Anne Marie added, "I think we should carry as much of the hardware on Al's list as we can. We will need safe places in case the caves leak our atmosphere and we will need entrance airlocks. And what about living quarters? I don't know about you guys, but I'm feeling a little stir crazy here and we have plenty of room."
"Actually, Annie," 'Becca replied, "we could keep a warp field on inside the caves to maintain atmospheric and structural integrity. Once we get there we might as well put these three ECCs and the warp coil to further use. The ECCs would give us more than enough power to maintain the warp field and to power our entire Moon base. Annie, I do agree though that we should carry everything we can get our hands on, including several kitchen sinks."
"That gives me an idea," Tabitha laughed. "What if we made one of these balls higher than the rest and then warped a large part of some freshwater lake to the cave. We could then set up a gravity-fed plumbing system."
"Brilliant Tabitha! I love it. Then we warp a ball of atmosphere right out of the sky into the domes, and some fruit trees to go with them, and we also abduct some livestock. This place could be self-sufficient in a matter of days! This is great stuff." I was exhilarated with the possibilities. It was cool to take my mind off of the war for a few moments. I think it helped the rest of the crew also.
"Something else, Anson," Tabitha got my attention. "Gravity is much less on the moon, about one-sixth gee. If I understand the warp theory correctly, and I'm sure I don't, couldn't we alter the gravity in the habitat dome to equal one gee?"
"Well, General, it appears to me that you do understand the warp theory," Jim said.
"Right." I laughed. "Jim, calculate a slightly slanted flat space region for me that will add to the lunar gravity to equal one gee."
We spent the next several hours batting ideas around and revising our concepts. By the end of the afternoon we had developed a complete concept plan and a drawing of the underground lunar facility. The facility consisted of the habitat sphere and "green" sphere, a manufacturing cylinder, a research and development cylinder, and there were multiple tunnels connecting them. Of course, there was also a spaceport pad on the lunar surface. The pad would be adjacent to a long wide cylinder that connected to the side of the habitat sphere. Pushing the lunar rock around with a warp field would create the pad. Jim and I were planning to work out a bulldozer scoop-shaped warp-field geometry. Creating cylinders would be easy. Pushing a ball along a straight path would create a cylindrical shaft with spherical ends. Who cared if they had spherical ends?
Anne Marie had the idea of just building a small town with all the infrastructure, power grid that would connect to ECCs, water purification pump and tower, stocked fish pond, living quarters, and anything else we could think of and then just warping that to the main habit sphere. I liked that idea a lot. Since time was a factor, we decided to go with manufactured homes. We would have the first trailer park in space.
Al realized that we couldn't use Jim's approach, which was to make a tiny hole and then expand the bubble. How would we get the town through the tiny hole? So we modified the approach. Instead, we would make a large diameter cylinder with a -spherical bottom. The warp sphere used to make this cylinder would contain the trailer park and all of its infrastructure. Leaving that warp field on, we would then use the bulldozer warp field to push lunar material on top of the bubble to fill the hole. When the hole was filled, we would then oscillate the bubbles' outer Van Den Broeck bubble to turn the lunar rock to magma and then harden the cave. The outer bubble wouldn't allow heat and shock waves into the inner static non-Alcubierre bubble. We would then construct the outer cylinders and tunnels and place the equipment in the right locations. The tunnels and cylinders should be airtight at this point. So, we pressurize them with the liquid air that we brought with us in the External Tanks. We would seal off the airlocks to the outside and then open the tanks and let the air boil off into the caves. When all of the complex excavation and construction is completed, we then would simply turn off the field in the habitat sphere for a nanosecond and then turn it back on immediately but with a diameter large enough to encompass the entire Moon base. Sara had called this the "lights-off lights-on" method. There would be some strange weather for a few moments while the atmosphere reached equilibrium, but if we calculated the pressures right we should be fine. We would bring a butt load of plants and fluorescent lights. The lake would be large enough to support twice the people planned for the facility for at least a year. We would recycle the water and everything else, but we could eventually go back to Earth with new warp ships and pick up more supplies.
But how would we get the water back into the habitat cave? This led us to a solution for heating the caves and choosing a location also. First, the complex would be placed on the far side of the moon and near one of the lunar poles where it's always in the sunlight. Six open shafts would be dug running from directly over the half-acre stand of trees to the lunar surface. Each of these shafts would be roughly ten meters in diameter and would be stoppered by large windows. The windows would be in two layers ten centimeters thick, separated by one meter, and each windowpane would be constructed of spaceframe window materials. The top window would be reinforced by a central hub airlock window one meter in diameter, the hub made of steel I-beams with steel I-beams attached radially to an outer steel I-beam rim. It would look like a bicycle wheel sort of, whereas the hub opened downward. The bottom layer would be supported with steel I-beams the same way but there would be no door. Instead, the window would be uniformly perforated with one centimeter diameter holes over the entire surface.
The windows would allow sunlight to enter the habitat sphere over the half-acre stand of trees. When we needed to bring in new water we would warp the water into the shaft above the window, then extend the main field out past the water holding warp bubble via the lights-off lights-on method. The window central hub door would be opened. Then we would turn off the bubble holding the water and it would become supported by the window. As the water drained through the door onto the bottom perforated window, voila, it would be raining onto the trees below. When the water was completely drained, the airlock would be cycled and the warp fields turned off.
Installing the windows wouldn't prove too difficult. We could countersink the shafts so that they would sit onto a magmified lunar rock windowsill. Then we would seal them off. We might even place a couple windows over the lake, which we planned to be beside the tree grove anyway.
This all seems like a lot of work to accomplish short notice whilst a war is on that we were actively helping to fight. However, the warp field technology really changed the construction paradigm. We estimated it would take less than a day to make the holes and then only a month or so to install most of the hardware. We could use parallel crews to begin manufacturing while the final construction continues.
Of course, there were also some minor details and calculations to be made like what maximum mass could be lifted at what velocities, and how we do that without tipping off our enemy as to what we were doing, how much food, what about the effect of the big heat sink at minus 33 degrees Celsius (the Moon) below us, should we put some high R value insulation under the town, and how the hell would we do that anyway, how many windows are enough to heat and light a two-hundred-meter-diameter hemisphere. Sheesh! You get the idea.
Jim figured out that we could alter the warp bubble for the main habitat construction to the shape of a spheroid. The upper half would be a perfect hemisphere two hundred meters in diameter. The lower half would be a section of a much larger sphere only a few tens of meters deep at the bottom. We would go make the hole first. Come back and pick up a suitable surface area of dirt layered with several feet of insulation then covered with several feet of sand. Place it in the hole and hope the sand kept the nonspace qualified insulation from outgassing while we came back to get the town. Then we planned to pick up topsoil, fill dirt, trees, lake, fish, air, bees, birds, squirrels, and probably a lot more with the town.