Components SOLAR ARRAYS Solar Cell Blankets: • Solar Cells - 2 mil (50 micron) Silicon, 18% Eff. • Radiation Shield - Teflon • Metal Interconnects • Substrate - Teflon & Kapton Film Laminate Weight: 0.06 Ib/ft (0.0282 gm/cm ) Solar Concentrators: 1/2 mil (12.5 micron) Kapton With Aluminized Coating Weight: 0.004 lb/ft2 (0.002 gm/cm ) Busses Including Mast: Aluminum, Transmitting 40,000 Volts Used as Structural Members and Optimized for Maximum Efficiency. Non Conductive Structure: Aluminum, Utilizing a Basic Building Element. Designed for Stiffness & Control Requirements. TRANSMITTING ANTENNA Microwave Antenna Waveguides: 4 Layers Graphite Epoxy, Metalized Internally. 0.002 inch (0.005 cm) per Layer. Microwave Generators: Outputs 4.5 kW Each Weight: 0.5 lb(0.227 kg) Radiators Pyrolytic Graphic Discs 0.72 lb (0.32 kg) CONTROL SYSTEM ROTARY JOINT TOTAL SYSTEM EXHIBIT 4. SSPS MAJOR COMPONENTS
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