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1
US10161446B2
Publication/Patent Number: US10161446B2
Publication date: 2018-12-25
Application number: 15/528,143
Filing date: 2015-11-17
Abstract: A mechanical assembly includes two mechanical parts rotatable relative to each other. A first part is provided with a cylindrical cavity, a second part (34) has at least one cylindrical portion engaged in the cylindrical cavity of the first part, and a gap separates the cylindrical portion and the wall of the cylindrical cavity so as to allow relative movement in rotation between the first part and the second part (34). A lubricant distribution network (37, 38) is configured for feeding the gap with a fluid lubricant so as to form a fluid bearing. A first surface (34s) selected from the inside surface of the cylindrical cavity of the first part and the outside surface of the cylindrical portion of the second part is provided with at least two lubricant admission orifices. A mechanical assembly includes two mechanical parts rotatable relative to each other. A first part is provided with a cylindrical cavity, a second part (34) has at least one cylindrical portion engaged in the cylindrical cavity of the first part, and a gap separates the ...more ...less
2
US10126228B2
Publication/Patent Number: US10126228B2
Publication date: 2018-11-13
Application number: 15/524,499
Filing date: 2015-11-06
Abstract: A device to test the peeling resistance of coupons, each formed of a support and an adhesive, includes: (i) a frame including rollers with parallel axes designed to maintain the coupon supported while guiding movement of the latter, (ii) a traction device including a vertical jack linked to an attachment element including a loop configured in order to cause detachment of the adhesive from the surface of the support, (iii) a device for measuring the force exerted by the jack in order to pull the loop during peeling, and (iv) a coupon, complex in shape, such as one derived from a reinforced vane. At least one roller is translationally adjustable in relation to other rollers and the coupon is specially prepared in order to facilitate carrying out the tests. A device to test the peeling resistance of coupons, each formed of a support and an adhesive, includes: (i) a frame including rollers with parallel axes designed to maintain the coupon supported while guiding movement of the latter, (ii) a traction device including a vertical ...more ...less
3
US10112330B2
Publication/Patent Number: US10112330B2
Publication date: 2018-10-30
Application number: 15/113,992
Filing date: 2015-01-27
Abstract: A mold (10) comprising a plurality of blocks (11, 13) that, in an assembled position, define a mold cavity, the mold being characterized in that it includes at least one pusher (21), said pusher (21) being configured to be housed in a first block (11) of said plurality, in a side facing the mold cavity, and, when the pusher (21) is housed in said first block (11), to present a first surface (S1) flush with the mold cavity, and in that the mold (10) also includes actuator means (23, 25) enabling the pusher (21) to be moved relative to the first block (11), and sealing means (19, 27) configured to isolate the actuator means (23, 25) from the mold cavity. An associated molding method. A mold (10) comprising a plurality of blocks (11, 13) that, in an assembled position, define a mold cavity, the mold being characterized in that it includes at least one pusher (21), said pusher (21) being configured to be housed in a first block (11) of said plurality, in a ...more ...less
4
US10073050B2
Publication/Patent Number: US10073050B2
Publication date: 2018-09-11
Application number: 15/524,950
Filing date: 2015-11-04
Abstract: An assembly comprising an upstream pipe, a downstream pipe, and a system (1) for measuring variation in the gas content of a two-phase flow, the assembly including: an insulating sheath (6), an upstream ground (2), a measurement electrode (3), a guard electrode (7), and a downstream ground (4) arranged in succession in the insulating sheath (6) and each presenting an identical internal section defining an internal flow duct for a two-phase flow from the upstream ground (2) towards the downstream ground (4) in line with the upstream pipe and the downstream pipe, the guard electrode (7) being subjected to the same potential as the measurement electrode (3), the measurement electrode (3) measuring the capacitance of the two-phase flow relative to the upstream ground (2) and variation in that capacitance, the upstream ground (2) and the downstream ground (4) being electrically connected to the upstream pipe and to the downstream pipe, respectively. An assembly comprising an upstream pipe, a downstream pipe, and a system (1) for measuring variation in the gas content of a two-phase flow, the assembly including: an insulating sheath (6), an upstream ground (2), a measurement electrode (3), a guard electrode (7), and a ...more ...less
5
US10101300B2
Publication/Patent Number: US10101300B2
Publication date: 2018-10-16
Application number: 14/903,155
Filing date: 2014-06-26
Inventor: Chatenet, Luc Henri  
Abstract: A device for inspecting a surface of an electrically conductive part, the device having a plurality of eddy current probes arranged on a convex surface of the device together with an applicator for applying the probes against the surface to be inspected into which the device is inserted, wherein the probes are fastened on flexible strips extending beside one another in a longitudinal direction of the device, the applicator including a deformable material, that, on being compressed along the longitudinal direction, gives rise to expansion transversely to the longitudinal direction, the expansion deforming the strips so as to apply the probes against the surface. A device for inspecting a surface of an electrically conductive part, the device having a plurality of eddy current probes arranged on a convex surface of the device together with an applicator for applying the probes against the surface to be inspected into which the device is ...more ...less
6
US10023328B2
Publication/Patent Number: US10023328B2
Publication date: 2018-07-17
Application number: 15/312,421
Filing date: 2015-05-13
Abstract: A space vehicle engine (10) comprising a chemical thruster having a nozzle (30) for ejecting combustion gas, together with a Hall effect thruster. The engine is arranged in such a manner that the nozzle serves as the ejection channel for particles ejected by the Hall effect thruster when it is in operation. The engine can deliver high thrust with low specific impulse or relatively low thrust with large specific impulse. A space vehicle engine (10) comprising a chemical thruster having a nozzle (30) for ejecting combustion gas, together with a Hall effect thruster. The engine is arranged in such a manner that the nozzle serves as the ejection channel for particles ejected by the Hall effect ...more ...less
7
US09863325B2
Publication/Patent Number: US09863325B2
Publication date: 2018-01-09
Application number: 15/306,913
Filing date: 2015-04-27
Abstract: An assembly for an aircraft turbine engine, including a rolling bearing bracket defining an inner space on either side thereof; a rotary assembly including a first gear; a housing for drawing mechanical power including a second gear mating with the first gear; a shaft for drawing mechanical power, inserted into the housing and rotated by the second gear, the shaft passing through a first opening of the bracket. The assembly includes a mounting device for mounting the housing on the bearing bracket, the mounting device passing through a second opening via the bracket, the mounting device passing through a second opening via the bracket, the second opening being configured so as to allow the housing to be inserted into the space. An assembly for an aircraft turbine engine, including a rolling bearing bracket defining an inner space on either side thereof; a rotary assembly including a first gear; a housing for drawing mechanical power including a second gear mating with the first gear; a shaft for ...more ...less
8
US10132177B2
Publication/Patent Number: US10132177B2
Publication date: 2018-11-20
Application number: 14/893,332
Filing date: 2014-05-28
Abstract: A hollow vane, includes a main portion, of which the cavity is closed by a cover, that is produced by expanding the main portion relative to the cover, for example by means of differential thermal expansion, then by placing the cover at the bottom of the opening of the cavity, before allowing the main portion to close again, closing a nesting between a protrusion at the bottom of the cover and a widening at the bottom of the opening. The disadvantages linked to the use of welding, glue or even assembly parts are as such avoided. A hollow vane, includes a main portion, of which the cavity is closed by a cover, that is produced by expanding the main portion relative to the cover, for example by means of differential thermal expansion, then by placing the cover at the bottom of the opening of the cavity ...more ...less
9
US10138897B2
Publication/Patent Number: US10138897B2
Publication date: 2018-11-27
Application number: 14/778,317
Filing date: 2014-03-18
Inventor: Cellier, Damien  
Abstract: The invention relates to a compressor blade, defined at each one of the points of its surface by a sweep angle and a dihedral angle, comprising: a root, a tip, the distance between the root and the tip, measured along an axis referred to as the radial axis, perpendicular to an axis of rotation of the compressor, being referred to as radial height (h), a zone, between the root and the tip, of which a first portion has a strictly positive leading edge dihedral angle, and a second portion has a strictly negative leading edge dihedral angle, the zone of maximum dihedral angle being, along the radial axis, between r=0.25 h and r=0.7 h. The invention relates to a compressor blade, defined at each one of the points of its surface by a sweep angle and a dihedral angle, comprising: a root, a tip, the distance between the root and the tip, measured along an axis referred to as the radial axis, perpendicular to an ...more ...less
10
US10139110B2
Publication/Patent Number: US10139110B2
Publication date: 2018-11-27
Application number: 15/259,803
Filing date: 2016-09-08
Abstract: A turbomachine combustion chamber, comprises a fuel injector nozzle and an injection system. The injection system comprises a sliding traverse, means for maintaining the sliding traverse and a supporting sole for the sliding traverse. The injection system comprises means for recalling the sliding traverse configured to stress the supporting sole against axial displacements of the sliding traverse relatively to the means for maintaining. The outer connection surface of the injector nozzle and/or at least one portion of the internal centring surface of the sliding traverse narrow in the downstream direction, in such a way as to retain the injector nozzle relatively to the sliding traverse axially in the downstream direction. A turbomachine combustion chamber, comprises a fuel injector nozzle and an injection system. The injection system comprises a sliding traverse, means for maintaining the sliding traverse and a supporting sole for the sliding traverse. The injection system comprises means for ...more ...less
11
US10077677B2
Publication/Patent Number: US10077677B2
Publication date: 2018-09-18
Application number: 14/721,555
Filing date: 2015-05-26
Abstract: A holding device of a cooling tube for a turbojet casing, the holding device including a first plate configured to be arranged in integral contact with a turbojet casing; a second plate, the first and second plates having a gap therebetween; a first spacer and the second spacer which are arranged between the first plate and the second plate and defining the gap between the first and second plates, the first and second spacers having a spacing therebetween suitable for passing the cooling tube. A holding device of a cooling tube for a turbojet casing, the holding device including a first plate configured to be arranged in integral contact with a turbojet casing; a second plate, the first and second plates having a gap therebetween; a first spacer and the second spacer ...more ...less
12
US10077742B2
Publication/Patent Number: US10077742B2
Publication date: 2018-09-18
Application number: 15/034,662
Filing date: 2014-10-24
Abstract: A technical test method for evaluating at least one operating parameter of a device over a sequence of a plurality of operating stages, each stage corresponding to a stable value of at least one operating setpoint of the device. The method including at least sampling values of the at least one operating parameter over time, filtering the sampled values in order to obtain a filtered signal for each operating parameter, calculating the variance of the sampled values for each operating parameter in a sampling window during the operating stage, calculating the absolute value of the time derivative of the filtered signal for each operating parameter, and changing the value of the at least one operating setpoint when, for each operating parameter, the variance of the sampled values and the absolute value of the time derivative of the filtered signal are less than respective predetermined lower thresholds. A technical test method for evaluating at least one operating parameter of a device over a sequence of a plurality of operating stages, each stage corresponding to a stable value of at least one operating setpoint of the device. The method including at least sampling values of ...more ...less
13
US10155260B2
Publication/Patent Number: US10155260B2
Publication date: 2018-12-18
Application number: 14/913,050
Filing date: 2014-08-25
Abstract: A shaping method making use of shaper tooling suitable for high-temperature shaping of a preformed metal part having two side fins extending from a nose, the method including putting the preformed metal part into place in a first bottom die of the tooling, holding the preformed metal part in a first determined position with a first movable central insert, forming one of the side fins of the preformed metal part into its final shape in alignment with the nose by moving with a first movable top die, turning over the preformed metal part, putting the preformed metal part into place in a second bottom die of the tooling, holding the preformed metal part in a second determined position with a second movable central insert, and shaping the other side fin into its final shape in alignment with the nose by moving with a second movable top die. A shaping method making use of shaper tooling suitable for high-temperature shaping of a preformed metal part having two side fins extending from a nose, the method including putting the preformed metal part into place in a first bottom die of the tooling, holding the preformed ...more ...less
14
US10145260B2
Publication/Patent Number: US10145260B2
Publication date: 2018-12-04
Application number: 14/896,263
Filing date: 2014-06-04
Inventor: Armange, Frantz  
Abstract: A turbomachine including an accessory drive case, connected to the engine shaft via a radial shaft, wherein the accessory drive case also includes: a primary shaft which is driven by the radial shaft via a bevel gearbox, and assemblies for mechanically driving accessories, driven by the primary shaft and configured such that the related accessories lie at the upper portion and on at least one of the side edges of the engine case. A turbomachine including an accessory drive case, connected to the engine shaft via a radial shaft, wherein the accessory drive case also includes: a primary shaft which is driven by the radial shaft via a bevel gearbox, and assemblies for mechanically driving accessories ...more ...less
15
US10145305B2
Publication/Patent Number: US10145305B2
Publication date: 2018-12-04
Application number: 14/652,999
Filing date: 2013-12-09
Abstract: A fuel circuit of a turbomachine, this circuit including a fuel return valve connected to the main fuel circuit and to a tank, the valve being able to take a first and a second open position, separate from one another, and a closed position, two primary hydraulic lines connecting the valve to the main circuit and including, respectively, first and second filters through which the fuel passes when the valve is in its first open position, two secondary hydraulic lines which connect the valve to the main circuit and which are positioned in relation to the first and second filters in such a way that the circulation of fuel in these secondary lines contributes, respectively, to the cleaning of the first and second filters, the fuel circulating in the secondary lines when the valve is in its second open position. A fuel circuit of a turbomachine, this circuit including a fuel return valve connected to the main fuel circuit and to a tank, the valve being able to take a first and a second open position, separate from one another, and a closed position, two primary hydraulic lines ...more ...less
16
US10127257B2
Publication/Patent Number: US10127257B2
Publication date: 2018-11-13
Application number: 14/897,561
Filing date: 2014-06-06
Abstract: A method of creating a database of operating states of an aircraft fleet, in which a computer executes the steps of acquiring parameters wherein a state of operation of an aircraft of the aircraft fleet; acquiring at least one item of degradation information indicative of a level of degradation of at least one aircraft from among the fleet of aircraft; storing series of parameters in said database, each series of parameters including parameters wherein a state of operation of one of the aircraft and if the item of degradation information has been acquired, at least one item of degradation information indicative of a level of degradation of the aircraft. A method of creating a database of operating states of an aircraft fleet, in which a computer executes the steps of acquiring parameters wherein a state of operation of an aircraft of the aircraft fleet; acquiring at least one item of degradation information indicative of a ...more ...less
17
US10084194B2
Publication/Patent Number: US10084194B2
Publication date: 2018-09-25
Application number: 14/442,868
Filing date: 2013-11-06
Abstract: The invention relates to an installation (100) comprising: a power module having a fuel cell (12) and a reformer (14a), the fuel cell including a heat removal loop (24); and an absorption heat engine (40) having a first boiler (42), a condenser (46), an evaporator (48), and an absorber (50). According to the invention, a heat exchange circuit (42a) of the first boiler is inserted in the heat removal loop of the fuel cell. Furthermore, in the invention, the installation has a closed liquid circuit (10), which circuit comprises at least one heat exchanger (26, 28, 30, 32) having a heating circuit thermally coupled to the power module and a heated circuit inserted in said circulation circuit, said circulation circuit exchanging heat with said heating circuit, heating the liquid of the circulation circuit. Finally, in the invention, a heat exchange circuit (48a) of the evaporator is inserted in said closed liquid circulation circuit. The invention relates to an installation (100) comprising: a power module having a fuel cell (12) and a reformer (14a), the fuel cell including a heat removal loop (24); and an absorption heat engine (40) having a first boiler (42), a condenser ...more ...less
18
US10094291B2
Publication/Patent Number: US10094291B2
Publication date: 2018-10-09
Application number: 15/304,212
Filing date: 2015-04-14
Abstract: A geared fuel pump (4′) operates to supply a determined flow but at low or zero pressure rise. It is planned to add gland packing (46) between support bearings (19) of the pinions (11), or between some of them, to provide hydrodynamic lift for these bearings, by delimiting a closed cavity (47) to provide lift by a fluid with better viscosity properties instead of using the fluid itself that is pumped. Possible application to fuel pumps for aircraft engines, in which the pump (4′) is a high pressure pump associated with a low pressure pump. A geared fuel pump (4′) operates to supply a determined flow but at low or zero pressure rise. It is planned to add gland packing (46) between support bearings (19) of the pinions (11), or between some of them, to provide hydrodynamic lift for these bearings, by ...more ...less
19
US10094740B2
Publication/Patent Number: US10094740B2
Publication date: 2018-10-09
Application number: 14/506,901
Filing date: 2014-10-06
Abstract: A system of non-regression tests of a designing tool including modules used to build a monitoring device of an aircraft engine is provided. The system includes a processor configured to automatically create an experience base by instrumenting behavior tests upon executing the modules, the experience base including reference input signals, sets of reference parameters, reference output signals, and collections of results of reference executions relating to the modules; start again the behavior tests on the modules depending on the corresponding reference input signals and the corresponding sets of reference parameters thus generating test output signals and collections of results of test executions; and compare the test output signals with the corresponding reference output signals and the collections of results of test execution with the corresponding collections of results of reference executions in order to test the non-regression of the designing tool. A system of non-regression tests of a designing tool including modules used to build a monitoring device of an aircraft engine is provided. The system includes a processor configured to automatically create an experience base by instrumenting behavior tests upon executing the ...more ...less
20
US10100658B2
Publication/Patent Number: US10100658B2
Publication date: 2018-10-16
Application number: 14/766,300
Filing date: 2014-02-06
Abstract: An impeller for a turbine engine is disclosed, such as a turbojet engine or a turboprop engine of an aircraft, for rotating about an axis of rotation in a predetermined direction of rotation and for having a flow of gas passing therethrough, comprising a series of blades distributed circumferentially about the axis of rotation of the wheel, the radially external end of each blade comprising a heel supporting at least one radially external lip, extending circumferentially in an oblique direction relative to the radial plane perpendicular to the axis of rotation, the lip being angled circumferentially in the downstream direction in the aforementioned direction of rotation such as to enable a compression of the gases located upstream from the lip during the rotation of the impeller. An impeller for a turbine engine is disclosed, such as a turbojet engine or a turboprop engine of an aircraft, for rotating about an axis of rotation in a predetermined direction of rotation and for having a flow of gas passing therethrough, comprising a series of blades ...more ...less