Abstract: A stator member includes two circumferentially adjacent stator vanes each having a vane body extending radially from an annular wall centered on the longitudinal axis, the stator member having a fin arranged circumferentially between the two stator vanes. The annular wall includes a recess open onto a radially outer surface of the annular wall and at a distance from the upstream and downstream edges of the annular wall, the fin having a root with a shape matching the recess configured to be removably arranged in the recess, and a fin body which extends radially from the root and which is elongate in a direction of elongation substantially parallel to the longitudinal axis.

Abstract: A process for inspecting a part, which process is implemented in an optical system configured to analyse parts of birefringent major phase, is proposed. The process includes emitting an incident beam towards a surface of the part, linearly polarising the incident beam along a first polarisation axis and transmitting a polarised incident beam onto the surface, linearly polarising the reflected beam, resulting from the reflection of the polarised incident light beam by the surface, along a second polarisation axis perpendicular to the first axis, and transmitting a polarised reflected beam, obtaining an image representative of reflections on the surface, determining whether at least one area, referred to as “light area”, of the image has a luminous intensity greater than a predefined threshold, and detecting a defect when the light area satisfies a predefined geometric criterion.

Abstract: A method for predicting information on the friction of an aircraft landing runway, the method including, for a given point in time: obtaining runway context data, obtaining historical friction information data for the runway, comprising data that are all older than the given point in time, predicting using a prediction model configured to receive, as input, at least the context data for the given point in time and the historical friction information data, and to deliver predicted friction information for the runway at the given point in time.

Abstract: A fibrous texture for a blade has a three-dimensional weave between a first plurality of yarn layers and a second plurality of yarn layers, includes a blade aerofoil part extending between a first edge and a second edge. The texture includes a first part with at least three yarn layers of the first plurality of yarns and at least three yarn layers of the second plurality of yarns. Yarns of the two yarn layers of the first plurality of yarns bind yarns of the second plurality of yarns to the two yarn layers of the second plurality of yarns with a determined binding frequency.

Abstract: A method for manufacturing turbomachine disks is provided. The method includes: providing a nickel alloy powder; and shaping the powder to obtain a disk. Providing a powder can include: manufacturing a nickel alloy electrode by PAM-CHR; atomizing a nickel alloy by EIGA from the nickel alloy electrode, leading to a raw powder; and sifting the raw powder under inert atmosphere or under vacuum with a granulometric cut-off between 150 ?m and 50 ?m, leading to the nickel-based alloy powder. In some examples, the granulometric cut-off can be between 125 ?m or 75 ?m.

Abstract: Method for the manufacture of at least one skin, in particular of an acoustic panel for an aeronautical engine, including the laying of a thermoplastic material on a surface of a lay-up tooling, via a depositing tool configured to exert a pressure on the thermoplastic material and to heat the latter while it is being laid, wherein the lay-up tooling includes a thermal regulation device configured to locally heat the surface of the lay-up tooling.

Abstract: A navigation assistance method comprising predicting a position of an agent, said prediction comprising: —acquiring a set of measurements (20) linked to the displacement of said agent; and —determining the position by calibrating an extended Kalman filter applied to the set of measurements (20), wherein the calibration comprises a quantification of a divergence with respect to a current distribution of the uncertainties associated with the measurements.

Abstract: The present invention relates to a method for controlling an electrical system, comprising: processing a main command signal (IP) for commanding drawing of a mechanical power by the electrical system from an electrically hybridized turbomachine so as to extract from said signal a first frequency component (CF1) corresponding to a natural frequency of a first rotary body of the turbomachine and to generate a filtered first main signal (IF1) without the first frequency component (CF1); generating a first subsidiary command signal (CTRL_1) for commanding drawing of a mechanical power by the electrical system from the first rotary body based on the filtered first main signal (IF1); and generating a second subsidiary command signal (CTRL_2, CTRL_3) for commanding drawing of a power by the electrical system from an auxiliary power source based on the first frequency component (CF1).

Abstract: Method for checking the compliance of a workpiece, comprising the following steps: estimating a risk of non-compliance of characteristic on the basis of a law of probability associated with the characteristic; and verifying whether the estimated risk of non-compliance satisfies a decision criterion and, if so, declaring that the workpiece is compliant for characteristic; if not, measuring a value of the characteristic, determining whether or not the workpiece is compliant based on the measured value, and updating the law of probability associated with characteristic based on the measured value.

Abstract: A method for determining a weaving map of a zone of a part to be manufactured in a woven composite material, includes receiving a representation of the zone of the part; receiving predefined values of parameters relating to manufacturing constraints in the zone of the part; determining, from the representation and from a first subset of values from among the received predefined values, a weaving grid of the zone of the part, the weaving grid including a plurality of cells; and successively determining, for each cell of the weaving grid, a respective weaving composition compatible with a second subset of values from among the received predefined values.

Abstract: An apparatus for providing energy in an aircraft, including a DC bus; at least one low-pressure electrical source and at least one high-pressure electrical source. The apparatus further includes a system for calculating a droop gain for each electrical source, based on at least one operating characteristic of the turbine engine; and for each electrical source, a model for controlling the electrical source in question, which module is designed to implement a droop setting based on the droop gain calculated for the electrical source in question.

Abstract: A method for inspecting the surface finish of a cast part made of single-crystal metal, the surface of the part potentially containing defects resulting from an inhomogeneity of orientation of at least a crystal lattice of the single-crystal metal, the method including acquiring, using an image-acquiring device, a series of images of the cast part illuminated by a polarized and collimated illuminating device, then analysing the series of images by an image-processing device, each image of the series of images being taken at a different polarization angle.

Abstract: metal blade including a first part and a second part each made of different materials, and the method including: a first heat treatment at a first temperature, the first heat treatment being undergone by only the first part of the metal blade, and a second heat treatment at a second temperature lower than the first temperature, the second heat treatment being undergone by the second part of the metal blade.

Abstract: The invention relates to a nickel-based superalloy comprising in weight percentages: 5.0 to 6.0% of aluminium, 6.0 to 9.0% of tantalum, 1.0 to 5.0% of cobalt, 5.0 to 7.5% of chromium, 0 to 1.0% of molybdenum, 4.0 to 6.0% of tungsten, 0.50 to 3.5% of rhenium, 1.0 to 4.0% of platinum, 0.05 to 0.25% of hafnium, 0 to 0.15% of silicon, the remainder consisting of nickel and unavoidable impurities. The invention also relates to a single-crystal blade comprising such an alloy and to a turbomachine comprising such a blade.

Abstract: An electrical system for a gas turbine engine includes a power supply bus, first and second converters, and a monitoring device connected to the first and second converters. The monitoring device receives a monitoring signal representative of a correction associated with a difference between a measurement of a voltage of the bus and a reference, performs a frequency filtering of the monitoring signal to determine low and high frequency components, pilots the first converter to compensate for a change in a voltage of the bus and being implemented from a first part of the low-frequency component and a first part of the high-frequency component, and pilots the second converter to compensate for the change in the voltage of the bus and being implemented from a second part of the low-frequency component and a second part of the high-frequency component.

Abstract: An electrically interconnecting member configured to electrically join a printed circuit board belonging to a mechanical part to a piece of electrical equipment. The printed circuit board comprising output tracks. The electrically interconnecting member comprising: a contact surface configured to be fastened to the mechanical part, a free surface opposite the contact surface, input terminals placed on the contact surface and configured to be superposed on the output tracks of the printed circuit board, and output interfaces placed on the free surface at distance from the input terminals and configured to be connected to the piece of electrical equipment, at least one input terminal comprising a cavity configured to receive a conductive adhesive so as to connect together the input terminal and the output terminal when they are superposed.

Abstract: A system for cooling a liquid for lubricating an aircraft turbomachine, includes an exchanger including a cooling volume and a circuit for cooling a heat-transfer fluid by a loop for circulating the two-phase fluid, with thermocapillary pumping. The cooling circuit includes a condenser including channels connected in parallel to one another in order to make it possible to cool the fluid circulating in the condenser from a vapour state to a liquid state, a first capillary evaporator of the exchanger in order to absorb the heat of the lubricating liquid in the first volume, the first evaporator including a capillary porous wick for separating the heat-transfer fluid in the two-phase state between a liquid state and a gaseous state by a capillary pressure jump.

Abstract: The invention relates to a metal powder for a metal injection moulding method, the metal powder being formed of a cobalt-based alloy comprising: —between 23.00 wt % and 24.25 wt% chromium; —between 9.00 wt % and 11.00 wt % nickel; —between 6.50 wt % and 7.50 wt % tungsten; —between 3.00 wt % and 4.00 wt % tantalum; —between 0.45 wt% and 0.60 wt % carbon; —between 0.30 wt % and 0.50 wt % zirconium; —between 0.15 wt % and 0.25 wt % titanium; —at most 2.00 wt % iron; —at most 0.30 wt % silicon; —at most 0.10 wt % manganese; —at most 0.10 wt % copper; —at most 0.015 wt % sulphur; —at most 0.015 wt % phosphorus; —at most 0.010 wt % boron; —at most 200 ppm oxygen; —at most 200 ppm nitrogen; —at most 100 ppm hydrogen.

Abstract: Method for the automated weaving of a woven structure (30) by means of a weaving machine (1), comprising the insertion of a weft thread during the opening of a shed of warp threads, and prior steps of optimization, by an optimization tool (20), of an objective function having a first member evaluating the balance of said warp threads during the shed opening, said balance of the warp threads being evaluated by differences in elongation between the warp threads of an upper opening (10a) of said shed, and of a lower opening (10b) of said shed, and a second member evaluating constraints specific to the weaving machine (1). This optimization comprises the determination of a set of opening parameters that, at least locally, minimize said objective function, and this set of opening parameters is used to set the parameters of the weaving machine (1).

Abstract: The present invention relates to a method for estimating a speed (v) of movement of a wheeled vehicle, wherein a frequency trajectory (?t) representative of the speed (v) of a wheel (RO) of the vehicle (VE) in a filtered spectrogram (S(ft, t)) is estimated (E5) as follows: a probability (pZt|?t) of observation of the trajectory (ft) is estimated (E51) on the basis of a computed amplitude of the filtered spectrogram (S(ft, t)), an a posteriori observation law (pZt|?t) proportional to the product of the probability (p?) and of the probability (p?|Z)? is estimated (E52), the trajectory (ft) is estimated (E53) on the basis of the law (p?|Z), and the speed (v) of movement of the wheel of the vehicle is estimated (E6) on the basis of the trajectory (?t).