Abstract:
Dispositif (100), notamment pour positionner un mobile (101) dans un fluide, caractérisé en ce qu'il comprend : - un ensemble d'au moins deux sondes (1) disposées chacune en un point de mesure différent, et équipée chacune d'un capteur (3) de pression différentielle, - des moyens pour fournir une contre-pression (P7) commune à tous les capteurs dudit l'ensemble, - des moyens calcul comprenant des moyens (20) pour calculer une pression différentielle utile (DP) à partir des pressions différentielles (DPA, DPB) respectives mesurées par chaque capteur (3A,3B) respectif d'une paire de sondes (1A,1B) parmi les sondes dudit ensemble. Un tel dispositif est particulièrement adapté pour être utilisé dans un avion.
Abstract:
Le système de drapage de bandes de matériau composite (3) comprend, outre une tête de déroulement (20), un ensemble original composé d'une source lumineuse (4) pour échauffer la bande (3) et durcir le composite et une paire de rouleaux (6a et 6b) appliquant la pression voulue pour assembler la bande à un stratifié (2) déjà déposé ou l'appliquer sur le support (1). Comme l'application de chaleur est concentrée à distance des rouleaux (6a et 6b) et avec une incidence perpendiculaire, ceux-ci peuvent être construits en matière élastique sans inconvénient, ce qui leur permet de bien s'adapter à la courbure transversale de l'outillage (1) de support et d'appliquer une pression uniforme.
Abstract:
A wind-propelled hydrofoil comprising a forward assembly with at least partially submerged forward foils and a fully submerged aft foil. The forward foils (43, 44) are such that the resultant of the vertical forces drops when said assembly is translated vertically upwards, with a heave characteristic (F), and increases when said forward assembly is subject to upward pitching, with an incidence characteristic (A). The aft foil (46) has an incidence characteristic (R) such that R(d-g) - Ag + F(g +r ) > 0, wherein d is the distance between the aft foil (46) and the centre of heave, g is the distance between the centre of gravity and the centre of heave, and r is the gyration radius of the hydrofoil.
Abstract:
A system for secure transfer of digital aircraft data comprising redundant data producer systems includes a first data producer, capable of producing first data, at successive moments, and a second data producer, redundant to the first system. The second data producer is capable of producing an integrity check result relating at least to second data which it produces in a manner redundant to the first data, the integrity check result being transmitted to a data consumer. The data consumer is capable of retrieving the first data and the integrity check result produced by the second system, to produce a new integrity check result from the first data and compare the new integrity check result with the integrity check result produced by the second system.
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 control system is for a high lift assembly of an aircraft. The assembly is controllable in two aerodynamic configurations each with different lift. The control system includes a manual control device operable by a pilot of the aircraft. The manual control device includes at least one member movable relative to a base body. The movable member can be moved relative to the base body between a rest position, a first position and a second distinct position. The manual control device includes a resilient return device for the movable member in the rest position. The manual control device issues a signal when the movable member reaches either the first or second position, to move the high lift assembly between two of the aerodynamic configurations.
Abstract:
An aircraft cabin includes at least one seat able to receive at least one passenger; at least one table arranged opposite the seat; and a safety device able to be mounted on the table, below the table or received in the table. The safety device includes a deployable protection assembly including an airbag deployable from a retracted idle configuration to a deployed safety configuration, and a system for controlling the deployment of the or each airbag, able to trigger the deployment of the airbag beyond a threshold deceleration value of the aircraft.
Abstract:
An aircraft rudder pedal includes a frame, a pair of pedals, an output shaft and a mechanical kinematic chain for transmitting to the output shaft a displacement of at least one of the pedals relative to the frame. The mechanical kinematic chain comprises a central transmission part able to be rotated relative to the frame by a displacement of one of the pedals relative to the frame. The mechanical kinematic chain also includes a transmission mechanism joining the central transmission part to the output shaft. The transmission mechanism includes a homokinetic association of two universal joints between said central transmission part and the output shaft.