Abstract: A spacecraft multilayer insulation blanket is made from multiple sheets of polyimide e.g. KAPTON. A preferred six sheet embodiment employs three carbon loaded sheets (26, 32, 34) separated by two dielectric sheets (28, 30). A third dielectric sheet (36) insulates the carbon loaded sheets from the spacecraft body. The outermost carbon loaded sheet (32) has a high resistivity and is primarily transmissive while the other two carbon loaded sheets (26, 34) have a low resistivity and are primarily reflective.

Abstract: A switch (11) for a square coaxial network includes a lower housing (13), a rotor assembly (21), alternative transmission lines (19), and an upper housing (15) with a main transmission line (17). The rotor assembly includes a rotor (23) for selectively coupling the main transmission line to a selected alternative transmission line. The rotor is coadapted with each transmission line for resonant coupling therewith. A conductive shield (29) rotates with the rotor and isolates it from the unselected alternative transmission lines. A low-friction dielectric guide (25) helps provide proper spacing and coupling of the rotor and the square center conductor (35) of the selected alternative transmission line. A low-friction dielectric bushing (27) serves a similar function for the rotor and the center conductor of the main transmission line.