ABSTRACT
The study of radiation heat transfer is fundamental for spacecraft thermal control systems. An intelligent thermal control design controls radiation through controlled and calculated insulation protection either to keep electronics from getting too cold or as a power savings approach against wasting excess energy for heater power. Radiation is also designated at locations where plates, or radiators, are positioned at key areas where heat can be radiated into space. Knowing how radiation is enhanced, or prevented, through knowledge of materials, surfaces, and coatings is key to designing the thermal control system. Radiation is also measured and reported as hemispherical or normal, and how each is analyzed is described in this chapter.
