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A structural system is used to hold a laser communications subsystem having a gimballed telescope mounted on a truss system. Optical equipment requiring high tolerances is mounted onto an equipment support assembly that is mounted within the truss system for the gimballed telescope. This assembly is

A structural system is used to hold a laser communications subsystem having a gimballed telescope mounted on a truss system. Optical equipment requiring high tolerances is mounted onto an equipment support assembly that is mounted within the truss system for the gimballed telescope. This assembly is mounted by means of frame members and truss tubes.

대표청구항 ▼

A structural system attached to a spacecraft at three attachment points, said structural system fixedly holding a plurality of equipment assemblies, said structural system comprising: a truss system for fixedly holding a distal equipment assembly, said truss system having three traingular trusses, t

A structural system attached to a spacecraft at three attachment points, said structural system fixedly holding a plurality of equipment assemblies, said structural system comprising: a truss system for fixedly holding a distal equipment assembly, said truss system having three traingular trusses, three joints being apexes, one from each of said trusses, are fixedly attached to said distal equipment assembly by truss tubes, one of said trusses having two base joints, each fixedly connected to one of lower attachment points of said spacecraft being oppositely positioned in said structural system; a second truss of said trusses having two base joints, one connected to one of said lower attachment points being oppositely positioned, the other of said base joints of said second truss connected to a central attachment point of said spacecraft; a third truss of said trusses having two base joints, one connected to the other of said lower attachment points being oppositely positioned, the other base joint of said third truss being attached to said central attachment point; said trusses being graphite-epoxy tubes fixedly attach to fittings of said trusses; an equipment support assembly for fixedly holding equipment assemblies, said equipment support assembly having an equipment support frame and a backup frame, said frames having a plurality of frame members composed of graphite-epoxy composite material, said frame members having equipment and mounting tabs and blades mounted integrally thereon, said frames having selectively positioned mounting blades, said equipment support assembly having internal stiffing tubes being connected to said blades; and a plurality of equipment support assembly tubes for fixedly holding said support assembly to said attachment points, said support assembly tubes being composed of graphite-epoxy composite material, said tubes being fixedly connected to blades of said attachment points and of said frames whereby said structural system provides: less than 500 microradians of total angular displacement of a line of sight under operational conditions; less than 170 microradians of total angular displacement of said line of sight on-orbit; and less than 50 microradians per hour angular rate of change of said line of sight during on-orbit operations.