I've been playing around with base designs in trying to get one on the surface of Minmus to complete a contract I have. I decided that I wanted to fulfill the following criteria:
- must have plenty of solar power and batteries
- must support 6 kerbals
- must have a science processing module
- must have an ore processor unit
- must have a cupola
- must be mobil
- must have docking port
- must have a mining drill and ore tank
So what I came up with in the end was basically a huge lander. I call it the Minmus Explorer Lander MkI:
I just unlocked nuclear engines last in the tech tree and they have a huge efficiency rating, so I used them on the lander for propulsion. This is the final rocket I designed to get her into space:
It's huge, it's expensive, but it gets the job done. Note that this final version of the rocket and lander took FOREVER to come up with. There were lots of failed designs in order to get here. Rockets that never made Kerbin orbit. Landers that didn't have enough delta V to make it to Minmus. I originally had a huge fairing around the lander for better aerodynamics but the weight of it was just too much, it's actually easier to just beat wind drag getting into orbit than it is to lift that much weight up there. I'm certain it could be done better and cheaper. Maybe lifting the lander into orbit as sections, joining them up in orbit like Voltron, an then flying to Minmus, but oh well this works.
Once I got her into orbit with 6 kerbals on board it was time to fly to Minmus!
By the time I got circularized around Minmus I had very little fuel left. The nuclear engines are efficient but weak, so it took some long burns to get here. Luckily though orbital maneuvers around Minmus take very little delta V due to it's low gravity, and the nuclear engines are so damned efficient that a little fuel can go a long way.
I made my descent to the surface using as few thrusts as possible, flying to only a few hundred feet above the surface before braking at all, and by some tiny miracle I managed to land with just fumes left in the tanks!
Once landed it was time to find out if this drill technology could do what it's supposed to do and fill the fuel tanks back up by processing ore. Sure enough, the drill worked just dandy, and after a day or two of drilling and processing, we had full fuel tanks in our little nuclear powered lander! Now I'm free to hop all over Minmus collecting science and then processing the data in the science lab for immensely huge tech gains! I'm pretty sure this little base will easily get me the entire tech tree!
My next goal after this Minmus exploration mission is done:
land on Duna for my first time ever. It's nigh time I get out of the Kerbin sphere of influence and out into the solar system some.