초록 ▼

A deployable spacecraft borne circular reflector structure comprises a plurality of plies of graphite fiber reinforced epoxy (GFRE) fibers, each ply comprising at least two layers of graphite epoxy reinforced fibers having quasi-isotropic properties. A circular ring of multiple layer plies of like c

A deployable spacecraft borne circular reflector structure comprises a plurality of plies of graphite fiber reinforced epoxy (GFRE) fibers, each ply comprising at least two layers of graphite epoxy reinforced fibers having quasi-isotropic properties. A circular ring of multiple layer plies of like construction as the reflector and having a U-shaped cross-section is bonded to the reflector rear surface adjacent the reflector peripheral edge. Each layer of each structure is formed from prepreg graphite fiber epoxy reinforced material.

대표청구항 ▼

An electromagnetic radiation reflector structure comprising: a sheet of laminated material shaped to form an electromagnetic radiation reflector, said sheet being a section of a surface of revolution; and a peripheral stiffening rib of laminated material attached at a surface of and extending about

An electromagnetic radiation reflector structure comprising: a sheet of laminated material shaped to form an electromagnetic radiation reflector, said sheet being a section of a surface of revolution; and a peripheral stiffening rib of laminated material attached at a surface of and extending about the periphery of said sheet; said sheet and rib each comprising a laminated material including a plurality of plies where each ply includes a plurality of layers of graphite fiber reinforced epoxy (GFRE), the fibers in at least two adjacent layers being oriented relative to each other to form a quasi-isotropic ply, said quasi-isotropic plies being combined to have a plane of symmetry within said laminated sheet and rib, each layer of said sheet comprising a plurality of tapes of said GFRE fibers, said tapes each having a pair of elongated edges parallel to the fibers thereof, said tapes abutting said edges to form a continuous solid coplanar sheet, said tapes each having a transverse dimension relatively small compared to its length, the fibers in each layer being substantially coplanar and of substantially uniform spacing.