Abstract: A deployable device includes a tape-spring capable of passing from a wound configuration about a first axis Z to a deployed configuration along a second axis X substantially perpendicular to the first axis Z, the tape-spring having two characteristic dimensions, a first characteristic dimension being the width of the tape-spring along the first axis Z, a second characteristic dimension being the thickness of the tape-spring along a third axis Y substantially perpendicular to the first axis Z and to the second axis X. At least one of the two characteristic dimensions has a non-constant value along the second axis X.

Abstract: A deployable device includes a supporting structure, a mandrel able to move in rotation with respect to the supporting structure about a first axis Z, a membrane able to pass from a rolled-up configuration rolled up around the mandrel about the first axis Z to a deployed configuration deployed along a second axis X substantially perpendicular to the first axis Z. The device comprises two fittings secured to the mandrel at their centre, arranged one on either side of the membrane and comprising first stubs on their periphery, a casing extending between the two fittings, the casing comprising second stubs of a shape complementing the shape of the first stubs, the casing being able to pass from a rolled-up configuration at least partially enveloping the membrane in the rolled-up configuration to a deployed configuration at least partially superposed on the membrane in the deployed configuration.

Abstract: A deployable device includes a supporting structure, a deployable structure capable of switching from a configuration wound around a first axis to a configuration deployed according to a second axis substantially at right angles to the first axis, by being deployed by a length defined in a frame of reference of the supporting structure, wherein it further comprises a deployed length control device comprising a sensor and a computer linked to the sensor, a first conductive track electrically linked to the sensor extending on the deployable structure, substantially along the perimeter of the deployable structure, and forming one or more turns of a first coil in the wound configuration, and in that the sensor is configured to measure an electrical parameter from the first electrically conductive track which varies with the deployed length of the deployable structure and the computer is configured to determine the deployed length of the deployable structure.

Abstract: A deployable device includes a supporting structure, a mandrel able to move in rotation with respect to the supporting structure about a first axis Z, a membrane able to pass from a rolled-up configuration rolled up around the mandrel about the first axis Z to a deployed configuration deployed along a second axis X substantially perpendicular to the first axis Z. The device comprises two fittings secured to the mandrel at their centre, arranged one on either side of the membrane and comprising first stubs on their periphery, a casing extending between the two fittings, the casing comprising second stubs of a shape complementing the shape of the first stubs, the casing being able to pass from a rolled-up configuration at least partially enveloping the membrane in the rolled-up configuration to a deployed configuration at least partially superposed on the membrane in the deployed configuration.

Abstract: A link device comprising a first object and a second object comprises a first strip, capable of passing from a configuration wound about an axis Z about a support fixed to the first object to a configuration deployed along an axis X substantially at right angles to the axis Z, the strip having an end intended to come into contact with the second object, so as to link the first object to the second object.

Abstract: A deployable device includes a supporting structure, a deployable structure capable of switching from a configuration wound around a first axis to a configuration deployed according to a second axis substantially at right angles to the first axis, by being deployed by a length defined in a frame of reference of the supporting structure, wherein it further comprises a deployed length control device comprising a sensor and a computer linked to the sensor, a first conductive track electrically linked to the sensor extending on the deployable structure, substantially along the perimeter of the deployable structure, and forming one or more turns of a first coil in the wound configuration, and in that the sensor is configured to measure an electrical parameter from the first electrically conductive track which varies with the deployed length of the deployable structure and the computer is configured to determine the deployed length of the deployable structure.

Abstract: A deployable device includes a tape-spring capable of passing from a wound configuration about a first axis Z to a deployed configuration along a second axis X substantially perpendicular to the first axis Z, the tape-spring having two characteristic dimensions, a first characteristic dimension being the width of the tape-spring along the first axis Z, a second characteristic dimension being the thickness of the tape-spring along a third axis Y substantially perpendicular to the first axis Z and to the second axis X. At least one of the two characteristic dimensions has a non-constant value along the second axis X.

Abstract: A deployable device includes a plurality of stowing rollers that can each move in rotation about a first axis Zi, a plurality of tape-springs, each capable of passing from a wound configuration in one of the stowing rollers to a deployed configuration along a second axis Xi substantially perpendicular to the first axis Zi of the associated stowing roller and having a substantially concave face, the concave faces of the tape-springs facing one another, the tape-springs being at least partially superposed in pairs over a contact surface. The deployable device comprises a reversible adherent link on the contact surface between at least two of the tape-springs in the deployed configuration.

Abstract: A deployment and aiming device of an instrument comprises: a first support, a second support to receive the instrument, N mandrels, N being an integer number greater than or equal to 1, positioned around the first support, each of the N mandrels rotationally mobile relative to the first support about a mandrel axis ZN intersecting the mandrel, N linear elements, each of the N linear elements cooperating with one of the N mandrels, each of the N linear elements having first and second ends, wherein the first end of the N linear elements is fixed in the mandrel with which it cooperates at a fixing point, wherein the second end of the N linear elements is linked to the second support, such that a rotation of the mandrel about its axis ZN generates a displacement of the fixing point.

Abstract: A control system comprises sources of supply, in terms of power and in terms of control signals, capable of equally piloting each of the electric thrusters and further comprises a switching device capable of linking any one of the sources of supply to any one of the electric thrusters. The switching device comprises a rotary main roller divided into a number of angular segments comprising input and output conductive tracks and pre-wired electrical networks linking the input conductive tracks to the output conductive tracks of each angular segment, the pre-wired electrical networks associated with the different angular segments all being different and dedicated to different configurations for the piloting of the electric thrusters by the sources of supply.

Abstract: A linear actuator comprises a roller screw mechanism guided in rotation with respect to a structure by two angular-contact ball bearings, the roller screw mechanism comprising rollers interposed between an endless screw and two tapped rings which are joined together in rotation and free in translation. Each tapped ring is secured to an inner ring of a ball bearing. The linear actuator further comprises a single preloading device capable of applying load between two outer rings of the angular-contact ball bearings respectively, thereby simultaneously allowing the loading of the roller screw mechanism and the rotational guidance of the roller screw mechanism with respect to the structure.

Abstract: A system for manipulating a space object in space comprises an articulated structure, wherein the articulated structure comprises a single actuator configured to control, equally, the deployment of the structure in space, the gripping of the space object and the folding down of the articulated structure. Developments describe the use of a fixed supporting structure, a threaded rod, a tapped whorl guided by the threaded rod and a set of articulated bars held by pivot links at their interfaces on the tapped whorl and on the fixed supporting structure. Various mechanical configurations are described, notably gripping devices comprising rollers for locking and/or unlocking the space object by separation of the articulated bars. A method of regulation, of control and of adjustment of the manipulation is provided.

Abstract: A projectile extending along an axis X between two ends, the projectile being positioned in a barrel of substantially cylindrical shape of axis X is provided. The projectile comprises: a hollow part at its center, opening onto a first of the two ends of the projectile to receive a compressed fluid, a plurality of vents passing through the projectile from the hollow part substantially perpendicular to the axis X and with a substantially radial outlet to expel the compressed fluid substantially at a tangent to the projectile. The invention also relates to the barrel and to a launch device comprising a projectile and a barrel.

Abstract: A deployable structure comprises a mast and two storage rollers each supporting a flexible solar generator, the two storage rollers being articulated on the mast. The mast comprises at least one longitudinal rod and two lateral arms, inclined angularly in two opposite directions that are symmetrical relative to the longitudinal rod, each lateral arm comprising an end provided with a hollow guide. Each storage roller has a longitudinal axis comprising a bent end forming a pivot respectively articulated inside the hollow guide of a corresponding lateral arm, the pivot of each storage roller having an axis of revolution different from the longitudinal axis of the corresponding storage roller.

Abstract: A tape having a fully wound stable state and a fully unwound stable state, configured for space applications, the intermediate states between the fully wound state and the fully unwound state comprises a single continuous portion of wound tape with a first radius of curvature greater than a threshold value and a single continuous portion of unwound tape with a second radius of curvature less than the threshold value, the value of the second radius of curvature being continuous over the unwound portio; the tape comprises a stack comprising fibrous layers extending in a longitudinal direction, the resulting stack having symmetry with respect to a longitudinal plane of its fibres to compensate for torsional deformations generated by variations in temperature.

Abstract: A solar generator deployment device includes at least one primary tape-spring supporting a flexible membrane with a set of flexible photovoltaic cells on one face, at least one secondary tape-spring, and a reinforcing structure attached to the primary tape-spring and secondary tape-spring, said device having a wound state in which the primary tape-spring supporting the flexible membrane and secondary tape-spring and reinforcing structure are co-wound around a mandrel; and an unwound state in which said primary tape-spring and secondary tape-spring are unwound. The device comprises, at the level of said mandrel, means for offsetting, in the unwound state, the root of said secondary tape-spring so that the reinforcing structure is deployed within a volume situated on the side opposite the face of the flexible membrane comprising flexible photovoltaic cells and supports said flexible membrane, the device then being in the deployed state.

Abstract: A deployable structure comprises: a mount comprising a first point and a second point opposite and a third point, a storage reel able to rotate about an axis Z, a tape spring able to switch from a configuration in which it is wound about the axis Z in the storage reel into a configuration in which it is deployed along an axis X substantially perpendicular to the axis Z, the first and second points forming a double support with the tape spring to keep the tape spring in the deployed configuration. The third point is able to form a simple support with the tape spring, the storage reel is able to move with respect to the third point and the storage reel is pressed against the third point to guide the deployment of the tape spring.

Abstract: A deployable mast with spontaneous autonomous deployment comprises at least one elementary structural block with a longitudinal axis of deployment X, the elementary structural block comprising two, respectively lower and upper platforms parallel to a plane YZ orthogonal to axis X, and N stages stacked on one another parallel to axis X, where N is more than 1, and where i is between 1 and N?1. Each stage comprises at least six flexible longitudinal connection arms which are articulated by tape springs, which arms are, in the deployed position, on planes parallel to axis X and are inclined relative to axis X, the N stages being secured to one another in pairs by means of connection platforms parallel to the plane YZ; two adjacent lower and upper stages are offset angularly relative to one another by rotation around the axis of deployment X.

Abstract: A link device comprising a first object and a second object comprises a first strip, capable of passing from a configuration wound about an axis Z about a support fixed to the first object to a configuration deployed along an axis X substantially at right angles to the axis Z, the strip having an end intended to come into contact with the second object, so as to link the first object to the second object.

Abstract: A deployment and aiming device of an instrument comprises: a first support, a second support to receive the instrument, N mandrels, N being an integer number greater than or equal to 1, positioned around the first support, each of the N mandrels rotationally mobile relative to the first support about a mandrel axis ZN intersecting the mandrel, N linear elements, each of the N linear elements cooperating with one of the N mandrels, each of the N linear elements having first and second ends, wherein the first end of the N linear elements is fixed in the mandrel with which it cooperates at a fixing point, wherein the second end of the N linear elements is linked to the second support, such that a rotation of the mandrel about its axis ZN generates a displacement of the fixing point.