Pantin, France
Pantin, France

Safran S.A. is a French multinational aircraft and rocket-engine, aerospace-component, and security company. It was formed by a merger between the aircraft and rocket engine manufacturer and aerospace component manufacturer group SNECMA and the security company SAGEM in 2005. Its headquarters are located in Paris. Wikipedia.

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The invention relates to a system for locking the position of the flaps of a thrust reverser of a turbojet nacelle, said flaps being controlled by actuators, each one swinging about a transverse pivot in order to partially close off the air stream so as to guide it forwards, characterised in that it comprises locks (36) for locking the flaps in an intermediate opening position, between the closed position and the entirely opened-up position.

The invention aims to provide a rotor for a turbine engine comprising: a disc having cavities on the periphery thereof, referred to as primary cavities; a plurality of blades (100) each having a root (110) consisting of, at the bottom portion thereof, a bulb (120) locked axially in said primary cavities; a plurality of added platforms (300, 400), each being arranged between two consecutive blades (100); said rotor being characterised in that said platforms (300, 400) have: a substantially straight plate (301, 401) and a bulb (302, 402) extending radially under the plate (301, 401), said bulb (302, 402) being locked axially in secondary cavities made in the periphery of the disc, the secondary cavities being positioned between two consecutive primary cavities; a spoiler (310, 410) extending substantially axially, said spoiler (310, 410) forming an annular sector arranged opposite at least two consecutive blades.

The invention concerns a turbine blade (91) comprising a root (P), a vane extending in a spanwise direction (EV), ending at a tip (S) and comprising a leading edge and a trailing edge and a pressure-side wall and a suction-side wall, said vane further comprising: at least one upstream duct (93) configured to collect air at the root (P) to cool the leading edge, discharging said air through holes passing through the wall of the leading edge; at least one downstream duct (96) separate from the upstream duct (93) and configured to collect air at the root (P) to cool the trailing edge, discharging said air through holes (97) passing through the pressure wall upstream from the trailing edge; an inner side cavity (101) running along the pressure-side wall to form a heat shield insulating the downstream duct (96).

The invention concerns a turbine blade (11) for a turbomachine, comprising a vane (12) extending in a spanwise direction between a root and a tip, a first inner side cavity (54) running along the pressure-side wall (21) and a second inner side cavity (56) running along the suction-side wall. The blade (11) further comprises at least one inner central duct (53) configured to collect air intended to cool the vane (12). The central duct (53) extends between the side cavities (54, 56), being separated from the side cavities (54, 56) so as to be at least partially thermally isolated from the pressure-side wall (21) and the suction-side wall. The side cavities (54, 56) communicate with each other in a junction region (72) located downstream from the central duct (53), over the majority of the height of the central duct in the spanwise direction.

The invention relates to an assembly for forming a bipolar plate of a fuel cell, comprising two half-plates (1A, 1B) suitable for being assembled one against the other, each of the two half-plates (1A, 1B) comprising grooves (11A, 12A, 11B, 12B) formed by drawing, extending in a longitudinal direction (X-X), and suitable for forming channels for the circulation of reactants (5A, 5B) either side of the half-plates (1A, 1B), and conduits for the circulation of heat-transfer fluid (6) between the two half-plates (1A, 1B), characterised in that the half-plates (1A, 1B) are identical and each comprise at least one pair of complementary indexing elements (2A1, 2A2, 2B1, 2B2, 3A1, 3A2, 3B1, 3B2) produced by drawing, suitable for centring said half-plates (1A, 1B) in relation to each other during the assembly thereof.

Safran and Institute Polytechnique Of Grenoble | Date: 2017-03-22

The invention concerns a device (4) for connecting a radio frequency circuit (3) or component printed on a flexible support (2) to a coaxial cable, comprising: -a first part (14) suitable for being disposed against a first face (5) of the support (2) on which the circuit or the component (3) is printed, the first part (14) comprising a recess capable of housing a coaxial cable connector (13), -a second part (15) capable of being disposed against a second face (6) of the support (2), opposite the first face, and in which the first part (14) and/or the second part (15) comprises attachment means for attaching the first part (14) and the second part (15) to each other, the flexible support (2) being clamped between the first part (14) and the second part (15), in such a way as to maintain an electrical contact between the connector (13) and the circuit or component (3).

The invention relates to a transmission assembly including a transmission member and an oil distribution system for providing oil to the transmission member so as to ensure the lubrication thereof. According to the invention, the transmission member (30) includes at least one rotary pivot (34), rotatable about an axis of rotation, and a pivotable portion (31), pivotable about the rotary pivot (34). The oil distribution system (50) is configured to receive pressurized oil from the oil supply (43a) and transfer it to at least one injection oil receiving chamber of the rotary pivot (34). Said rotary pivot (34) includes injection openings that place the oil receiving chamber in fluid communication with the gap (36) separating the rotary pivot (34) and the pivotable portion (31) so as to form a fluid bearing, and the transmission assembly (3) is capable of injecting oil into said gap (36) at a first injection pressure on an outer portion (36e) of the gap (36), aimed away from the axis of rotation, and at a second injection pressure on an inner portion (36i) of the gap (36), aimed towards the axis of rotation. The second injection pressure is different from the first injection pressure.

The invention relates to a method for detecting a failure of a first turbine engine, referred to as faulty engine (4), of a twin-engine helicopter and for operating a second turbine engine, referred to as sound engine (5), each engine (4, 5) comprising protection end stops regulated by a regulating device which define a maximum power speed, characterized in that it comprises: a step (10) of detecting a fault index of said faulty engine (4); a step (11) of modifying said end stops for protecting said sound engine (5) to protection end stops corresponding to a maximum power single-engine speed, in the event of a fault index being detected; a step (12) of confirming a fault with said faulty engine (4); a step (13) of commanding an increase in the rate of supply of fuel to said sound engine (5) in the event of the fault being confirmed.

Agency: European Commission | Branch: H2020 | Program: RIA | Phase: ICT-02-2016 | Award Amount: 3.81M | Year: 2017

From government to consumer applications, personal identification is an ever increasing concern and demand. Fingerprints are the oldest and the most reliable features to be used because of their singularity and inalterability. The main goal of the PYCSEL project is to develop a low cost thin and large area fingerprint sensing surface enabling the personal identification via the development of a TOLAE technology, combining an organic sensor with a TFT matrix on a plastic foil. Based on the fact that personal recognition requires high resolution (500 dpi) and large (1 up to 4 fingers) sensors, the project focuses on the design, development and integration of a printed pyroelectric PVDF-based sensor layer on a IGZO TFT active matrix on foil and connected to an electronic driver and readout board, resulting in a thin fingerprint conformable sensor with no need for any optical bulky and/or costly extra components integration. Multiple fingerprints capture will be possible with the resulting large area hybrid system whose conformability allow easy further integration and ergonomic use especially for high growth and high value portable security uses. Therefore, it will offer differentiating properties for the portable governmental market as it will exhibit breakthrough in terms of mechanical robustness and conformability. Those advantages will also increase fingerprint sensors penetration into high volume automotive (personalized HMIs), machine tool (user-restricted HMI), buildings (access control) and consumer markets (PCs). The PYCSEL project will also entitle a transfer from LAB proof of concept to Technological validation in relevant environment. The final large area fingerprint sensor prototype will be able to acquire 4 fingers at a time, with an objective resolution of 500 dpi, and will allow the running of biometric acquisition campaigns as well as demonstration of safety control in automotive application by end-users.

Agency: European Commission | Branch: H2020 | Program: RIA | Phase: DS-01-2016 | Award Amount: 3.53M | Year: 2017

Implementing cryptography on embedded devices is an ongoing challenge: every year new implementation flaws are discovered and new attack paths are being used by real life adversaries. Whilst cryptography can guarantee many security properties, it crucially depends on the ability to keep the used keys secret even in face of determined adversaries. Over the last two decades a new type of adversary has emerged, able to obtain, from the cryptographic implementation, side channel leakage such as recording of response times, power or EM signals, etc. To account for such adversaries, sophisticated security certification and evaluation methods (Common Criteria, EMVCo, FIPS) have been established to give users assurance that security claims have withstood independent evaluation and testing. Recently the reliability of these evaluations has come into the spotlight: the Taiwanese citizen card proved to be insecure, and Snowdens revelations about NSAs tampering with FIPS standards eroded public confidence. REASSURE will (1) improve the efficiency and quality of all aspects of certification using a novel, structured detect-map-exploit approach that will also improve the comparability of independently conducted evaluations, (2) cater for emerging areas such as the IoT by automating leakage assessment practices in order to allow resistance assessment without immediate access to a testing lab, (3) deliver tools to stakeholders, such as reference data sets and an open-source leakage simulator based on instruction-level profiles for a processor relevant for the IoT, (4) improve existing standards by actively pushing the novel results to standardization bodies. REASSUREs consortium is ideal to tackle such ambitious tasks. It features two major circuits manufacturers (NXP, MORPHO), a highly respected side channel testing lab (Riscure), an engaged governmental representative (ANSSI), and two of the most prominent research institutions in this field (UCL, University of Bristol).

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