RADIATOR WITH REDUCED SOLAR IRRADIATION AND IMPROVED GUIDANCE SYSTEM FOR GEOSTATIONARY SATELLITE

    公开(公告)号:US20230095742A1

    公开(公告)日:2023-03-30

    申请号:US17802344

    申请日:2021-02-09

    Abstract: A radiator for a geostationary satellite is disclosed having a radiative panel perpendicular to a radiation axis, and pivoting relative to the radiation axis, a mounting foot for the panel, a motor which rotates the mounting foot about a rotation axis, the radiation axis and the rotation axis being tilted relative to each other by an angle corresponding to the angle of the satellite's orbital plane relative to the ecliptic plane of the planet, and a guidance system for the panel, limiting rotation of the panel about the rotation axis, including a connecting arm pivoting relative to the satellite about a first axis and relative to the panel about a second axis concurrent with the first axis at a point of intersection of all the axes.

    SPACECRAFT COMPRISING AN ELECTRICAL DEVICE AND AN ORIENTATION SYSTEM FOR SAID ELECTRICAL DEVICE

    公开(公告)号:US20240359830A1

    公开(公告)日:2024-10-31

    申请号:US18686357

    申请日:2022-08-23

    CPC classification number: B64G1/428 B64G1/413 F03H1/0037

    Abstract: A spacecraft is disclosed including a frame, an electrical device powered and/or controlled by electrical cables, and a system for orienting the electrical device, which orientation system includes at least two rotary actuators with non-parallel axes (Δa, Δb), a junction part between the two rotary actuators, one or more guide forks, arranged outside the junction part and fastened to the latter, each guide fork including fingers configured to support the electrical cables and to form a guide path for said cables so that the electrical cables never exert, on the rotary actuators, a torque higher than the torque capacity of the actuators, at least one of the forks having a main axis which passes through the center of intersection of the axes of rotation of the actuators.

    TELESCOPIC SPACE MAST
    3.
    发明公开

    公开(公告)号:US20230294845A1

    公开(公告)日:2023-09-21

    申请号:US18024458

    申请日:2021-08-23

    CPC classification number: B64G1/222

    Abstract: A telescopic mast is disclosed including coaxial segments that can be controlled from a stowed position to a deployed position, a set of guide systems disposed between the adjacent segments, a set of systems for synchronising the segments during deployment and a system for driving the segments from the stowed position to the deployed position. Each segment includes the same determined number of angle sections secured together and extending over the entire length of the segment, the number of angle sections being at least three, each segment having a cross-section forming a polygon whose angle sections occupy the vertices, each angle having a flat central portion bordered by two side wings, the angle sections of two adjacent segments facing one another. Each guide system is disposed between two adjacent segments being fastened on one of the angle sections of one of the two adjacent segments and comprising rollers rolling on the central portion of the opposite angle section belonging to the other one amongst said two adjacent segments.

    DEVICE FOR DEPLOYING AND POINTING AN EQUIPMENT ITEM CARRIED BY A SPACECRAFT

    公开(公告)号:US20230182926A1

    公开(公告)日:2023-06-15

    申请号:US17926044

    申请日:2021-05-11

    CPC classification number: B64G1/222 B64G1/10

    Abstract: A device for deploying and pointing an equipment item is disclosed including a mobile platform for receiving the equipment item, a carrier integrally secured to a wall of a spacecraft, and three identical linear actuators which connect the carrier to the mobile platform and are suitable for moving the platform in translation along one axis and for orienting the platform in rotation about two axes. Each linear actuator including a first portion connected to the platform by a universal joint, a second portion connected to the carrier by a pivot connection, a motor, and a screw/nut joint interconnecting the two portions, each universal joint being suitable for preventing the screw/nut joint from rotating about the axis, such that driving the motor causes a translational movement between the first and the second portion.

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