Aeronautics and astronautics – Spacecraft – Spacecraft formation – orbit – or interplanetary path
Patent
1995-11-30
1997-05-06
Ellis, Christopher P.
Aeronautics and astronautics
Spacecraft
Spacecraft formation, orbit, or interplanetary path
244121, 244 1A, 136292, B64G 158
Patent
active
056263147
ABSTRACT:
A passive intermodulation shield (10) for a spacecraft is made from a substrate (12) and a vacuum deposited aluminum layer (14) over the substrate (12). The substrate (12) can include a polyimide sheet such as Kapton. The vacuum deposited aluminum layer (14) has a thickness (16) to produce a surface resistivity which maintains both the inherent passive intermodulation generation and the passive intermodulation passthrough below a predetermined value. Preferably, the surface resistivity is selected between 10 ohms per square and 40 ohms per square. Spacecraft multilayer insulation blankets (30, 40, 50, 60) are formed by disposing the passive intermodulation shield (10) between a pair of outer layers.
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Reeve, Ronald T.; Jet Propulsion Laboratory, California Institute of Technology, "Thermal Redesign of the Galileo Spacecraft for a VEEGA Trajectory," Journal of Spacecraft and Rockets (Mar./Apr., 1991).
Stultz, James W.; Jet Propulsion Laboratory, California Institute of Technology; "Thermal Design of the Galileo Spun and Despun Science," Journal of Spacecraft and Rockets (Mar./Apr. 1991).
Tsunoda, H., et al.; NTT Radio Communication Systems Laboratories, "Thermal Design Verification of a Large Depolyable Antenna for a Communications Satellite," Journal of Spacecraft and Rockets (Mar./Apr. 1992).
Larson Jodi L.
May Judy V.
Reynolds Robert L.
Denson-Low Wanda K.
Ellis Christopher P.
Gudmestad Terje
Hughes Aircraft Co.
Leitereg Elizabeth E.
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