Passive deployment mechanism for space tethers

B - Operations – Transporting – 64 – G

Patent

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B64G 4/00 (2006.01) B64G 1/22 (2006.01) B64G 1/64 (2006.01)

Patent

CA 2492887

Mechanism for passively deploying expendable space tethers on orbit, by means of an initial separation impulse only, provided by a simple spring system that is part of the mechanism itself. The passive deployment of the space tether and a tethered end-mass is provided by the particular mechanism devised, having very low deployment friction and resistance. Tether deployment brake towards the final part of deployment is produced by a daisy-like brake, stored within the winding of the fixed tether spool so that it is automatically deployed (opened) and starts its deployment braking or resistance function from a planned point of the tether deployment in space.

L'invention concerne un mécanisme qui permet de déployer passivement des filins spatiaux (7) sacrifiables sur orbite, par une unique impulsion de séparation initiale produite par un système à ressort simple (10) faisant partie du mécanisme lui-même. Le déploiement passif du filin spatial et d'une masse d'ancrage captive est effectué par le mécanisme de l'invention mis au point, qui présente une très faible friction et résistance au déploiement. Un freinage du déploiement du filin est accompli vers la phase finale du déploiement par un frein à collerette (12) entreposé à l'intérieur de l'enroulement du corps du filin fixe, de sorte qu'il se déploie (s'ouvre) automatiquement et commence à mettre en oeuvre sa fonction de freinage ou de résistance au déploiement à partir d'un point prévu du déploiement du filin dans l'espace.

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