MESSIER-BUGATTI-DOWTY Patent applications |
Patent application number | Title | Published |
20160102406 | METHOD OF COATING THE SURFACE OF A METAL SUBSTRATE - A method of coating the surface of a metal substrate includes a) applying a first composition on the surface of a metal substrate, the first composition being a solution comprising a liquid medium including sol-gel precursors of alcoxysilane type or of metallo-organic type; b) subjecting the first composition to first heat treatment to form an anchor layer on the metal substrate in which the sol-gel precursors are bonded to the metal substrate, a first temperature being imposed during the first heat treatment that is sufficient to eliminate all or part of the liquid medium and to encourage the bonding of the sol-gel precursors to the metal substrate; and c) applying a second composition on the anchor layer. The second composition includes coating compounds to obtain a coating on the anchor layer by forming bonds between the sol-gel precursors and the coating compounds. | 04-14-2016 |
20160101849 | AIRCRAFT LANDING GEAR - The invention relates to an aircraft landing gear equipped with a steering device ( | 04-14-2016 |
20160096619 | AIRCRAFT UNDERCARRIAGE - An undercarriage comprising at least:
| 04-07-2016 |
20160091522 | DEVICE FOR MEASURING THE ROTATIONAL SPEED OF A WHEEL - The invention relates to a measurement device for measuring the rotational speed of a vehicle wheel, the measurement device comprising a body ( | 03-31-2016 |
20160090173 | AIRCRAFT LANDING GEAR - An aircraft landing gear comprising an axle ( | 03-31-2016 |
20160084681 | PROXIMITY SENSOR FOR AIRCRAFT, PROVIDED WITH A SPECIAL SEALED ASSEMBLY | 03-24-2016 |
20160039518 | METHOD FOR ROTATIONALLY DRIVING AN AIRCRAFT WHEEL - The invention relates to a method for rotationally driving an aircraft wheel, the wheel being equipped with a rim comprising two half-rims assembled by bolts ( | 02-11-2016 |
20160032440 | PROCESS FOR FABRICATING AN AIRCRAFT PART COMPRISING A SUBSTRATE AND A SUBSTRATE COATING LAYER - A method of fabricating a part ( | 02-04-2016 |
20160024631 | METHOD OF PREPARING A METAL ALLOY PART - A method of converting an alloy comprising a majority of titanium, the method comprising:
| 01-28-2016 |
20160023310 | METHOD OF RESTORING A WHEEL TO COMPLIANCE AND TOOLING FOR PERFORMING THE METHOD - A method of restoring a wheel ( | 01-28-2016 |
20160016657 | AIRCRAFT LANDING GEAR PROVIDED WITH AN ADJUSTABLE ROLLER - The invention relates to an aircraft undercarriage intended to be mounted so as to be able to move on the aircraft between a deployed position and a retracted position, the undercarriage comprising a roller ( | 01-21-2016 |
20150375855 | METHOD FOR MANAGING AN ELECTRIC MOTOR - The invention relates to a method for managing an electric motor ( | 12-31-2015 |
20150360772 | AIRCRAFT WHEEL EQUIPPED WITH MEANS FOR THE ROTATIONAL DRIVING THEREOF BY A DRIVE ACTUATOR - The invention relates to an aircraft wheel having a rim comprising brake discs driving keys ( | 12-17-2015 |
20150353190 | METHOD FOR MANAGING THE BRAKING OF AN AIRCRAFT WHEEL - Method for managing the braking of a wheel ( | 12-10-2015 |
20150345545 | FUSIBLE MEMBER INTENDED TO JOIN TWO YOKES TO FORM A HINGE - The invention relates to a tubular fusible member ( | 12-03-2015 |
20150337915 | DISC BRAKE FOR AN AIRCRAFT WHEEL - The invention relates to a disc brake for an aircraft wheel, comprising friction discs ( | 11-26-2015 |
20150321751 | AIRCRAFT LANDING GEAR EQUIPPED WITH MEANS FOR DRIVING IN ROTATION WHEELS CARRIED BY THE LANDING GEAR - A landing gear that comprises an axle ( | 11-12-2015 |
20150314860 | LANDING GEAR WITH REALIGNING LOCK LINK ASSEMBLY - The invention relates to aircraft landing gear comprising: a leg ( | 11-05-2015 |
20150314859 | AIRCRAFT UNDERCARRIAGE LEG INCLUDING A UNIT FOR DRIVING THE WHEELS - Aircraft undercarriage leg including an axle ( | 11-05-2015 |
20150314321 | PROTECTION DEVICE AND A METHOD IMPLEMENTING SUCH A DEVICE - A protection device ( | 11-05-2015 |
20150285350 | METHOD FOR MANEUVERING DOORS OF BAYS OF AIRCRAFT, AND ACTUATOR USED THEREFOR - The invention relates to a method for locking a mobile element ( | 10-08-2015 |
20150275992 | BRAKE ACTUATOR FOR AN AIRCRAFT WHEEL HYDRAULIC BRAKE - A brake actuator comprising a sleeve ( | 10-01-2015 |
20150273938 | AIRCRAFT WHEEL COMPRISING A DUCT ESTABLISHING A LEAKAGE PATH IN THE WHEEL - The invention relates to an aircraft wheel comprising a rim and a tyre ( | 10-01-2015 |
20150266568 | ELECTROMECHANICAL BRAKE ACTUATOR WITH PARK BLOCKING FOR AIRCRAFT - The invention relates to an electromechanical brake actuator for an aircraft wheel, comprising an electric motor ( | 09-24-2015 |
20150239553 | FIBER REINFORCEMENT FOR MAKING AN ELONGATE MECHANICAL PART OUT OF COMPOSITE MATERIAL - The invention relates to fiber reinforcement for making an elongate mechanical part ( | 08-27-2015 |
20150219477 | MEASURING DIMENSIONAL CHARACTERISTICS OF A PRODUCTION PART - A measuring tool ( | 08-06-2015 |
20150217748 | METHOD FOR MONITORING AT LEAST TWO ELECTROMECHANICAL BRAKING ACTUATORS - A method for monitoring at least two aircraft wheel electromechanical braking actuators. For each electromechanical actuator, the method includes first determining a current value representative of the power supply current of the electromechanical actuator and determining a reference current value estimated from the power supply currents of at least one other electromechanical actuator. Then, the representative current value and the reference current value are compared. Any abnormal operation of the electromechanical actuator is detected when the difference between the representative current value and the reference current value is above a predetermined threshold. | 08-06-2015 |
20150198209 | METHOD FOR MONITORING A BLOCKING MEMBER, AND ELECTROMECHANICAL ACTUATOR - A method for monitoring a blocking member ( | 07-16-2015 |
20150183268 | AIRCRAFT WHEEL RIM WITH REMOVABLE FLANGE - Aircraft wheel rim in two parts, one of them a main part ( | 07-02-2015 |
20150175257 | METHOD OF CONTROLLING AN ELECTRIC MOTOR FOR DRIVING ROTATION OF AN AIRCRAFT WHEEL - A control method for controlling an electric motor driving rotation of an aircraft wheel ( | 06-25-2015 |
20150144735 | METHOD FOR REDUCING THE APPARENT MANOEUVRING TIME FOR LANDING GEAR OF AN AIRCRAFT - The invention relates to a method for controlling the manoeuvring of the landing gear of an aircraft, in which at least one of the steps of pulling on the doors of the bay to relieve the door retaining hook, actuating the door hook or hooks to free the doors and opening the doors is executed in response to the detection of a flight situation suitable for the occurrence of a manoeuvre order, even before the manoeuvre order is received. | 05-28-2015 |
20150137581 | AIRCRAFT WHEEL WITH ROTATIONAL DRIVE ATTACHED TO CLEVISES PROJECTING FROM WHEEL RIM - An aircraft wheel equipped with rotational drive ( | 05-21-2015 |
20150136899 | AIRCRAFT WHEEL - An aircraft wheel which is provided with rotational driving unit ( | 05-21-2015 |
20150136547 | METHOD FOR THE RECONDITIONING AND USE OF BRAKE DISCS OF THE REAR STATOR TYPE WITH STUDS, ASSEMBLED DISC AND CORRESPONDING STACK OF DISCS - The invention relates to a method for the reconditioning and use of brake discs of the rear stator type with studs, the method comprising the steps of using a first disc ( | 05-21-2015 |
20150136543 | ELECTROMECHANICAL ACTUATOR FOR VEHICLE BRAKE AND BRAKING SYSTEM COMPRISING SUCH AN ACTUATOR - The invention relates to an electromechanical actuator for a vehicle brake comprising a body ( | 05-21-2015 |
20150122595 | BRAKING ACTUATOR FOR A HYDRAULIC BRAKE OF AN AIRCRAFT WHEEL - A braking actuator for a hydraulic aircraft brake, received in a cavity of a ring of the brake. The actuator comprises a liner structure ( | 05-07-2015 |
20150122594 | BRAKE ACTUATOR FOR AIRCRAFT WHEEL HYDRAULIC BRAKE - A brake actuator for an aircraft hydraulic brake, insertable in a cavity of a brake ring. The actuator comprises a liner ( | 05-07-2015 |
20150075361 | TELESCOPIC ACTUATOR - The invention relates to a telescopic actuator comprising a rod ( | 03-19-2015 |
20150027256 | DEVICE FOR DRIVING AN AIRCRAFT WHEEL IN ROTATION - The invention relates to a device for driving rotation of an aircraft wheel comprising a rim ( | 01-29-2015 |
20150021432 | CONTROL BOX - The invention provides a control box for selectively delivering orders to receivers ( | 01-22-2015 |
20150015127 | ELECTROMECHANICAL ACTUATOR - An electromechanical actuator comprising an actuator member and an electric motor ( | 01-15-2015 |
20140367209 | WHEEL BRAKE FOR AN AIRCRAFT, IN PARTICULAR FOR A HELICOPTER - The invention relates to a brake for an aircraft wheel comprising firstly calipers with an outer jaw ( | 12-18-2014 |
20140324384 | METHOD FOR MEASURING THE THICKNESS OF A COATING LAYER BY INDUCING MAGNETIC FIELDS - A method of measuring the thickness of a coating layer of a workpiece, the layer being formed on a substrate of the workpiece. The method comprises several steps. First, feeding a probe alternating electrical signal to induction device in order to induce a magnetic field in the workpiece. Second, measuring at least one physical characteristic that varies as a function of the magnetic field induced in the workpiece. Third, determining first and second values of an indicator, the values being determined respectively from measurements of the physical characteristic taken when the electrical signal has first and second given frequencies. Forth, calculating the difference between the first and second values of the indicator and determining the thickness of the coating layer as a function of the difference and of predetermined data correlating: the difference between the values of the indicator; and corresponding values for thicknesses of the coating layer. | 10-30-2014 |
20140297095 | METHOD OF MANAGING THE LIFETIME OF A STACK OF DISKS OF AN AIRCRAFT BRAKE - A method of managing the lifetime of a stack of disks of an aircraft brake having at least one braking actuator including a pusher adapted to press selectively against the stack of disks in order to generate a braking force for an associated wheel, the method comprising the following steps, for a given flight of the aircraft:
| 10-02-2014 |
20140283974 | METHOD FOR MANUFACTURING A STRUCTURAL PART MADE OF A COMPOSITE MATERIAL AND INCLUDING A RADIALLY ORIENTED DOUBLE YOKE - A method of fabricating an aircraft landing gear rocker beam comprising a body having a clevis ( | 09-25-2014 |
20140263832 | MULTIFUNCTION DEVICE FOR AN UNDERCARRIAGE - A multifunction device for an undercarriage, the device comprising at least a first shaft rotatably mounted on the aircraft to rotate about an axis of rotation that is substantially parallel to a hinge axis hinging the undercarriage to the aircraft, a telescopic second shaft rotatably mounted in the undercarriage and extending down along the undercarriage to the proximity of wheels carried thereby, and motor means adapted to cause the first shaft to rotate. The telescopic second shaft is a single shaft and it extends inside the undercarriage to the proximity of an axle carrying the wheels of the undercarriage, being connected to a differential connected to the wheels via drive shafts extending inside the axle. | 09-18-2014 |
20140262641 | ELECTROMECHANICAL ACTUATOR FOR A BRAKE - An electromechanical actuator for a vehicle brake, the actuator comprising first and second portions | 09-18-2014 |
20140231584 | ANTI-LOFTING DEFLECTOR FOR AIRCRAFT LANDING GEAR - An anti-lofting deflector for landing gear having two wheels on an axle, the deflector comprising: | 08-21-2014 |
20140209738 | DEVICE FOR COUPLING AN ACTUATOR FOR CONTROLLING THE LANDING GEAR OF AN AIRCRAFT - A device for coupling an actuator for operating an aircraft undercarriage to an aircraft structure. The device comprises a lever having a first end for hinging to the structure of the aircraft, and a second end to which the actuator is hinged, a pre-loading structure acting on the lever to urge it towards a stable rest position that is occupied by the lever in the absence of any force transiting through the actuator; and an abutment structure defining at least one working position for the lever when the actuator is activated. | 07-31-2014 |
20140183785 | PROCESS FOR MANUFACTURING A COMPOSITE, GENERALLY TRIANGULAR, STRUCTURAL PART - A method of fabricating an element ( | 07-03-2014 |
20140180506 | METHOD OF MANAGING THE BRAKING OF AN AIRCRAFT - A method of managing the braking of an aircraft, the aircraft having a plurality of wheels R | 06-26-2014 |
20140180505 | METHOD OF MANAGING THE BRAKING OF AN AIRCRAFT - The invention relates to a method of managing the braking of an aircraft, the aircraft having a plurality of wheels R | 06-26-2014 |
20140175860 | AIRCRAFT WHEEL FITTED WITH DRIVEKEY-BOLTS - An aircraft wheel comprising two half-wheels ( | 06-26-2014 |
20140156113 | METHOD OF MANAGING A STEERING COMMAND FOR A STEERABLE PORTION OF AIRCRAFT LANDING GEAR - The invention relates to a method of managing a steering command for a steerable portion | 06-05-2014 |
20140147222 | PORTABLE EQUIPMENT FOR MACHINING A LOWER PORTION OF AN AIRCRAFT LANDING GEAR CASING - Portable tooling for machining a bottom portion of an aircraft landing gear strut having a plurality of orifices. The portable tooling comprising a collar for positioning it on the bottom portion of the strut, at least one indexing member for angularly indexing the collar on the strut and for preventing it from moving, and a support that is removably fitted on the collar and that is fitted with a motor-driven machining spindle that carries a tool mounted to move on the support along a direction converging on the strut in order to machine an orifice extending in register with the tool. The collar is arranged in such a manner as to be capable of receiving the support in a plurality of angular positions, in each of which the tool extends in register with one of the orifices to be machined. | 05-29-2014 |
20140137680 | MECHANICAL ACTUATOR WITH A HYDRAULIC DAMPER DEVICE - The invention relates to an actuator comprising a cylinder ( | 05-22-2014 |
20140116821 | SYSTEM FOR MAINTAINING A PRESSING FORCE BY THE COMBINED ACTION OF TWO MEMBERS - An aircraft electromechanical braking system comprising a braking control unit | 05-01-2014 |
20140116814 | ELECTROMECHANICAL BRAKING METHOD FOR REDUCING VIBRATION - The invention relates to an electromechanical braking method for an aircraft having at least one electromechanical brake | 05-01-2014 |
20140100719 | ELECTROMECHANICAL BRAKING SYSTEM ARCHITECTURE - The invention relates to a braking system architecture for an aircraft having wheels 1 braked by means of respective brakes 2, each brake having a plurality of electromechanical actuators | 04-10-2014 |
20140091173 | AIRCRAFT WHEEL WITH A UNIVERSAL DRIVE DOG - The invention relates to an aircraft wheel comprising a rim adapted to receive a tire, and a hub connected to the rim ( | 04-03-2014 |
20140075739 | METHOD OF FASTENING AN AIRCRAFT WHEEL DRIVE MEMBER ON AN UNDERCARRIAGE CARRYING A WHEEL - The invention provides a method of mounting an aircraft wheel drive member ( | 03-20-2014 |
20140069073 | DEVICE AND METHOD FOR SPREADING A CABLE OF CARBON FIBERS OR CARBON YARNS - A device for spreading a cable of carbon fibers or carbon yarns, includes a disk mounted on a rotary shaft and provided with at least one comb adapted to comb a cable of carbon fibers or carbon yarns in a direction substantially parallel to the longitudinal direction of the fibers or yarns of the cable. The comb includes a plurality of teeth protruding radially toward the outside of the disk, and a device for rotating the disk around its rotary axis. Furthermore, a method for spreading a cable of carbon fibers or carbon yarns, includes at least making the teeth of the comb of the device flush with the cable in a direction substantially parallel to the longitudinal direction of the fibers or yarns of the cable. | 03-13-2014 |
20140060168 | EQUIPMENT FOR MEASURING THE INFLATION PRESSURE OF A TIRE OF A VEHICLE WHEEL - The invention provides measurement equipment for measuring the inflation pressure of a tire of a vehicle wheel | 03-06-2014 |
20130337180 | METHOD OF FABRICATING A FRICTION PART BASED ON C/C COMPOSITE MATERIAL - A fiber preform made of carbon fibers is densified with a carbon matrix in a plurality of separate stages. After a first densification stage and before the end of carbon matrix densification, ceramic particles are introduced in order to be dispersed within the composite material part. The introduced particles have a mean size of less than 250 nm and are made at least of a ceramic compound of an element selected from titanium, yttrium, tantalum, and hafnium, the ceramic compound being selected from oxides, nitrides, and mixed oxide, carbide, and/or nitride compounds that do not react with carbon at a temperature of less than 1000° C. and that have a melting point higher than 1800° C. | 12-19-2013 |
20130327884 | DEVICE FOR BRAKING AND ROTATING AN AIRCRAFT WHEEL - The invention relates to a device for braking and driving rotation of a wheel ( | 12-12-2013 |
20130305911 | METHOD FOR BRAIDING REINFORCING FIBRES WITH VARIATION IN THE INCLINATION OF THE BRAIDED FIBRES - The invention relates to a method of braiding reinforcing fibers on a mandrel ( | 11-21-2013 |
20130299286 | BRAKE FOR AN AIRCRAFT WHEEL - A brake for an aircraft wheel comprising an actuator-carrier | 11-14-2013 |
20130297167 | METHOD OF MANAGING THE BRAKING OF AN AIRCRAFT TO LIMIT ITS PITCH - The invention relates to a method of managing the braking of an aircraft | 11-07-2013 |
20130285615 | MODULE FOR CONVERTING VOLTAGE BETWEEN A HIGH-VOLTAGE ELECTRICAL NETWORK OF AN AIRCRAFT AND AN ENERGY STORAGE ELEMENT - A module converting voltage between a high-voltage electrical network and at least one energy storage element an aircraft, the conversion module configured to reversibly convert between a DC voltage of the high-voltage electrical network and a DC voltage of the energy storage element, the DC voltage of the energy storage element floating relative to the DC voltage of the high-voltage electrical network and centered relative to the mass of the aircraft, the module including an input module including two filters each capable of receiving a DC voltage, a first arm and a second arm including switches, and a mechanism controlling the switches, operating per cycle of a switching period and capable of controlling at least one first switch and at least one second switch identically but offset by a half-period, whereby the first switch is open when the second switch is closed and vice versa. | 10-31-2013 |
20130264418 | METHOD OF MANAGING SYSTEMS ASSOCIATED WITH THE LANDING GEAR OF AN AIRCRAFT - The invention relates to a method of managing an aircraft having undercarriages carrying a certain number of braked wheels, the aircraft including:
| 10-10-2013 |
20130263419 | METHOD OF USING AND RENOVATING A DISK FROM A STACK OF DISKS OF A VEHICLE BRAKE - The invention relates to a method of using and renovating a disk ( | 10-10-2013 |
20130256079 | COUPLING DEVICE BETWEEN TWO ROTARY ELEMENTS - The invention relates to a device for coupling together two elements mounted to rotate about a common axis of rotation (X) in order to enable one of the elements to be selectively driven in rotation by the other, the device comprising two members ( | 10-03-2013 |
20130253736 | ELECTROMECHANICAL BRAKING SYSTEM FOR AN AIRCRAFT - The invention relates to an aircraft braking system having brakes with electromechanical braking actuators (103) adapted to press selectively against associated stacks of disks in order to generate a braking torque on associated wheels of the aircraft; at least one control module (130) receiving braking setpoints and responding by generating a braking command (121); and at least one power module (120) responding to the braking command by delivering AC power to the motors of actuators connected to the power module so that the motors develop a braking force corresponding to the braking setpoints. According to the invention, the control module includes a digital processor stage (131) and an analog processor unit (135). | 09-26-2013 |
20130251519 | TURBOJET CASING AND TURBOJET RECEIVING SUCH CASINGS - A turbojet casing adapted to receive a plurality of vanes, the casing including attachment means ( | 09-26-2013 |
20130248041 | DEVICE FOR GUIDING AND HOLDING A CABLE WITHIN A PIPE - The invention provides a device ( | 09-26-2013 |
20130233966 | METHOD OF RESETTING THE ORIENTATION OF AN AIRCRAFT UNDERCARRIAGE HAVING A STEERABLE BOTTOM PORTION - The invention provides a steering resetting method for an aircraft undercarriage that includes a leg in which a steerable bottom portion is mounted to slide against a suspension force generated by a shock absorber, the undercarriage being provided with a controllable steering member for causing the steerable bottom portion to swivel in response to an angular position setpoint, the undercarriage also including at least one angular position sensor adapted to generate an electrical signal representative of the angular position of the steerable bottom portion and suitable for use in controlling the steering member; the method comprises the step, performed when the steerable bottom portion is in an indexed angular position while the aircraft is in flight and the undercarriage is fully extended, of setting the electrical signal from the sensor to a determined reset value. | 09-12-2013 |
20130230075 | ELECTRIC BRAKE FOR AN AIRCRAFT WHEEL, THE BRAKE INCLUDING AN ELECTROMECHANICAL ACTUATOR FITTED WITH A TEMPERATURE SENSOR - An electric brake for an aircraft wheel comprising a support | 09-05-2013 |
20130228649 | METHOD OF EXTENDING AIRCRAFT UNDERCARRIAGES IN EMERGENCY MODE - A method of actuating undercarriage latching boxes and associated hatch latching boxes of an aircraft in an emergency mode, the latching boxes having at least one feed port and at least one unlatching member that is operable when the port is fed with fluid under pressure, the aircraft also being provided with a hydraulic braking circuit. The method includes connecting at least one tapping circuit to the braking circuit of the aircraft in association with an isolation valve that is kept, in a normal mode, in an isolation state and that can be controlled to be placed in an open state in which at least some of the feed ports of the latching boxes are fed by the tapping circuit connected to the braking circuit. | 09-05-2013 |
20130213560 | METHOD FOR PRODUCING PARTS MADE FROM COMPOSITE MATERIALS WITH A BRAIDED COVERING - The invention relates to a method of making a composite material part, the method comprising the steps of:
| 08-22-2013 |
20130200212 | CONTROL BOX - The invention provides a control box for selectively delivering orders to receivers ( | 08-08-2013 |
20130171000 | TURBOJET ENGINE BLADE, IN PARTICULAR A GUIDE BLADE, AND TURBOJET ENGINE RECEIVING SUCH BLADES - A turbojet vane, in particular a compressor guide vane, characterized in that the vane comprises the following elements:
| 07-04-2013 |
20130167678 | DEVICE FOR SELECTIVELY CONNECTING A GEARMOTOR TO AN AIRCRAFT WHEEL TO ENABLE THE WHEEL TO BE DRIVEN SELECTIVELY BY THE GEARMOTOR - A device, which connects a gearmotor to an aircraft wheel, comprising: a casing rotatably carrying a shaft driven by the gearmotor, the shaft having a fluted portion on which a gearwheel is mounted to slide along a longitudinal axis of the shaft without rotating relative to the shaft; a toothed ring for constraining to rotate with the aircraft wheel; and means for moving the gearwheel axially between a retracted position (disengaged from the toothed ring) and an engaged position (gearwheel meshes with the toothed ring). The means for moving comprises a hollow screw-and-nut assembly extending around the shaft, one of the elements being axially secured to the gearwheel but prevented from rotating by an anti-rotation member, and the other element of the screw-and-nut assembly being rotatably mounted inside the casing to be driven selectively by an electric motor so that rotating the electric motor causes the gearwheel to move axially. | 07-04-2013 |
20130152772 | PROCESS FOR MANUFACTURING A MECHANICAL MEMBER MADE OF A COMPOSITE HAVING INCREASED MECHANICAL STRENGTH - The invention relates to a method of fabricating a mechanical member, the method including a plurality of operations of braiding and depositing layers of braided reinforcing fibers on a mandrel ( | 06-20-2013 |
20130147210 | LATCHING BOX WITH AN UNLOCKING ACTUATOR HAVING A CYLINDRICAL CAM - The invention relates to a latching box for selectively retaining a movable element such as an undercarriage or a hatch in position, the box comprising a body carrying:
| 06-13-2013 |
20130140399 | MAIN LANDING GEAR OF AN AIRCRAFT, COMPRISING TWO WALKING BEAMS AND A DEFORMABLE PARALLELOGRAM STRUCTURE - An aircraft landing gear, characterized in that it comprises two rocker beams carrying wheels and mounted to pivot on at least one pivot of the landing gear, the landing gear including a shock absorber device comprising two connecting rods coupled to respective ones of the rocker beams, and at least one of the connecting rods being telescopic and forming a shock absorber. The two connecting rods also are coupled to a rocking crossbar pivotally mounted on a central pivot, the pivots of the rocker beams and the central pivot of the crossbar being mounted on a leg that is connected to the fuselage of the aircraft by means of two panels that are hinged to the leg and to the structure of the aircraft about axes that are perpendicular to the hinge axes of the rocker beams and that co-operate with the leg to form a deformable parallelogram system. | 06-06-2013 |
20130133508 | METHOD FOR OPERATING A MACHINE FOR PLAITING REINFORCING FIBERS - The invention relates to a method for the operation of a plaiting machine ( | 05-30-2013 |
20130119197 | A DEVICE FOR UNLOCKING AN UNDERCARRIAGE IN A DEPLOYED POSITION, AND AN UNDERCARRIAGE FITTED WITH SUCH A DEVICE - A simple device for blocking and unblocking the locking member of an undercarriage having a breaker strut and including an unlocking device. The device comprises. a rotary actuator of axis parallel to the hinge axis of the links of the stabilizing member; a crank connected to a shaft of the actuator; a pawl hinged to the end of the crank and including a step; a pin secured to and at a distance from one of the links of the stabilizing member; and return means for urging the pawl towards the pin. The actuator is actuatable between a first angular position in which the pin is in contact with the pawl facing the step while the links are substantially in alignment, and a second angular position that the crank reaches when the step of the pawl has pushed back the pin, taking the links of the stabilizer member out of alignment. | 05-16-2013 |
20130105079 | METHOD FOR PRODUCING A MECHANICAL MEMBER FROM COMPOSITE MATERIAL, HAVING AN IMPROVED MECHANICAL PERFORMANCE UNDER TRACTION-COMPRESSION AND BENDING | 05-02-2013 |
20130098539 | METHOD FOR MANUFACTURING AN ARM IN COMPOSITE MATERIAL COMPRISING A TRANSVERSAL BEARING DESIGNED TO RECEIVE A FIXED OR ROTATING SHAFT - The invention relates to a method for manufacturing an arm ( | 04-25-2013 |
20130092482 | HYDRAULICALLY REGULATED ELECTROMAGNETIC ACTUATOR, AND LANDING GEAR FITTED WITH SUCH AN ACTUATOR FOR CONTROLLING SAME - The present invention relates to an electromechanical actuator comprising an electric motor ( | 04-18-2013 |
20130091969 | DEVICE FOR CONNECTING A GEARMOTOR TO AN AIRCRAFT WHEEL IN ORDER TO ENABLE THE WHEEL TO BE DRIVEN SELECTIVELY BY THE GEARMOTOR - A device for connecting a gear motor to an aircraft wheel, the device comprising: a casing rotatably carrying a shaft that is to be driven by the gear motor, and on which a pinion is mounted idle by means of a rolling bearing; a toothed ring for being constrained in rotation with the aircraft wheel and arranged to mesh permanently with the idle pinion; and rotation securing means for selectively constraining the idle pinion in rotation with the shaft. With this structure, a smooth bearing is interposed between the shaft and the rolling bearing of the idle pinion. | 04-18-2013 |
20130075527 | DEVICE FOR MANOEUVRING, ON THE GROUND, A DOOR OF AN AIRCRAFT LANDING GEAR - The invention relates to a device for manoeuvring, on the ground, a door of an aircraft landing gear, the door being linked with door manoeuvring means and uplock means for locking the door when it reaches the closed position, at least one unlocking electromechanical actuator arranged to act upon the uplock means with a view to deactivating them during opening of the door in flight. According to the invention, the device comprises control means | 03-28-2013 |
20130068884 | MAIN LANDING GEAR OF AN AIRCRAFT, COMPRISING TWO WALKING BEAMS JOINED TO THE STRUCTURE OF THE AIRCRAFT IN AN ARTICULATED MANNER - An aircraft undercarriage comprising two rocker beams ( | 03-21-2013 |
20130062012 | METHOD FOR MAKING AN ARM FOR A HINGED STRUCTURE SUCH AS A ROCKER ARM FOR AN AIRCRAFT LANDING-GEAR STRUCTURE - The invention relates to a method for making an arm for a hinged structure such as an aircraft landing gear structure, this arm comprising a main body ( | 03-14-2013 |
20130020436 | AIRCRAFT LANDING GEAR OF THE ROCKER-ARM AND DEFORMABLE-PARALLELOGRAM TYPE - The invention relates to an aircraft landing gear of deformable-parallelogram type, including:
| 01-24-2013 |
20130015290 | METHOD OF MANAGING THE STEERING OF AIRCRAFT WHEELS, IN PARTICULAR IN THE EVENT OF A TIRE BURSTING OR DEFLATINGAANM BENMOUSSA; MichaelAACI AntonyAACO FRAAGP BENMOUSSA; Michael Antony FRAANM FRAVAL; JeromeAACI Velizy VillacoublayAACO FRAAGP FRAVAL; Jerome Velizy Villacoublay FR - The invention relates to a method of managing the steering of aircraft undercarriage wheels carried by a steerable bottom portion of the undercarriage, the bottom portion being associated with steering control including a steering member suitable for steering the bottom portion of the undercarriage in response to a steering order. According to the invention, the method comprises the steps of:
| 01-17-2013 |
20130008582 | METHOD OF MANUFACTURING AN ELONGATE INSERT MADE OF A METAL MATRIX COMPOSITE - A method of manufacturing an elongate insert configured to be integrated by CIC in a metal container, including coated yarns bonded together, the coated yarns being formed from metal-coated ceramic fibers. The method includes placing the coated yarns side by side in a bundle and pulling the fiber bundle through a shaping element so as to compact the fiber bundle transversely while forming the fiber bundle so as to have a defined cross section. A metal part incorporating a fibrous insert can be manufactured by the CIC technique. | 01-10-2013 |
20130006447 | METHOD FOR MANAGING A BRAKING SYSTEM FOR AN AIRCRAFT FITTED WITH ELECTROMECHANICAL BRAKES - A braking system for an aircraft with electric brakes comprising plural electromechanical actuators ( | 01-03-2013 |
20120330482 | METHOD OF CONTROLLING THE STEERING OF A STEERABLE PORTION OF AN AIRCRAFT UNDERCARRIAGE - The invention relates to a method of controlling the steering of a steerable portion of an aircraft undercarriage that is fitted both with a steering member for steering the steerable portion and also with at least two angular position sensors for sensing the angular position of the steerable portion in order to deliver respective signals representative of the angular position of the steerable portion, wherein the steering member is controlled by means of servo-control using information that is representative of the angular position of the steerable portion. According to the invention, the information representative of the angular position that is used is a mean of the angular positions sensed by the at least two angular position sensors. | 12-27-2012 |
20120326894 | METHOD OF PROTECTING AN AIRCRAFT LANDING GEAR WHILE THE AIRCRAFT IS BEING TOWED, AND PIN FOR COUPLING A TOWING BAR TO AN ORIENTABLE LOWER PART OF A LANDING GEAR - A method of protecting an aircraft undercarriage ( | 12-27-2012 |
20120318441 | METHOD FOR MAKING A CONNECTING ROD MADE OF A COMPOSITE MATERIAL COMPRISING A REINFORCED YOKE - The invention relates to a method for making a connecting rod ( | 12-20-2012 |
20120305702 | DEVICE FOR ROTATIONALLY COUPLING A RING WITH A WHEEL AND AIRCRAFT LANDING GEAR EQUIPPED WITH SUCH A DEVICE - The invention relates to a device ( | 12-06-2012 |
20120304787 | TELESCOPIC ACTUATOR - The invention relates to a telescopic actuator comprising a body ( | 12-06-2012 |
20120292437 | METHOD FOR POWERING AUTONOMOUS DRIVE MOTORS FOR AN AIRCRAFT - The invention relates to a method for powering an autonomous drive device (4) in an aircraft comprising a certain number of drive motors (5) for the wheels (6) when the jet engines of the aircraft are not activated, the aircraft comprising an auxiliary power unit or APU (2) driving a first generator (1) for supplying power to devices on the aircraft that need to be powered when the jet engines are not activated, characterized in that the method comprises the use of a second generator (8) dedicated to the power supply of the autonomous drive device, the second generator being disposed in parallel with the first generator so as to be driven by the APU and, when it operates as a motor under the action of power recovered by the autonomous drive device, so as to help the APU drive at least the first generator. | 11-22-2012 |
20120288946 | NON-DESTRUCTIVE METHOD FOR DETECTING MACHINING BURNS OF A VERY-HIGH-STRENGTH STEEL, AND COLOUR CHART FOR CALIBRATING MACHINING BURNS OF SAID STEEL - A method for efficient, industrialisable detection of machining burns of VHS steel. Machined steel is immersed in an aqueous solution of acids including hydrofluoric acid and nitric acid. To define a burn degree, a color chart for calibrating machining burns of VHS steel detected using the method is prepared. The color chart can include studs of the examined steel subjected to deliberate damage by excessive resurfacing actions (or other machining modes), then submerged in the acid solution. The resurfacing actions can be simulated by overheated thermal treatment, between an ageing temperature (for example 510° C. for steel) and a solution annealing temperature (950° C. for the steel). The samples are classified according to the grey level thereof resulting from the immersion and corresponding to a predetermined hardness and thus to a predetermined level of damage. | 11-15-2012 |
20120279635 | METHODS FOR PRODUCING A PART MADE FROM A COMPOSITE MATERIAL, OBTAINED BY DEPOSITING LAYERS OF REINFORCING FIBERS URGED ONTO A MANDREL - The invention relates to a method of fabricating a composite material part in which one or more layers of braided, or woven, or indeed draped reinforcing fibers are applied onto a mandrel having the general shape of a body of revolution. After one or more layers have been applied onto the mandrel, an operation is performed of winding at least one tie helically around and along the assembly constituted by the mandrel and each layer of reinforcing fibers that it carries, so as to press each layer of reinforcing fibers against the mandrel. The invention relates to fabricating composite material parts such as beams, connecting rods, or arms made out of carbon fibers. | 11-08-2012 |
20120273309 | AIRCRAFT BRAKING SYSTEM ARCHITECTURE - An aircraft braking system architecture having brakes with electromechanical actuators ( | 11-01-2012 |
20120271490 | METHOD FOR DISTRIBUTING BRAKING TORQUE BETWEEN BRAKED WHEELS FITTED TO AT LEAST ONE UNDERCARRIAGE OF AN AIRCRAFT - A method for distributing braking energy between a group of braked wheels 1 . . . p and fitted to N undercarriages of an aircraft, each of the braked wheels comprising a brake furnished with a stack of discs to which a load is selectively applied so as to generate a torque for braking the wheel. Each brake is equipped with means for measuring a thickness of the stack of discs, and in which:
| 10-25-2012 |
20120255961 | METHOD FOR MAKING A COMPOSITE METAL PART HAVING INNER REINFORCEMENTS IN THE FORM OF FIBERS, BLANK FOR IMPLEMENTING SAME AND METAL PART THUS OBTAINED - During implementing a composite metal part by compaction of an insert having reinforcing fibers in a metal body or container, gas used for compaction may enter the cavity formed in the container for receiving the insert between a lid covering the insert and the container, which can prevent or degrade compaction and diffusion welding of fiber sheaths of the insert therebetween and/or with walls of the cavity. To solve this problem, the present method includes initiating isostatic compaction by a phase including raising and maintaining temperature, followed by a phase including hot-feeding pressurized gas, and machining an assembly to obtain the part. The temperature raising phase includes a diffusion pre-welding of material rigidly connecting the pressure-adjusted walls of the lid and the container. The method can be used for designing parts having a tensile and compression resistance, such as parts for aircraft landing gear. | 10-11-2012 |
20120255668 | METHOD FOR MANUFACTURING COMPOSITE PARTS COMPRISING BRAIDED FIBERS - A method of fabricating a composite material part such as a link. The method comprises the successive operations of applying reinforcing fiber layers ( | 10-11-2012 |
20120251744 | METALLIC PART PROVIDED WITH FIBROUS REINFORCEMENTS AND HAVING A BEVELLED EDGE - The invention relates to a mechanical part made from a metal preform presenting at least one housing ( | 10-04-2012 |
20120247318 | HYDRAULIC ACTUATOR WITH AUTOMATIC PURGING AT THE END OF ITS STROKE - A hydraulic actuator comprising a hollow body ( | 10-04-2012 |
20120245742 | METHOD OF CONTROLLING A COOLING DEVICE FOR A MACHINE TOOL - A method of controlling a cooling device for cooling a cutting tool in a machine tool. The method comprising the steps of:
| 09-27-2012 |
20120234431 | METHOD FOR MANUFACTURING A STRAIGHT INSERT MADE OF METAL MATRIX COMPOSITE MATERIAL - A method for manufacturing a straight insert intended to be incorporated in a metal container by HIC includes placing coated wires in a rectilinear juxtaposition over a predefined length in a straight gutter-shaped tool and joining the coated wires together. The insert includes a bundle of coated wires that are joined together and have a predefined length. The wires are made from metal-coated ceramic fibers. | 09-20-2012 |
20120223572 | HYDRAULIC BRAKE ARCHITECTURES FOR AIRCRAFTS FOR BRAKING AT LEAST ONE WHEEL OF THE AIRCRAFT - Aircraft hydraulic parking architecture, including a brake with a wheel braking hydraulic actuator, a pressure source (Alim) of high-pressure fluid, a normal braking hydraulic circuit (C | 09-06-2012 |
20120194165 | METHOD OF LIMITING A CURRENT SUPPLIED BY A DC POWER SUPPLY - The invention relates to a method of limiting a current i | 08-02-2012 |
20120175198 | ELECTROMECHANICAL ACTUATOR WITH DUAL EXCITATION - A braking actuator for a brake of an aircraft, the actuator comprising:
| 07-12-2012 |
20120174700 | METHOD FOR MANUFACTURING A FIBER-REINFORCED METAL CONNECTING ROD, AND RESULTING CONNECTING ROD - The present invention relates to a method of fabricating a metal link rod ( | 07-12-2012 |
20120168562 | DEVICE FOR CONTROLLING TRAPDOORS CLOSING THE HOLD OF AIRCRAFT LANDING GEAR - A device for driving at least one door ( | 07-05-2012 |
20120138742 | METHOD OF CONTROLLING A BRUSHLESS DC MOTOR - The invention relates to a method of powering at least one brushless DC electric motor having a plurality of phases for powering, the method including the steps of associating a static contactor with the motor for taking input voltage pulses and delivering polyphase voltage pulses to the motor in a manner that is servo-controlled to the angular position of the rotor of the motor, and for generating from a DC voltage source voltage pulses of frequency that is fixed and at a duty ratio that is controllable, thereby forming the input voltage pulses to the static contactor. | 06-07-2012 |
20120138735 | DEVICE FOR BRAKING/DRIVING AN AIRCRAFT WHEEL - The invention relates to a device for braking/driving an aircraft wheel mounted tO rotate on an undercarriage axle, the device comprising: a stack of disks comprising disks that are constrained in rotation with the wheel and that alternate with disks that are constrained in rotation with a torsion tube; a support member mounted to rotate on the axle and constrained in rotation with the torsion tube; braking actuators carried by the support member for selectively pressing the disks together; and a drive member for selectively driving the support member in rotation; the support member carrying a secondary of a transformer having a primary arranged facing the support member while being stationary in rotation, the secondary being electrically connected to the actuators and the primary being adapted to being connected to a non-DC voltage source. | 06-07-2012 |
20120137802 | ELECTROMECHANICAL TELESCOPIC ACTUATOR - The invention relates to a telescopic actuator comprising:
| 06-07-2012 |
20120131778 | TOOL FOR REMOVING ANNULAR ELEMENTS TIGHTLY MOUNTED IN HOLES, IN PARTICULAR BLIND HOLES, OF PARTS - A removal tool which exerts an axial pull on an annular element including a tie rod with a widened end head adapted to be inserted in the coaxial passage of the annular element, beyond the annular element, and a mechanism for engaging with the element in a form of an annular cage with lateral prongs capable of deforming elastically in the radial direction, passing through the axial passage to engage via the elastic prongs thereof with the distal transverse surface of the element and to allow the element to be removed by the engagement of the widened head with the prongs, following the axial movement of the tie rod outside of the hole by a control mechanism. | 05-31-2012 |
20120131775 | METHOD OF MAKING A THREE-DIMENSIONAL FIBER PREFORM FOR FABRICATING AN ANNULAR PART OUT OF CARBON/CARBON COMPOSITE MATERIAL - A method of making a three-dimensional fiber preform for fabricating an annular part out of carbon-carbon composite material, the method including stacking layers of a fiber sheet made up of carbon yarns or tows, needling the layers one by one as they are superposed so as to bond them together, and locally modifying the electromagnetic properties of the fiber preform by increasing the fiber density of the layers of the fiber sheet that are situated at half-thickness of the fiber preform. | 05-31-2012 |
20120124838 | METHOD OF FABRICATING A METAL PART INCLUDING FIBROUS ANNULAR REINFORCEMENT - A method reinforcing an axisymmetric annular metal part by including a winding of composite material. A metal blank for the part is prepared, a cavity is formed therein that opens out into a coaxial inside face thereof, and that presents a right cross-section of axial extent that decreases from the inside towards the outside, a reinforcing yarn is wound in the cavity, the cavity is closed, the assembly is subjected to a hot isostatic compression process, and the blank is machined to obtain a final part. | 05-24-2012 |
20120112000 | NOSE GEAR OF AN AIRCRAFT COMPRISING A SINGLE CONTROL DEVICE FOR RETRACTION AND STEERING - A landing gear of an aircraft, including a strut including two arms forming a rotational axis for retracting the gear, a rotating tube mounted in a mobile manner such that it rotates inside the strut about a pivoting axis, a sliding rod that is mobile in a translatory manner in the rotating tube along the pivoting axis, and carries wheels of the gear at one of its ends, and at least one bearing point that is located on one of the elements of the gear at a distance from the retraction axis and can bear necessary efforts for the retraction, the bearing point being located on the rotating tube. | 05-10-2012 |
20120103502 | METHOD FOR MANUFACTURING A COMPOSITE MATERIAL CONNECTING ROD HAVING REINFORCED ENDS - In the field of aviation, a method of fabricating a composite-material rod. The method comprises a first step of fabricating a mandrel comprising a sleeve of composite material and solid inserts of composite material secured to the ends of said sleeve to constitute a rigid whole. Then, one or more layers of braided fibers are applied around the mandrel by using a fiber-braiding machine. Next, a resin is injected into the layers of braided fibers so as to establish cohesion rigidly bonding the braided fiber layers and at least the ends of the mandrel in order to form a rod body out of composite material having reinforced ends. Finally, respective holes are drilled at each end of the rod body, each hole passing through the layers of braided fibers and also through the corresponding insert. | 05-03-2012 |
20120097792 | HYDRAULIC CIRCUIT FOR ACTUATING AN UNDERCARRIAGE, AND METHODS OF DEPLOYING AND RAISING AN UNDERCARRIAGE USING SUCH A CIRCUIT - A hydraulic circuit for actuating an undercarriage, the circuit comprising: a feed line for feeding fluid and a return line; at least one door selector connected to the feed and return lines, the selector feeding door service lines, including an opening line and a closing line for opening and closing the doors; at least one undercarriage selector connected to the feed and return lines, feeding undercarriage service lines including a deployment line and a raising line for deploying and raising the undercarriage; and a door unhooking line and an undercarriage unhooking line. The door unhooking line is connected to at least one undercarriage service line while the undercarriage unhooking line is connected to at least one door service line, the circuit also including means for connecting the door service lines together during a door opening stage, and means for connecting the undercarriage service lines together during an undercarriage deployment stage. | 04-26-2012 |
20120097480 | DEVICE FOR REDUCING AERODYNAMIC NOISE FROM AN AIRCRAFT UNDERCARRIAGE - In the field of aviation, a device for limiting aerodynamic noise from a deployed aircraft undercarriage during landing and/or takeoff. The device comprises two end plates ( | 04-26-2012 |
20120091264 | SELECTIVE FORCE TRANSMISSION DEVICE AND AN UNDERCARRIAGE CONSISTING OF AN APPLICATION THEREOF - The invention relates to a device for selectively transmitting force, the device comprising a first element and a second element that is movably mounted on the first element, a friction member being arranged between the first element and the second element to exert a friction force between them, which force presents a maximum value that depends on prestress imparted by a presser member. The device includes control means for varying the prestress imparted by the presser member to the friction member and arranged, where appropriate, to substantially release the prestress imparted by the presser member so that the prestress becomes substantially zero. | 04-19-2012 |
20120080559 | METHOD FOR OPERATING A LANDING GEAR ASSEMBLY WITH A BREAKER STRUT - A method of operating an aircraft landing gear between a deployed position and a retracted position. The landing gear comprises a leg hinged to the aircraft, the leg being stabilized in the deployed position by a folding strut comprising two hinged-together links, the strut being held in an aligned position by a stabilizer member comprising two hinged-together links themselves held in alignment by a locking member. The method comprises the steps of arranging the strut ( | 04-05-2012 |
20120072057 | METHOD OF MANAGING MOVEMENT OF AN AIRCRAFT ON THE GROUND - The invention relates to a method of managing movement of an aircraft on the ground, the aircraft including at least one left main undercarriage and at least one right main undercarriage, each comprising wheels associated with torque application members for applying torque to the wheels in response to a general setpoint, the general setpoint comprising a longitudinal acceleration setpoint and an angular speed setpoint, the method including the successive steps of braking down the general setpoint into general torque setpoints for generating by the torque application members associated with each of the wheels. | 03-22-2012 |
20120046834 | METHOD OF CONTROLLING THE YAWING MOVEMENT OF AN AIRCRAFT RUNNING ALONG THE GROUND - The invention relates to a method of controlling a yawing movement of an aircraft running along the ground, the aircraft comprising at least one first landing gear with a steerable bottom part bearing wheels. According to the invention, the method comprises the steps of:
| 02-23-2012 |
20110315744 | METHOD FOR MAKING A METAL CONNECTING ROD REINFORCED WITH LONG FIBERS - The invention relates to a method of fabricating a connecting rod, the method including: fabricating a body ( | 12-29-2011 |
20110315495 | CONTROLLED-FRICTION SLIDING DEVICE, SUCH AS A DAMPER, WHICH CAN OPERATE IN TWO DIRECTIONS - The invention relates to a controlled-friction device comprising first and second elements ( | 12-29-2011 |
20110311171 | CONTROLLED-FRICTION LINEAR DEVICE IN WHICH A PRESS FORCE IS APPLIED PERPENDICULAR TO THE MOVEMENT - A controlled-friction device comprising a first element having a second element mounted thereon to slide in a sliding direction, and friction retaining means arranged to exert between the two elements an opposing force against relative movement of the two elements. The friction retaining means comprises a friction member mounted securely to the first element to rub against the second element via a friction surface extending parallel to the sliding direction, a presser member for exerting a thrust force on the friction member, urging the friction member against the second element in a direction normal to the relative movement of the elements, and a link means linking the friction member to the first element causing the friction member to separate from the second element during movement in either direction of the second element relative to the first element. | 12-22-2011 |
20110308906 | MECHANICAL DEVICE FOR THE TRANSMISSION OF A FORCE WITH A THRESHOLD - The invention relates to a mechanical transmission device for transmitting a threshold force, the device comprising a first element ( | 12-22-2011 |
20110304292 | INDEPENDENT DRIVE DEVICE FOR AN AIRCRAFT - The invention relates to an independent drive device for an aircraft, the drive device comprising a motor member, drive means for driving an aircraft wheel in rotation, which means are adapted to co-operate with said wheel to drive it in rotation, and coupling means interposed between the motor member and the drive means to selectively couple the wheel to the motor member, the coupling means comprising two coupling members of complementary shape, comprising a first coupling member constrained to rotate with the drive means and a second coupling member constrained to rotate with the motor member. The independent drive device includes measurement means for generating information representative of a relative speed of rotation of the second coupling member relative to the first coupling member, the device being associated with motor control means adapted to cause the motor to rotate so as to cancel the relative speed of rotation between the coupling members prior to coupling them together. | 12-15-2011 |
20110303785 | AIRCRAFT FITTED WITH AN INDEPENDENT DRIVE DEVICE - The invention relates to an aircraft having wheels fitted with hydraulically-actuating friction brake means and also hydraulically-actuated independent drive means for driving the wheels in rotation and enabling the aircraft to move in stages of independent drive in which the engines of the aircraft are inactive, wherein the aircraft is fitted simultaneously with a main hydraulic circuit including a pressure source that powers the brake means when said pressure source is active; with an alternative braking circuit for enabling brake means to be actuated at least when the engines of the aircraft are stopped, the alternative braking circuit including an accumulator that is normally used for parking braking and that is kept under pressure by the pressure source of the main circuit when said pressure source is active; and with an auxiliary hydraulic circuit pressurized by auxiliary pump means activated by an auxiliary power unit of the aircraft to enable the independent drive means to be actuated; the auxiliary hydraulic circuit being connected to the alternative braking circuit to maintain an operating pressure in the accumulator of the alternative braking circuit. | 12-15-2011 |
20110297262 | HYDRAULIC VALVE - The invention relates to a hydraulic valve comprising a body in which a bore is formed in order to receive a sleeve that includes sealing seats that cooperate with a wall of the bore to define hydraulically isolated chambers that are connected to hydraulic ports in the body, the sleeve including connection holes in order to connect at least certain chambers with the inside of the sleeve and receiving a movable element that is slidable between two end positions in order to slide in leaktight manner against an inside wall of the sleeve, wherein the sleeve includes at least one regulator hole that opens out inside the sleeve in such a manner as to be the first bore to be uncovered or the last bore to be blocked by one of the fitted portions of the movable element when said element slides from one position to another, said fitted portion having at least one face portion that presents a setback that passes over the regulator hole. | 12-08-2011 |