Tower Defense Strategy

"Tower Defense Strategy (!

At a time when issues on the ground over the ownership of space-based weapons and the materialization of the black alliance and the Arab League were in turmoil, the future space station is continuing to make various efforts for the future of mankind.

In late November, the future space station ushered in an important guest-Ice Asteroid Supply One.

The development of iron and icy asteroids is not cost-effective from a resource point of view. For an 800-ton asteroid, more than 300 tons of fuel must be burned back and forth, not counting that much fuel, The cost of sending tanks, connecting pipes, engines and other devices into space.

Therefore, at the material level, the development of asteroids at this stage is absolutely at a loss.

But from the perspective of the future, to toss two small asteroids now can accumulate a lot of experience in processing, device design, etc., and even help shorten the preparation cycle of lunar development equipment.

So, what about the things produced from the two asteroids?

The answer lies in the moon.

On November 23, two Homo sapiens, specially trained as pilots, drove the first version of the Yinglong spacecraft with several external cargo boxes on the road.

Unlike previous unmanned lunar exploration programs, this is a high-risk test.

This is because Yinglong will not enter the orbit around the moon, but will transfer the orbit from the earth to the moon and load it directly onto the surface of the moon!

Once it fails, materials containing the metallurgical production of the future space station will be scattered on the moon.

……Because there will be a chance to recycle in the future, after discussion, it is considered that it is necessary to take a little risk.

The flight plan of plunge directly into the moon, compared with entering the orbit around the moon and then landing, the fuel can be saved a little bit in the first half, but it will be retrieved during the landing phase, mainly fast, just like a few days of space docking. The quick docking within half an hour is the same.

If it is fully automatic control, there will still be accuracy problems when directly hitting the lunar surface from the orbit of the moon, but with Homo sapiens robots that can take the initiative to make some changes, the situation is different.

After a day and a half of flight, Yinglong No.1 aircraft came to the moon's polar region forty kilometers.

Without orbiting the moon, follow the calculated transfer orbit and fly directly to the lunar surface at an angle of attack of 20 degrees.

The spacecraft flies in the Earth-Moon system with a maximum speed of less than eight kilometers per second. The farther it is from the earth ball, the slower it will fly.

After the spacecraft breaks through the Lagrangian point (the gravitational balance point between celestial bodies), it is gradually affected by the moon's side gravity until it is locked by the moon's gravity, and finally deducts the moon's own movement speed of one kilometer per second relative to the ground surface. The speed on the surface of the moon is only about Mach three at sea level.

The orbital computing power is a bit higher, and the final relative speed can be controlled within 700 meters per second!

The relative surface speed value measured by Yinglong No. 1 aircraft on the spot was 740 meters per second, and the accuracy of the transfer orbit selection was very high...Well, I moved it with 5% thrust in the middle, and adjusted the result.

Enter the final landing stage.

First unlock the cargo box.

The two cargo boxes are separated by a separator with a weak directional explosion effect, keeping away from the main engine of Yinglong.

Ying Long adjusted his attitude and entered the reverse direction of flight.

wait.

Because the angle of attack is only 20 degrees, the height of 40 kilometers, and even several latitudes around the moon, the waiting process is quite long.

At an altitude of eight kilometers, Yinglong’s main engine ignited and continued to advance for eighty seconds.

The two separated cargo box engines were also ignited once, but the ignition direction was different. The angle between Yinglong’s flame and the ground was the same as its flight angle of attack, while the cargo box was thrust against the sky. , Reduced the forward speed but increased the falling speed.

......In human terms, although the cargo box will hit the moon's surface faster like a meteorite, the landing point will be similar to Yinglong!

At a height of 2,000 meters, the cargo box had been smashed to the ground in advance, and Yinglong turned on the main engine for the second time, ten seconds.

After this advance, the angle of attack disappeared, and Yinglong landed vertically, only affected by the moon's gravity.

One-sixth of the gravitational acceleration was very slow, and in the end only a height of less than three hundred meters was left, and Ying Long ignited a special landing engine in a landing posture.

Finally, the landing speed was 0.6 meters per second.

Because the gravity is too small, Yinglong was bounced up by the landing buffer mechanism. This is because its landing mechanism is not intelligent. The initial setting is "when the cargo box cannot be detached normally" to ensure that the spacecraft will not fall apart, while the Homo sapiens robot I didn't adjust it in time in the last paragraph, so I was a little bit stronger.

Except for this small flaw, the entire operation was very successful.

The distance between the two cargo boxes at the bottom of the last laser positioning before landing was only six kilometers.

Six kilometers? Didn’t you say it’s almost done?

It's still a matter of money.

Because the two containers are loaded with non-perishable parts, as long as the container does not fall and the contents are scattered everywhere, it does not matter whether the container itself is damaged or not. Under this requirement, every extra fuel used is a waste.

Therefore, the deceleration mechanism of the cargo box can only reach the level of barely smashing, resulting in some discrepancies in the landing point.

After landing, the hatch opened, without the Homo sapiens driver, and the other eight Homo sapiens robots carried their toolkits and exited the cabin one by one, began to unload vulnerable cargo, recover the fallen cargo hold and cargo, and prepare for the construction of the first phase of the project.

According to the latest version of the Moon Development Plan, Homo sapiens robots will prepare a two-story small base with an area of ​​close to 300 square meters for follow-up personnel and robots.

For the first time, the small base will use a five-stage air pressure distribution to enter and exit the zone, and to achieve frequent entry and exit through the smaller air pressure span of each section.

For example, in the existing decompression chamber, it takes at least a few minutes to change from the pressure in the ordinary chamber to the vacuum. The longer the waiting time, the closer to absolute vacuum, and the closer to zero the loss of gas resources.

At the New Moon base, the air pressure changes only one-fifth in each section of the entry and exit zone.

In normal times, the five-stage air pressure layout can increase the frequency of personnel entry and exit. When several batches of personnel enter and exit separately, they can be in the decompression and pressurization phases in different sections at the same time when they act in opposite directions; in emergency situations, such as external fires, they can also High-speed customs clearance can be achieved at the expense of a small amount of gas resources, and the entire five-stage process does not exceed 20 seconds.

If it weren't for the lunar developable resource expectations, one would never dare to use such an extravagant access mechanism. Only this new set of access mechanisms, including the equipment area, would take up one-third of the space on the first floor.

In addition, air pressure management, carbon dioxide regeneration, water circulation equipment, and solar installations with a power generation capacity of no more than three kilowatts will be deployed in advance.

……Gone.

The first phase of the project is not enough to realize the follow-up staff to settle in, mainly for... first planting the land.

The people of country C will jokingly say: Our goal is to grow vegetables in the entire universe.

The importance of farming on the moon is even more important than mineral development, because using traditional rockets to send two tons of cargo to the moon requires at least one rocket of more than 700 tons.

Every bit of food self-sustaining ability means that the pressure on the cargo line from the low earth orbit to the lunar surface is reduced. Poor farming can even lead to a long period of time, unable to maintain a team of more than four people on the monthly table.

Since the vacuum environment of the moon table automatically solves the problem of food storage, after the completion of the first phase of the project, once the Homo sapiens and robots break through the ice layer, they will begin to grow a small amount of vegetables and store them in a low-temperature vacuum chamber.

By the way, the existence of ice is the only reason to choose to develop in the moon's polar regions.

During the construction of the first phase of the project, at least two batches of goods will be "smashed" over, among which there will be key materials for soil improvement, human excrement.

Human excrement is not a good choice for synthetic soil, but the existing aerospace conditions are not enough to raise a large number of herbivores in space, not to mention birds, you can only make do with humans and additives.

This project is to prepare for the subsequent special plant breeding cabin, which is a kind of building similar to the glass greenhouse planted on the earth globe.

Anyway, the moon table is far away from the people entering.

If the surface situation is critical and there is a foundation for the first phase of the project, it would not be difficult to urgently expand a lunar base that can live on for dozens of people, but if it does that, the first group of lunar men will probably have to worry about survival for their entire lives. At least one more generation will be required to enter the production stage.

In addition to the lunar surface base, another new project is being launched simultaneously, and it is the main consumption point of the existing space processing capacity.

Synchronous orbit permanent residence space station!

The existing space station is due to gravity, and humans live in it. Even if they spend a lot of time exercising, their heart function will still slowly decline, and they cannot take on the task of permanent residence.

After all, the human species was not designed and evolved for life in space.

Therefore, a space station with gravity is the ultimate solution to the fire of human civilization.

By the way, the design of the future space station takes into account that additional core components can be loaded at critical moments, and the cabins can be reorganized to realize the rotation motion to simulate gravity.

But doing that on the one hand, because "gravity" constrains humans to the ground, the utilization of the space in the cabin will be reduced, and the key extra-vehicle processing and assembly capabilities will be lost (non-fixed cargo outside the cabin will be thrown off), so it is not a last resort. Will not change.

The crisis of surface monsters continues, and the scale of human industry will gradually regress. We cannot expect to see good luck every year in the future as well as last year. After all technical reserves, experience, and projecting capabilities have reached a sufficient level, Country C has decided to formally start the construction of the synchronous orbit permanent residence space station.

Its core frame is still manufactured by the zero-gravity processing equipment of the future space station.

The core framework has three components.

One is the support structure. There is nothing to say about this thing. It is a thing with three pillars protruding from the center of the circle. The key is the cabin fixing fixture and the welding fulcrum.

The second module is the momentum wheel module, which is divided into two types here~www.wuxiaspot.com~ One is the momentum wheel that allows the space station to rotate without turning the core, and the other is the momentum that allows the entire space station to change its flight attitude. The latter is responsible for assisting the alignment of the solar array, as well as assisting the mooring of the spacecraft and cargo hold.

The last is a set of high-complexity comprehensive berthing sections. In addition to the subsequent expansion capability of the port, the main function is to be able to rotate in multiple directions without stopping the rotation of the space station, and to achieve synchronous rotation. Complete the transfer of cargo and personnel in the cabin under the premise of transfer.

Next, to adapt to the local technological strength of Tuqiu, the Death Scepter II, which has been improved and designed, will also be deployed with the synchronous orbit permanent residence space station. It can be docked with the axial connector when needed to facilitate ammunition supply Repairs, upgrades, etc.

The project will make extensive use of materials from empty capsules and cans that were sent to orbit earlier, and additional materials will be launched from the surface.

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