05 Jun '12 21:17>
So a rail service has started on the moon in lunar equatorial region and the train is solar powered, 10 meters wide and 1000 meters long. At the time, solar cells have reached 75% efficiency and last practically forever. The train wants to keep itself at local lunar noon so it the sun is always straight up for maximum solar power and stops and picks up passengers along the way, and just keeps going round and round the lunar equator like that, no fuel needed.
They take excess power and feed it to the rails which power villages along the way.
So how much power does the train generate and how fast does it have to go to stay at local lunar noon?
They take excess power and feed it to the rails which power villages along the way.
So how much power does the train generate and how fast does it have to go to stay at local lunar noon?