Consider the spherical satellite of .130.Instead of the

Chapter 12, Problem 12.137

(choose chapter or problem)

Consider the spherical satellite of 12.130.Instead of the entire satellite being coated with amaterial that is spectrally selective, half of the satel-lite is covered with a diffuse gray coating character-ized by ?1?0.6. The other half of the satellite iscoated with a diffuse gray material with ?2?0.3.(a) Determine the steady-state satellite temperaturewhen the satellite is on the bright side of the earthwith the high-absorptivity coating facing the sun.Determine the steady-state satellite temperaturewhen the low-absorptivity coating faces the sun.Hint: Assume one hemisphere of the satellite isirradiated by the sun and the opposite hemisphereis irradiated by the earth.(b) Determine the steady-state satellite temperaturewhen the satellite is on the dark side of the earthwith the high- absorptivity coating facing theearth. Determine the steady-state satellite tem-perature when the low- absorptivity coating facesthe earth.(c) Identify a scheme to minimize the temperaturevariations of the satellite as it travels between thebright and dark sides of the earth