UNFOLDING LARGE DIMENSIONED COSMIC REFLECTORS AND THE METHOD OF PERFORMANCE OF TERRESTRIAL TESTS Russian patent published in 2012 - IPC H01Q15/16 

FIELD: cosmonautics.

SUBSTANCE: invention relates to the unfolding large-dimensioned reflectors of the cosmic aerials and the method of their unfolding during terrestrial tests; the unfolding large-dimensioned cosmic reflector contains the central unit, strong ring formed by the horizontal folded bearing force canes and the vertical bearing power racks connected to the main and intermediate flexible bearing antenna lobes, pulling rope and block unfolding system interacting with the opening drive, strong ring, and central unit, the retiform curtain fixed on the main and intimidate flexible bearing lobes on the vertical canes setting the form of the working surface of the reflector, it contains in the radially located the main and intermediate flexible bearing lobes in the shape of guy-cane lobes, their plane is square to the long axis of the central unit at that the principle flexible bearing lobes with one end is fixed to the vertical bearing power racks of the strong ring and the other end - to the central unit, the intermediate flexible bearing lobes are fixed to the flexible tie-rods connected with the attachment lugs of the main bearing lobes in the shape of guy-cane lobes fixed to the vertical bearing racks on the upper and bottom flanges of the strong ring; the main and intermediate flexible bearing lobes in the shape of guy-cane lobes include vertical hard canes of different length set at intervals, which form the parabolic surface of the reflector and contain attaching lugs for the retiform curtain and are located concentrically from the center to the periphery edge at intervals equal to the interval of setting of the hard vertical canes; the vertical bearing power racks are equipped with sliding bars with cross stays pin-joined to the folding bearing power canes forming the surface of the strong ring, the horizontal folding bearing power canes and vertical bearing power racks have on the surface thereon the roller elements fixed thereto from outside and connected with one another by the pull robe and block unfolding system which interacts with the opening mechanism (drive) installed on the outside of the power bearing vertical rod; the flexible approximating elements are concentrically from the center to the periphery edges fixed to the vertical canes on the upper and bottom surfaces.

EFFECT: minimization of dimension of the reflector imbedding for the transportation position under the payload fairing, reduction of the weight of the reflector, enhancement of the accuracy of the surface of the reflector and reliability of unfolding and folding during terrestrial tests, many fold cost reduction of the test bed during practicing the method of unfolding and folding of the reflector.

4 cl, 7 dwg