Airbus Defence and Space Sas

Bernard Deltour

Gilles Pupille

Sylvain Leconte

Christophe Berend

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.

Spacecraft comprising an electrical device and an orientation system for said electrical device

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.

Radiator with reduced solar irradiation and improved guidance system for geostationary satellite

Disclosed is a spacecraft including a casing having a face, a radiator borne by the face, and a thermal insulation device borne by the radiator. The thermal insulation device includes: &#x2014;a first screen device able to cover a first zone of the radiator, the first screen device including a thermally insulating and flexible sheet, and at least two springs capable of producing a constant reaction force, the springs being preformed in such a way as to wind up on themselves at rest and being fixed to the insulating sheet, the springs each having an end fixed to the radiator and a free end; and&#x2014;a traction device able to pull on the free end of the springs to make the sheet cover the first zone and to release the free end in order to expose the first zone to space.

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Toulouse, France

Bernard Deltour