1. The problem statement, all variables and given/known data Consider what would happen to the temp of a solar array when a solar spacecraft gets into an eclipse. Distance to the Sun is 1 AU and Fs = 1368 W/m2 Consider an infinitely thin flat panel thermally isolated from the spacecraft. Assume the Specific Heat Capacity is 8.0 Kj/K-m2. Also assume the pamel material has infinite thermal conductivity. In daylight, the solar array is normally illuminated by the solar radiation, and it quickly reaches equilibrium temp. Assume panel absorptivity [tex]\alpha[/tex] = 0.84 and it's IR emissivity [tex]\epsilon[/tex]=0.74 (a) Calculate solar panel equilibrium temp under solar normal illumination (b) Estimate solar panel temp by the end of the longest possible eclipse (71 min) 2. Relevant equations for (a) T = ([tex]\alpha[/tex] * Fs) / (4*[tex]\epsilon[/tex]*[tex]\sigma[/tex]SB) --greek letters not to be superscripted (i.e. [4*e*sigSB]) I have no idea what equations should be used for (b) I have looked at Q = m*c*[tex]\Delta[/tex]T Q = e*sigma*A*[tex]\Delta[/tex] T Q = (A*[tex]\Delta[/tex] T) / H 3. The attempt at a solution From my calculations I got that the temp = 287.65K I am completely lost as to where to begin for the temp at the end of the eclipse. Any help or advice would be greatly appreciated.