Patent application number | Description | Published |
20090029214 | System and a method for regulating the temperature of a fuel cell - The invention relates to a system for regulating the temperature of a fuel cell that is cooled by a cooling fluid traveling through the cell, the system including both first control means for measuring the temperature of the cooling fluid and for controlling the flow rate of the controlling fluid as a function of said measured temperature of said cooling fluid, comprising second control means for measuring the flow rate of the cooling fluid and for controlling the temperature of the cooling fluid as a function of a flow rate difference between the command flow rate specified by said first control means and said corresponding measured flow rate of the cooling fluid such that said command temperature specified by the second control means compensates for said flow rate difference. | 01-29-2009 |
20090071224 | Device for validating measurements of a dynamic magnitude - The invention relates to a device for validating measurements of a dynamic magnitude x coming from an article having main sensors placed thereon on three main axes for measuring of said dynamic magnitude x, the device including at least one additional sensor for measuring at least one additional component of the dynamic magnitude, said additional sensor being placed on the article on at least one additional axis that is concurrent with the three main axes and that is not contained in any of the planes defined by any two of the three main axes; means for determining an estimator U representative of the dynamic magnitude from the components; and means for validating the determination of the estimator U representative of the dynamic magnitude. | 03-19-2009 |
20100094522 | METHOD AND A DEVICE FOR CALCULATING A STARTING OR STOP SEQUENCE FOR AN ENGINE - The method serves to calculate a start sequence or a stop sequence for an engine, said sequence comprising a plurality of cues at which predetermined actions should be performed in the control of said engine. The method comprises:
| 04-15-2010 |
20100121552 | DEVICE FOR ADJUSTING AN OPERATING VARIABLE OF AN ENGINE - This device serves to adjust at least one operating variable of an engine as a function of a setpoint. It comprises:
| 05-13-2010 |
20130046713 | FAILURE DETECTION AND LOCATING SYSTEM AND ENGINE CONTAINING THE SAME - A system for detecting and locating failures that occur in a complex system includes elements (CAP, MOD | 02-21-2013 |
20130247542 | SPACE LAUNCHER PROPULSION SYSTEM IMPLEMENTING A METHOD OF REGULATING PROPELLANT COMPONENT CONSUMPTION - A space launcher propulsion system includes: an engine fed by at least two propellant component tanks; a measurement mechanism to measure a quantity of propellant component actually consumed in each of the tanks, by sensors becoming uncovered; an estimation mechanism to estimate instantaneous flow rates of each of the propellant components on the basis of at least one operating parameter of the engine; and a correction mechanism correcting the way the estimation mechanism estimates on the basis of the measured consumed quantities and of the estimated instantaneous flow rates. | 09-26-2013 |
20140174054 | FEED SYSTEM AND A METHOD OF SUPPRESSING THE POGO EFFECT - A rocket engine feed system, includes a feed circuit including a device for varying a gas volume in the feed circuit to suppress the POGO effect. A method of suppressing the POGO effect varies at least one hydraulic resonant frequency by varying a rate at which gas is injected into the feed circuit. | 06-26-2014 |
20150030464 | METHOD FOR SECURING THE OPERATION OF A TURBOMACHINE - A method of making safe operation of a rotary assembly of a turbomachine including a turbine and a rotary machine, the method anticipating an event of exceeding a predetermined threshold speed by repetitively performing a prediction cycle including: measuring magnitudes relating to operation of the turbomachine, including real speed of rotation of its rotary assembly; based on the magnitudes, estimating driving and resisting torques applied to the rotary assembly; preparing a representative value representative of the difference between these two torques; and calculating a predicted speed of rotation for the rotary assembly at a given time horizon based on the representative value and the real speed of rotation. An action is taken on the operation of the turbomachine to limit an extent to which its rotary assembly exceeds the threshold speed in the event of the predicted speed of rotation exceeding the threshold speed. | 01-29-2015 |