After the decision to implement the nuclear program, Xinyuan carried out the formal development of the lunar landing program within the company.

Seven or eight engineers and Lin Ju stayed in the dark room, brainstorming together.

First of all, what to prepare for landing on the moon?

First, you need to complete at least one unmanned lunar exploration and launch a satellite to reach or fly through the lunar orbit to find a suitable landing site.

Second, communication relay satellites, especially when it is necessary to carry out missions on the far side of the moon, because nothing can be sent out with their backs to the earth, there must be relay satellites orbiting around the moon;

This relay satellite can be launched in advance, or it can be launched later with a lunar spacecraft.

Third, landers, return spacecraft, and landers, which in the past were launched into lunar orbit by giant rockets as a whole as a lunar spacecraft, as was the case with the Apollo program and the N1 rocket planned by the former coalition to the moon.

After the internal proposal of the moon landing plan, Xinyuan's engineers thought much more thoughtfully and wrote two versions of the moon landing draft:

The first is that NAPE is not put into service on time and is more conservative.

First, a Xinyuan-2A, that is, Xinyuan-2 in the CBC configuration, with a lunar transfer orbit capacity of 50 tons, will send a large module to the lunar orbit as a space station.

Then the two-stage rocket in the middle was canceled, and a large space shuttle was hung on the side to carry out the moon landing.

The H2 large space shuttle is manufactured, with a length of about 74 meters, a dead weight of 85 tons, a maximum take-off weight of 132 tons, equipped with three A100 nuclear thermal engines, 12 tons of methane, which can carry a crew of 5 people, and the service cabin and crew cabin add up to a total of 70 cubic meters of space.

H2 can first use an unmanned mission cargo compartment to send 35 tons of payloads, including lunar rover, habitation module, and nuclear power plant; After H2 docked with the space station, four of them landed on the moon with a 30-ton lander, and returned to the lunar orbit by the ascender after completing the mission, docking the ascender with the space station to wait for reuse.

Then the 5 crew members took the space shuttle and returned to Earth, perfectly.

Second, NAPE was successfully developed as scheduled.

The XN90 planetary spacecraft using 6 NAPEs was manufactured, taking the initials X of Xinyuan, the atomic power N, and the number was about 90 tons, and it took off from the ground to space by itself, and then refueled the space station in Earth orbit to fly to the moon, landed, took off back to Earth orbit, refueled the space station, and landed to the surface.

The XN90 can also carry 5 astronauts, integrating the return capsule, orbital module, lander, and ascender.

Landing and take-off are just like in the Star Wars movies, spewing flames and flying into the universe, science fiction level MAX.

However, although the two plans are very different, they can both use the circumlunar space station and launch the lunar base that has been unbuilt in the past.

Guo Shen planned the preliminary preparations that Xinyuan can do now:

Two satellites will be launched into lunar orbit, one to detect where water may exist on the far side of the moon, and one to maintain uninterrupted contact as a communications satellite.

Once you find a water source, you can use Xinyuan-2 or Xinyuan-3 to build a base, a power station, a living module, a spacecraft landing site, and a fuel station that can synthesize methane.

Then there's the circumlunar space station, which provides a place to live and in-orbit fueling, and the lunar fuel station can be transported up with methane by an unmanned reusable liquid oxygen methane fuel ascent.

and the construction of a near-Earth space station, which can be operated together with the Tiangong space station or independently.

Whether it's the H2 or the XN90, they all use these facilities.

The above missions require five to six launches of giant rockets such as Xinyuan-2A or Xinyuan-3, plus space stations, etc., with an initial investment of 8 billion yuan (internally priced, not disclosed).

The cost of the H2 or XN90 will be 2 billion to 4 billion yuan, which is very expensive.

The NAPE and A100 nuclear propulsion programs cost less than 30 billion yuan, and the budget for the entire lunar landing program is initially positioned at 40 billion yuan.

Do you think that's the end of it? No.

With regard to the near-Earth space station, Anderov proposed a new idea.

The "Forward" large centrifugal space station, with a radius of 60 meters, rotates at 2 revolutions per minute, and can generate 0.28G gravity.

The space station consists of two longitudinal core modules with a diameter of 14 meters and a node module in the middle as a rotating center, radiating out six spoke modules to connect the outer ring of the cabin.

There are 12 compartments on the outer ring, which are rectangles with a side length of 11.8 meters, 6 of which are connected to the spoke compartments, which are connected to each other by a circular pipe.

The two large compartments and one nodal compartment of the axis weigh a total of 220 tons, the six connecting channels are 5 meters in diameter, 43 meters in length and weigh 30 tons, the centrifuge cabin is 44 meters in length and weighs 90 tons, and the connected environmental pipes weigh 5 tons each.

The assembly mass is 220 + 30 * 6 + 90 * 12 + 5 * 12 = 1540 tons, and it can exceed 1800 tons after adding fuel or materials

Of the 12 centrifugal cabins, 6 are crew cabins providing 2,400 square meters of space, and 6 service cabins for electricity, fuel, and reserves.

The overall occupant activity space is up to 32,000 cubic meters.

There are also 4 large docking ports on the axis, which can dock the XN90 spacecraft or the H2 and H1 space shuttles, but there must be two balances on the symmetry plane for rotation.

This will be humanity's first centrifugal low-gravity space station, which can exceed 2,000 tons by docking two H2 or XN90.

What's more, 0.28G gravity coupled with continuous exercise is enough to ensure that astronauts do not suffer from serious physical decline in space for two years.

In two years, the application of nuclear rocket engines has been able to complete the exploration of any planet in the solar system.

At that time, the Enforward space station will be able to rely on adding no more than 500 tons of mass to the axis, adding a propulsion module containing nuclear engines and fuel.

Of course, the overall budget of the Qianjin is also relatively high, with a total of 14 launches of the Xinyuan-3 giant rocket in 14 large modules, 6 H2 deliveries in the 12 arc-shaped pipe-connected modules, and 6 spoked modules in groups of 33 to be launched by two Xinyuan-3.

A total of 16 Xinyuan-3 giant rockets will be launched in each part alone, and 6 Xinyuan-2A giant rockets will be launched to transport H2, and the rocket launch cost will be 8.78 billion yuan.

As for the cabins, 500 million are needed for each of the 6 service cabins, 800 million for each of the 6 living cabins, 800 million for each of the 2 core cabins, 300 million for each of the 6 spoke compartments, and 100 million for each of the 12 arc-shaped pipe connection compartments, for a total price of 3.94 billion.

Two H2s are on duty alternately, with a R&D cost of 4 billion yuan and a single flight mission cost of 100 million yuan for 6 flight missions.

Therefore, the total cost of the advance space station is 87.8 + 39.4 + 40 + 6, which has come to 13.7 billion.

But this is all ideal, and if you count other expenses, it will cost about 16 billion yuan.

In fact, Anderov has a further idea for the forward space station, that is, to let the centrifugal section rotate, and the central axis module does not rotate, and two large slip rings need to be made.

This slip ring must ensure strength, air tightness, low resistance, signal nuclear power interaction, etc., and the problems caused by this structure are quite complex.

Not to mention the air tightness, just talking about the resistance, the centrifugal part is a mass of 1000 tons, even if the friction coefficient is very low, it will bring huge deflection torque to the central shaft section, and it is very troublesome to solve.

Bearings are not good, Anderov envisioned magnetic levitation, a high vacuum between the inner and outer rings of the slip ring, and then use magnetic force to levitate it, with almost no resistance.

However, airtightness is a big problem, and the connection may have to withstand the strength of the acceleration, etc......

In the end, I simply gave up this idea, and I will talk about it later, so let's use it at this stage.

The solution to the problem of docking is also relatively simple, that is, don't turn it, stop it when docking.

At the end of the Qianjin space station, which rotates at a speed of 2 revolutions per minute, the maximum speed is only 13 meters per second, and it does not take long to slow down, but the astronauts in the living module need to clean up well, so as not to make a mess of the living module due to weightlessness.

Anyway, it's a product of verification, and this shortcoming is tolerable, even if it's stopped once a month, it's acceptable.

And to change the near-earth space station of the lunar landing program to Forward, the budget will not be 40 billion but 50 billion.

How much money is left in Xinyuan's account now? In addition to the launch site, the construction of the B-class base, rocket manufacturing and personnel expenses, the company has almost 14 billion yuan of funds left......

Don't forget, the nuclear propulsion team will need 8 billion in the early stage, and the total planned expenditure will be 30 billion.

There is still almost 5 billion in the final payment paid by Aber, so there is still a gap of 11 billion in the nuclear propulsion team.

In total, Xinyuan Aerospace Power must raise at least 39 billion in the next three years or so......

Lin Ju: Abel, come over here.

(End of chapter)