Abstract: A backing structure of an antenna reflector for satellite communication to increase the stiffness and the frequency of the antenna reflector, having a deployable panel attached to a spacecraft at a hinge/gimbal interface and a plurality of hinge-release points. The backing structure has a plurality of first ribs and second ribs protruding from the deployable panel and extending substantially across the center of mass of the deployable panel. The first ribs connect the hinge-release mechanism points across a center of mass of the deployable panel, and the second ribs connect the hinge/gimbal interface point to the hinge-release mechanism points, which allows improved hinge-release mechanism attachment with a nut.

Abstract: An integrated reflector and boom (1) for a deployable space based reflector antenna includes a facesheet (9) of stiff reflective material and a stiff lattice or grid structure bonded to the facesheet in a reflector portion of the assembly and defines a boom to the assembly. The grid structure is formed of ribs (13, 15, 17 & 19) that interlock through slots formed in the ribs, arranged in a symmetric pattern that defines an isogrid structure in the reflector portion and in at least a part of the boom assembly. At least some of the ribs extend in one piece from the reflector portion and into the boom. One of those ribs (13) is located along an axis of symmetry of the grid structure.

Abstract: A composite structure and method for constructing same for use in fabricating the framework of a spacecraft is disclosed. The structure is cut from flat sheets of composite laminate materials, and then assembled. The use of tenons and mortises provides for self-fixturing and adhesive bonding of the structural components.