Abstract: A wireless proximity detection system employs short-range wireless communication to detect the proximity of a user device within a strictly defined wireless zone and as a result trigger a desired action. The proximity detection system may utilize one or more leaky feeders to define the wireless zone and the associated received signal strength(s) detected by the user's wireless device. Alternatively, a compact planar antenna structure coupled with a highly shielded radio transceiver is used to allow a similar precise low-power radio beam to be emitted defining a small location to enable identification of a wireless device such as a smartphone in a given area in front of the device. The planar antenna structure allows a compact and low-cost fabrication method and the use of common printed circuit fabrication methods provide an integrated solution.

Abstract: An aircraft portion with reduced drag includes a wing-fuselage junction fairing at the interface between the wing and the fuselage. The junction fairing has an outer surface including two lateral portions each covering the root of a respective wing, and a lower portion connecting the side portions to each other and extending under the fuselage. The flow of air around the junction fairing during the movement of the aircraft generates at least two vortices induced on both sides, respectively, of a median longitudinal plane. The aircraft portion also includes at least two vortex generating devices extending from the lower portion of the outer surface of the junction fairing on both sides, respectively, of the median longitudinal plane.

Abstract: An aircraft portion with reduced drag includes a wing-fuselage junction fairing at the interface between the wing and the fuselage. The junction fairing has an outer surface including two lateral portions each covering the root of a respective wing, and a lower portion connecting the side portions to each other and extending under the fuselage. The flow of air around the junction fairing during the movement of the aircraft generates at least two vortices induced on both sides, respectively, of a median longitudinal plane. The aircraft portion also includes at least two vortex generating devices extending from the lower portion of the outer surface of the junction fairing on both sides, respectively, of the median longitudinal plane.

Abstract: A wireless proximity detection system employs short-range wireless communication to detect the proximity of a user device within a strictly defined wireless zone and as a result trigger a desired action. The proximity detection system may utilize one or more leaky feeders to define the wireless zone and the associated received signal strength(s) detected by the user's wireless device. Alternatively, a compact planar antenna structure coupled with a highly shielded radio transceiver is used to allow a similar precise low-power radio beam to be emitted defining a small location to enable identification of a wireless device such as a smartphone in a given area in front of the device. The planar antenna structure allows a compact and low-cost fabrication method and the use of common printed circuit fabrication methods provide an integrated solution.

Abstract: A wireless proximity detection system employs short-range wireless communication to detect the proximity of a user device within a strictly defined wireless zone and as a result trigger a desired action. The proximity detection system may utilize one or more leaky feeders to define the wireless zone and the associated received signal strength(s) detected by the user's wireless device. Alternatively, a compact planar antenna structure coupled with a highly shielded radio transceiver is used to allow a similar precise low-power radio beam to be emitted defining a small location to enable identification of a wireless device such as a smartphone in a given area in front of the device. The planar antenna structure allows a compact and low-cost fabrication method and the use of common printed circuit fabrication methods provide an integrated solution.

Abstract: A wireless proximity detection system employs short-range wireless communication to detect the proximity of a user device within a strictly defined wireless zone and as a result trigger a desired action. The proximity detection system may utilize one or more leaky feeders to define the wireless zone and the associated received signal strength(s) detected by the user's wireless device. Alternatively, a compact planar antenna structure coupled with a highly shielded radio transceiver is used to allow a similar precise low-power radio beam to be emitted defining a small location to enable identification of a wireless device such as a smartphone in a given area in front of the device. The planar antenna structure allows a compact and low-cost fabrication method and the use of common printed circuit fabrication methods provide an integrated solution.

Abstract: A pipe (50) that makes it possible to channel pressurized air into an aircraft, includes an inner tube (52), an outer tube (54) that is essentially coaxial to the inner tube (52), an insulating material (56) that is inserted between the two tubes (52, 54) and that is made of a heat-insulating and gas-porous material, and a leak detection device (70), characterized in that the leak detection device (70) is arranged at least in part between the inner tube (52) and the outer tube (54) and in that at least at one end (60), the detection device follows a concentric trajectory (84) to the inner tube (52).

Abstract: A crosspiece including two terminal surfaces (22.1, 22.2) and a pipe (24) with a longitudinal axis (26) that is essentially perpendicular to the terminal surfaces (22.1, 22.2), includes two parts (40.1, 40.2), each having a terminal surface (22.1, 22.2), a first part (40.1) including at least one edge (48) that can be flattened against an edge (48) of the other part (40.2), with the edges having shapes that immobilize the two parts in the direction of the longitudinal axis (26) that makes it possible to adjust the relative position of the two parts in such a way as to obtain a desired length between the terminal surfaces.

Abstract: An aircraft includes a hose that makes it possible to channel the pressurized air that is used in a sleeve (52) that delimits an annular chamber with the hose, with the sleeve (52) including at least one opening (54) that is delimited by an edge (58) that makes it possible to link the annular chamber and the outside of the sleeve (52), and a leak detection system that includes at least one loop (A) in the form of a threadlike element (56), characterized in that it includes a connecting device that includes a ring (60) that is connected at at least one connecting point (64) with a loop (A), and a flexible wall that delimits a hose (68) for channeling the air that extends from the edge (58) of the opening (54) up to the ring (60).

Abstract: A pipe (50) that makes it possible to channel pressurized air into an aircraft, includes an inner tube (52), an outer tube (54) that is essentially coaxial to the inner tube (52), an insulating material (56) that is inserted between the two tubes (52, 54) and that is made of a heat-insulating and gas-porous material, and a leak detection device (70), characterized in that the leak detection device (70) is arranged at least in part between the inner tube (52) and the outer tube (54) and in that at least at one end (60), the detection device follows a concentric trajectory (84) to the inner tube (52).

Abstract: A crosspiece including two terminal surfaces (22.1, 22.2) and a pipe (24) with a longitudinal axis (26) that is essentially perpendicular to the terminal surfaces (22.1, 22.2), includes two parts (40.1, 40.2), each having a terminal surface (22.1, 22.2), a first part (40.1) including at least one edge (48) that can be flattened against an edge (48) of the other part (40.2), with the edges having shapes that immobilize the two parts in the direction of the longitudinal axis (26) that makes it possible to adjust the relative position of the two parts in such a way as to obtain a desired length between the terminal surfaces.

Abstract: An aircraft includes a hose that makes it possible to channel the pressurized air that is used in a sleeve (52) that delimits an annular chamber with the hose, with the sleeve (52) including at least one opening (54) that is delimited by an edge (58) that makes it possible to link the annular chamber and the outside of the sleeve (52), and a leak detection system that includes at least one loop (A) in the form of a threadlike element (56), characterized in that it includes a connecting device that includes a ring (60) that is connected at at least one connecting point (64) with a loop (A), and a flexible wall that delimits a hose (68) for channeling the air that extends from the edge (58) of the opening (54) up to the ring (60).

Abstract: The method comprises forming at least one external coating on the surface of the product to be protected, the coating being constituted by a composition mainly containing a mixture of phosphates, of silica, and of alumina belonging to a P.sub.2 O.sub.5 --SiO.sub.2 --Al.sub.2 O.sub.3 system, and, after drying, implementing heat treatment at a temperature that is sufficient at least to transform the external coating into an insoluble cement capable of forming a self-sealing glass. The external coating is formed of a liquid suspension that is applied by spray-painting or by means of a brush, the suspension containing said mixture of phosphates, of silica, and of alumina. Prior to forming the external coating, the product may be impregnated to the core within the residual open pores of the composite material, using a liquid solution of phosphates, of sodium, and of potassium.

Abstract: An ultrasonic echography apparatus, comprising a device for forming M channels which comprises, for each channel an analog-to-digital converter a delay line for introducing a delay with a step of 1/f.sub.e, and a circuit for interpolation and selection from N samples for each input sample, which circuit is formed by:N parallel processing chains (j=1, . . . , N), N-1 of the chains comprising a respective digital filter for interpolation with a shift j/Nf.sub.e with respect to the non-interpolated signal of the N.sup.th chain, the N.sup.th chain comprising a compensation delay line to compensate for the delay introduced by the interpolation filter,and a multiplexer (422.sub.i) for the N parallel chains.