UNFOLDED LARGE MIRROR REFLECTOR FOR SPACECRAFT Russian patent published in 2011 - IPC H01Q15/16 G02B5/08 B64G1/22 

FIELD: physics.

SUBSTANCE: unfolded large mirror reflector for spacecraft has a reflecting surface made from cells in form of mirror elements mounted on frames, an unfolding mechanism, hinges and retaining devices. The cells are in form of identically shaped lobes with identical reflecting surfaces lying radially from the centre to the round face of the reflector. In the folded position of the reflector, its lobes, inner frontal surfaces of which are parts of the cylindrical surface, lie over each other while facing the reflecting surfaces to one side. Elements of their retaining devices are connected to reciprocal parts of the retaining devices lying on a movable cylinder connected to the unfolding mechanism with an electromechanical drive, the outer diametre of which is less than the diametre of the cylindrical surface of the faces, with possibility of multiple translational and rotational transverse movements. Said movable cylinder lies inside not less than two concentric fixed uniform structures with cylindrical faces, having a surface for seating the lobes, and the first lobe is placed on the faces of the fixed structures, fixed on them in a position which corresponds to the working position.

EFFECT: high reliability, high directivity and simple technique for making the cells.

5 cl, 5 dwg