Along the way, Professor Yang Hua discovered that the main construction material here is cement; however, because of the indoor construction, ordinary cement is used, not the quick-drying toxic cement; and the rest of the structure is either steel or aluminum. There is no other material. Some places that require plates are basically made of aluminum.
Facing Professor Yang Hua’s question, Wang Qingwei explained: “In the long run, steel can be used for hundreds of years, and it can be used for thousands of years if maintained; aluminum is used to fill parts of construction with lower requirements, and now it is used Concentrating technology has enabled the self-production of aluminum on the moon, which is a stainless and cheap metal.
In comparison, the status of aluminum on the moon is almost the same as that of plastic on the earth. It is an extremely cheap and excellent material. Therefore, there are very few plastics in current construction on the moon. After all, plastics also require blood transfusion from the earth.
Well, and on the moon, aluminum is not only self-sufficient, but it is also the only material whose cost is lower than that on Earth. So it has to be adopted in large quantities. ”
"Oh..." Professor Yang Hua was thoughtful. Wang Qingwei's words forced Yang Hua to start thinking again about the construction plan of the lunar ejection base. I didn’t expect that plastic would be much more expensive than aluminum in space!
According to Wang Qingwei, the cost of aluminum materials produced on the moon using technologies such as condensation and photovoltaic cells is even less than half that on earth! On the contrary, because plastic requires blood transfusion from the earth, the price is thousands of times higher than on earth! The increased costs are mainly transportation costs.
In particular, Wang Qingwei vaguely revealed that due to the abundance of aluminum on the moon, its low cost, and the convenience of smelting, etc. Gaoshou Company is considering building a space factory with aluminum as the main body. In fact, in some aspects, aluminum can completely replace steel or even surpass it.
The accommodation arranged for these people is a newly built temporary residence. Each room is 3*5 meters in size. There are three three-layer aluminum structure beds inside. The height of the room is ten meters, and there is a blue ceiling above the head. Covered top, with a little bit of dreamy beauty. The five-meter-high walls below the room are isolated with cement; the upper walls are isolated with simple aluminum panels. They are all temporary residences. Wait for the completion of construction in other places in the future. These places are to be demolished.
"Gather together! The new staff come out to gather and give a lecture!" An arrogant voice came from outside; but it cannot be said to be arrogant, it can only be said that the tone is too loud! Lessons...
There are only less than 30 people who give lectures. A simple outfit. It is a garment made by a master company that imitates military clothing. It is also one of the work uniforms in the master company. "Hello, I am the residence manager in this area. If you have any questions, you can come to me. My room is No. 001, which is easy to find. My name is Feng Haitao. < br>
In addition, there are some things you should pay attention to; they are closely related to you, so listen up.
First of all, any material in space or on the moon is very precious. Even a garbage bag is worth more than the same weight of gold. At least, the gold in space is just an ordinary metal. Therefore, please learn to save; if you are found to be wasteful, you will be warned for the first time, fined for the second time, and evicted for the third time. Expert companies don’t need low-quality talents! Even if you are a relative of boss Zhang Jingyuan, you will be expelled.
Second point, your room is not well soundproofed, please don't make any noise. If you are found to be disturbing your neighbors' rest, you may be punished by cleaning toilets. This is an industry that is very short of manpower! I welcome you all!
The third point is to have a strict schedule. What we use here is military management, and we still use the time on earth. Please adjust your time. Eat at 7 o'clock every morning and start working at 8 o'clock; eat at 12 o'clock at noon and start working at 13 o'clock; eat at 17 o'clock in the evening and start studying, bathing, organizing personal belongings, contacting family members, etc. at 19 o'clock; and start resting at 22 o'clock late at night. Time passed and there was no food to eat.
Fourth, water is scarce. Drinking water, bathing, etc. add up to only 0.5 cubic meters per person per day. It should be said that it is enough; if it is still not enough, please pay a supplementary fee of 10,000 yuan per cubic meter.
Finally, you have two days to adapt; after two days, no matter what you do, you will need to work hard. Otherwise they will be sent back to Earth. And it will cause you to lose access to the core levels of the company.
The future is in your hands, just work hard. All the details are here, one copy per person; keep this book clean and complete and return it when you leave. Each person damaged will be compensated 10,000 yuan! ”
"So picky..." Liu Kaixing muttered quietly.
"Drink, little guy, you don't know how expensive firewood, rice, oil and salt are. Let me tell you, this booklet in your hand was sent from the earth to the moon and is now worth up to 8,000 yuan! It contains general space survival knowledge , self-rescue methods, precautions, work requirements, etc. If you want to survive in space, you'd better memorize the contents and don't miss any punctuation. This is for your own good!
"Oh..."
"Of course, you don't have to worry. The company has always been clear about rewards and punishments; if you do well, you will definitely be rewarded beyond imagination. In this aspect, the company is doing the best in the world." Feng Haitao said later. , I’m already feeling a little carried away...
On December 24, 2051, Liu Kaixing began to lead his team to work. The location chosen is about five kilometers away from the Guanghan Palace forward base. This is taking into account the future expansion of Guanghan Palace's advanced base. In particular, there is a relatively solid rock ground here, which is conducive to the construction and expansion of the projectile base in the later stage.
"Start!" Professionals do professional things! Liu Kaixing is actually a high-end soy sauce pot - at least for now. As a young man, you still want to be a little lazy when you can. The specific measurements and calculations were carried out by these newly recruited experts. Of course, don't underestimate these middle school students in expert companies; although they lack experience, some fantastic ideas, some routine calculations, etc. are no longer difficult for them.
"I think there is something wrong. I always feel that we overlooked an issue when we were calculating. But I can't remember it for a while!" At the last moment, Liu Kaixing was a little doubtful about the final result.
"Impossible! I calculated it based on the data provided by the company. Moreover, there is no problem with the on-site measurement." Old Professor Yang Hua was a little proud. Although the master company is good, he is still very confident in his professional field.
"Then build a test orbit first and temporarily eject one kilogram of objects in the direction outside the solar system; be careful not to hit any man-made objects in space."
"Okay!" Although he was a little restrained, Professor Yang Hua had to give in under the "silver" power of the master company. "According to calculations, the space factory will fly around the moon at a position of 200 kilometers, with a linear speed of 1.32 kilometers per second; the gravity of the moon Take 1.63 Calculation. Because there is no air resistance, we can calculate it as follows: Depending on the mass of the object, we finally get the required electric energy formula: mx (242+9) degrees. m represents the mass of the object, in kilograms <. br>
Among them, 242 degrees of electricity is the kinetic energy of 1.32 kilometers per second per kilogram of objects; 9 degrees of electricity is the potential energy of every kilogram of objects at a height of 200 kilometers on the lunar surface.
In order to facilitate calculations, I have converted all energy into electricity statistics to facilitate later calculation and management.
According to the formula, if it is just a one-kilogram object being ejected, according to the current energy density of the guide rail at a maximum of 1000 degrees per meter, we will not even use one-third of the power.
Okay, let's connect the power now and prepare..."
Whoosh... The prepared standard one-kilogram steel weight flew out instantly, twice as fast as a bullet, and violently rushed into space at an altitude of dozens of kilometers. However, the good times did not last long, and it began to fall under the tracking of satellites, and finally hit the surface of the moon.
……
There is nothing wrong with the calculation... Professor Yang Hua frowned.
However, at this time, Liu Kaixing jumped up happily, "I remembered. We forgot to calculate the time for the work done by the moon's gravity. We adopted an oblique launch direction, which increased the time for the moon's gravity to act on the weight. As the action time increases, we need more force to overcome gravity! ”
Well, our great professor made an oversight on this small issue.
"Wait, there is another question!" The first female professor who competed for the position was more attentive. "What we are calculating now is only the launch of one kilogram object. But to meet the needs of space construction, we must launch one ton, Objects with masses of ten tons or more
Let’s do some rough calculations. According to the current maximum energy density of the guide rail of 1000 degrees, it would take one meter of guide rail to send almost three kilograms of objects. If an object weighing three tons is sent, a guide rail of 1,000 meters in length is needed.
According to the development speed of Gaoshou Company, there may be guide rails with a length of two thousand meters or more in the future.
But as the guide rail is lengthened, we have to consider another force, the Lorentz force! Maybe it won't show up if it's a few meters long; but if it's several thousand meters long, this force cannot be ignored. "Uh...that's a problem! After a failure, everyone no longer takes it for granted. After discussion, they are ready to overthrow the previous data and start over again! It was only after the failure that I discovered that science is not a game, and it is not possible to take it for granted!
But no one saw, hidden behind the helmet, Liu Kaixing was thinking; this was Liu Kaixing's first real thinking, not the kind of pretending to be deep. This failure, as well as the old professor's arrogant and somewhat lax attitude, gave Liu Kaixing some ideas of his own! (To be continued...)