DISPOSITIF DE COMMANDE D'UNE ROTATION RELATIVE ENTRE DEUX ELEMENTS ARTICULES ET STRUCTURE MECANIQUE DEPLOYABLE, NOTAMMENT POUR VEHICULE SPATIAL, UTILISANT AU MOINS UN DISPOSITIF DE CE TYPE

摘要

In order to control relative rotation between two elements (10, 12), such as an unfolding mechanical structure flaps, on a space vehicle, a bistable shape-memory alloy torque shaft, heated over its whole length by heaters bonded on the bar and maintained by banding rings, is used. A stop (22) limits the pivoting to the predetermined pivoting angle to be controlled. The torque shaft (16) excess pivoting is applied to a mechanical fuse (18), inserted between the bar and one of the elements (12).