Factors affecting the equilibrium temperature of a spacecraft surface are described in this Part 3 using simple geometrical configurations and basic assumptions.Methods for conducting calculations on the affect of Solar, planetary and albedo radiation are given taking into consideration the internal and immediate environmental factors and incorporating the various configurations and dimensions of the constituent parts.The Thermal design handbook is published in 16 PartsTR 17603-31-01 Part 1Thermal design handbook – Part 1: View factorsTR 17603-31-01 Part 2Thermal design handbook – Part 2: Holes, Grooves and CavitiesTR 17603-31-01 Part 3Thermal design handbook – Part 3: Spacecraft Surface TemperatureTR 17603-31-01 Part 4Thermal design handbook – Part 4: Conductive Heat TransferTR 17603-31-01 Part 5Thermal design handbook – Part 5: Structural Materials: Metallic and CompositeTR 17603-31-01 Part 6Thermal design handbook – Part 6: Thermal Control SurfacesTR 17603-31-01 Part 7Thermal design handbook – Part 7: InsulationsTR 17603-31-01 Part 8Thermal design handbook – Part 8: Heat PipesTR 17603-31-01 Part 9Thermal design handbook – Part 9: RadiatorsTR 17603-31-01 Part 10Thermal design handbook – Part 10: Phase – Change CapacitorsTR 17603-31-01 Part 11Thermal design handbook – Part 11: Electrical HeatingTR 17603-31-01 Part 12Thermal design handbook – Part 12: LouversTR 17603-31-01 Part 13Thermal design handbook – Part 13: Fluid LoopsTR 17603-31-01 Part 14Thermal design handbook – Part 14: Cryogenic CoolingTR 17603-31-01 Part 15Thermal design handbook – Part 15: Existing SatellitesTR 17603-31-01 Part 16Thermal design handbook – Part 16: Thermal Protection System