1. Thermal Control Subsystem
Passive Techniques
Paints – White and Black
Multi-layered Insulation
15 layers
Betacloth, aluminized Kapton
Dacron Netting, Kapton laminate
Thermal Switches
Diaphragm Thin Plate Switch (Paraffin)
Between heat generators and sinks
High conductance cold (mounting) plate
Active Systems
Electrical Resistance Heaters
Tayco solid-state controller
Variable Radioisotope Heater Units
50 Employed (50 Watts)
Cassini-Huygens (117)
10 VRHU containers
Variable Conductance Heat Pipes
Aluminum(1.27cm) & Ammonia
Integrated with radiator panels
Axial groove composite wick
MLI – exposed separator layers shown