable amount of air into the main air induction system, comprising an address computer disposed between the contract breaker and the memories of the computer; a first memory containing the data concerning the characteristics of the engine, said data being stored as a function of the rotational velocity of the engine; a second memory containing the data concerning the subservience velocity as a function of the engine rotational velocity; and an injection time computer adapted to sum up the data received by said first memory and the data received by an up-and-down-counter responsive both to a chemical analysis probe and to the second memory, said injection time computer being connected to a circuit for triggering said solenoid operated valve.