Patent application number | Description | Published |
20110238351 | METHOD AND SYSTEM FOR CORRECTING A TEMPERATURE MEASUREMENT SIGNAL - A method including digitally modelling a temperature measured by a sensor by using a modeled signal and estimating a lag error signal for the sensor from the modeled signal and a signal obtained by filtering the modeled signal, the filter having as a parameter an estimate of a time constant of the sensor, and correcting the measurement signal delivered by the sensor by the estimated lag error signal. The time constant of the sensor is estimated as a function of time from the measurement signal and the modeled signal. | 09-29-2011 |
20110246151 | METHOD AND A SYSTEM FOR ESTIMATING A STREAM TEMPERATURE IN A TURBOJET - An estimation method that can estimate a stream temperature in a turbojet including: digitally modeling the stream temperature with help of a modeled signal; and correcting the modeled signal with help of an error signal, a signal obtained after correction representing an estimate of the stream temperature. When predetermined conditions relating to at least one operating stage of a turbojet and to temperature stability are satisfied, the error signal is updated from the modeled signal and from a measurement signal of the stream temperature as delivered by a temperature sensor. | 10-06-2011 |
20120032809 | METHOD OF DETECTING AN ICING STATE OR A NEED FOR MAINTENANCE IN A TURBOMACHINE FUEL CIRCUIT - Detecting a state of icing in a turbomachine fuel circuit includes reading information representative of a first temperature T | 02-09-2012 |
20120201651 | CONTROL UNIT AND A METHOD FOR CONTROLLING BLADE TIP CLEARANCE - A method and system for controlling clearance between the tips of blades of a turbine rotor in a gas turbine airplane engine and a turbine ring of a casing surrounding the blades. A valve is controlled to act on a flow rate and/or a temperature of air directed against the casing. The valve is of the on/off type for switching between an open state and a closed state in a determined reaction time, the valve control module including a corrector for determining a first binary control signal that can take a first value corresponding to an open state and a second value corresponding to a closed state of the valve. The corrector includes a time-delay module for determining a binary control signal, with the duration between two successive changes of state in the control signal being not less than the reaction time of the valve. | 08-09-2012 |
20120215417 | SYSTEM FOR CONTROLLING THE ANGULAR POSITION OF STATOR BLADES AND METHOD FOR OPTIMIZING SAID ANGULAR POSITION - A system for controlling angular position of stator blades including: a mechanism for calculating a set angular position of the blades according to one of speeds; and a module for correcting the set position including: a mechanism for determining the angular position of the blades; a mechanism for measuring fuel flow rate of the turbine engine; a memory unit in which consecutive angular positions of the blades are combined with the fuel flow rates of the turbine engine measured at the angular positions; and a mechanism for determining a correcting angle according to the difference between the fuel flow rates measured between two consecutive angular position of the blades. A method for optimizing the common angular position can utilize the system. | 08-23-2012 |
20130008171 | METHOD OF CONTROLLING SPEED TRANSIENTS IN A TURBINE ENGINE - A method of controlling an engine in which a fuel flow setpoint is determined, the method comprising:
| 01-10-2013 |
20130091851 | METHOD AND A DEVICE FOR PRODUCING A SETPOINT SIGNAL - A method and device producing a setpoint signal representing a flow rate of fuel that a metering unit having a slide valve is to supply to a fuel injection system of a combustion chamber in a turbine engine, the position of the valve depending on the setpoint signal. The method: obtains a first signal representing a measurement as delivered by a flow meter of a flow rate of fuel injected into the chamber; evaluates a second signal representing the flow rate of fuel injected into the chamber based on a measurement of the position of the valve; estimates a third signal representative of the measurement delivered by the flow meter by applying a digital model of the flow meter to the second signal; and produces the setpoint signal by adding a compensation signal to the first signal, the compensation signal obtained by subtracting the third signal from the second signal. | 04-18-2013 |
20130158831 | DETECTION OF THE INGRESS OF WATER OR HAIL INTO A TURBINE ENGINE - A detection method for detecting ingestion of water or hail in a gas turbine engine, the engine including at least a compressor, a combustion chamber, and a turbine, the method including: estimating a value of a first indicator representative of water or hail being ingested; estimating a value of a second indicator representative of water or hail being ingested, the second indicator being different from the first indicator; and calculating a value of a global indicator by summing at least the first indicator and the second indicator. | 06-20-2013 |
20130186191 | METHOD AND DEVICE FOR DETECTING A ROTATIONAL SEPARATION ADVERSELY AFFECTING A TURBINE ENGINE COMPRESSOR - A method and device detecting a rotating stall affecting a turbine engine compressor. The detection method includes: detecting an abnormal acceleration of the engine or an operating line of the compressor that is characteristic of a failure of the engine; storing a reference temperature measured at an outlet from a turbine of the engine at an instant of detection; comparing a determined temperature threshold with the difference between a current temperature at the outlet of the turbine as measured after detection and the reference temperature; and identifying that a rotating stall is present in event of the threshold being exceeded. | 07-25-2013 |
20130255221 | METHOD OF CONTROLLING A TURBOMACHINE - A method of controlling a turbine engine, including: measuring a first temperature by a first temperature sensor; measuring a second temperature by a second temperature sensor; estimating a third temperature modeling the first temperature; and determining at least one control setpoint for at least one piece of variable-geometry equipment of the engine, as a function of the measured first temperature. The first sensor presents a time constant longer than a time constant of the second sensor. The method further detects ingestion of water or hail as a function of a drop in the measured second temperature; and when water or hail ingestion is detected, determines the control setpoint as a function of the estimated third temperature. | 10-03-2013 |
20140075952 | METHOD FOR THE ELIMINATION OF ROTATIONAL STALL IN A TURBINE ENGINE - A method for eliminating rotational stall in a compressor of a turbine engine, includes automatically detecting surge in the turbine engine; automatically shutting-down the turbine engine; in the event surge is detected, automatically restoring a surge margin; and automatically re-igniting the turbine machine. | 03-20-2014 |
20140257667 | METHOD OF SYNCHRONISING THE ENGINES OF AN AIRCRAFT - A method of synchronizing engines of an airplane in accordance with at least one activation logic ( | 09-11-2014 |
20140360255 | MONITORING THE FUEL SUPPLY CUTOFF VALVE FOR AN ENGINE - Method of testing an engine fuel supply cutoff valve, characterised in that it comprises steps to: | 12-11-2014 |
20150082802 | TURBOMACHINE COMPRISING A MONITORING SYSTEM COMPRISING A MODULE FOR ENGAGING A PROTECTION FUNCTION OF THE TURBOMACHINE AND MONITORING METHOD - An aircraft turbine engine comprising at least one spool rotating at speed N | 03-26-2015 |