ABSTRACT
Conduction is usually the method of moving heat from a hot device to a cold radiator. Electronics are designed to be conduction cooled from a device through the printed circuit board with commonly enhanced printed features such as thermal vias, extra thickness in the copper planes, and so on. Any COTS electronics assembly, which may have been normally designed for ground (terrestrial) applications, must be designed to work in the vacuum of space. Convection cooling can be designed by employing pumped-fluid systems, like how a car radiator removes heat from the engine block by pumping a coolant through a series of tubes that collect the heat and pump it to a radiator. In the case of spacecraft, the radiator is a true radiator that expels the heat by radiating out to cold space.
