Question

You are designing a spacecraft that will use gallium arsenide solar cells for power production for a near Earth mission. With the following parameters:

Time in daylight = 68 minutes
Time in eclipse = 22 min
Power required in daylight = 330w
Power required in eclipse = 100w
Path efficiency in daylight = 0.85
Path efficiency in eclipse = 0.65

a) What is the power required from the solar array during daylight periods?
b) What is the beginning of life power per unit area of the solar array? Assume worst case sun angle and nominal inherent degradation
c) What is the end of life power per unit area of the solar array assuming a 5 year mission and life degradation per year at 2.75%?
d) What is the required area of the solar array?

Make sure to answer ALL questions please. a-b

Answer 1

Answer : Since you mentioned to answer the subparts a & b,

Time m - 68 min Time in etpe- 22 ght 33o lv ehiod Psa Sa- D'6S 23' L nominal inhe Shad pointed he ben CS Scanned with CamScanner