Tower Defense Strategy

The ice reserves next to the Moon Palace have been calculated, about 200,000 tons, and there is a greater possibility that there will be additional ice in the deeper layers, but it is expected that the ice will be thinner and have fewer reserves.

　　 In the short term, don’t worry about water. The Yinglong No. 2 boarded by the six new members is full of food and mainly canned soft and hard meat, seasonings, and chocolate.

　　 Arrived in the room assigned to the Moon Palace, rested for a while, and had a meeting.

　　 The small smelting plant area has been completed, and the next work focuses on four items.

　　 The first item, the smelter enters trial production.

　　 The first phase of the goal is to produce pressure-resistant glass.

　　 Various smelting activities on the surface consume oxygen, which is different in space. Because gas resources are very scarce, all waste must be recycled. After the entire process is completed, oxygen will increase instead.

　　 However, the equipment in the current smelter is not perfect. Most of the recovered oxygen cannot be purified to medical grade and can only be used repeatedly in the factory.

　　The materials used to produce glass come from two sources.

　　 One is an impact crater five kilometers away. This crater is still relatively new. There are a large number of high-temperature glass crystals. The content of silica is determined to exceed 80%, which is the highest purity material in the exploration range.

　　 Another bauxite mine is relatively close, four kilometers away from the base.

　　 The journey on the moon is different from the surface of the moon. It is a whole piece of big rock, and the composition is relatively more complicated. If it is placed on the surface, industrial use will not be given priority.

　　Aluminum, as a kind of active metal, can be made into alumina glass. It is actually pure alumina, but it is transparent, so it is called glass.

　　 Its strength is higher than bulletproof glass, and the ground production cost is about four to five times that of bulletproof glass. Generally, armored vehicles are not willing to use it.

　　 can be in a vacuum environment, the cost is considered later, first look at whether it is good or not to use.

　　 Ordinary pressure-resistant glass is a branch of tempered glass, which is generally used for high-pressure vessels, instrument panels, high-pressure pipeline observation windows, etc.

　　 is limited by the nature of the glass itself, it can't be done too much. According to calculations, used as a moon watch greenhouse, a single piece can only be 12mm thick and 6 square meters, and the middle cannot be spliced, and structural parts must be used for stability.

　　 There are more structural parts, which will affect the light transmission rate of the glass greenhouse. The light in the polar environment is inherently poor. If the light transmission rate continues to decline, more artificial lighting is needed to promote plant growth.

　　The strength of alumina is much greater, not only can it be made larger, but the connection structure can also be airtight.

　　 Another difference is craftsmanship.

The only industrial production method for large-area flat glass is float production. The glass solution is poured on the tin solution, and the lower surface is naturally leveled through the buoyancy and the huge tension of the metal solution, and then the upper surface is scraped and left to eliminate fine lines. .

The production of float glass requires a huge tin solution tank for continuous production. The monthly performance obviously does not have that condition. A float workshop that has been built can only produce glass with a total area of ​​more than ten square meters at a time, and it will be less than ten square meters after being cut into rectangles. . Because of the low gravity of the moon, the float production time will be lengthened, and 100 square meters can not be produced in one day.

The situation of 　　 alumina is slightly better, but it is not the main production target of the factory itself, and the production capacity is around 200 square meters per day based on the area. Using the bauxite found now, the production of alumina requires more than a dozen raw material processing processes than the production of glass. In addition, aluminum purification itself is a huge energy-consuming link, and the overall power consumption is about seven to ten times that of glass.

　　According to the results of a ten-person team meeting with the surface, it was decided to first use the aluminum ingots sent by the earth ball as raw materials, first produce a few hundred square meters of alumina glass, build the glass greenhouse, and give it to botanists to use.

　　 The second task is the expansion of the Moon Palace base and its ancillary facilities.

The total area of ​​　　 Moon Palace is only more than 300 square meters. Since then, it has been busy with no effort to expand. Now the number of personnel has reached ten, and there will be more in the future. Expansion is inevitable.

　　 Part of this work was completed by the robotics team before the six-person team arrived. However, in the lunar surface gravity environment, the robotics team also had a lot of work that was not easy to do.

　　 According to ground instructions, a new building will be constructed in this phase.

This building is based on information collected by early robots, professionally designed and scientifically demonstrated. The bird’s-eye view is roughly "l"-shaped and covers an area of ​​nearly 500 square meters. There are some curved surfaces for viewing, and these viewing windows will also Use alumina glass.

　　The first phase of the new building is four floors high. It is a patio-shaped hall from the five-stage entrance and exit. With good bounce ability, you can try to jump directly to the third floor.

　　Considering the risk of gas leakage, pressure doors are installed between the hall and all aisles. If necessary, all parts of the building can be closed by area, or conversely, the hall can be closed.

　　 When the hall is closed, a new type of equipment used on the gantry spacecraft is used, a canned spacesuit storage cabinet and a decompression chamber.

　　 is slightly different from the usage on the spacecraft. The emergency cabinet in the new building can be opened manually. That is, the astronaut can open it on either side of the hall or a certain area, put on the space suit and then get into the cabinet, and then exit from the other side of the wall after decompression.

In addition, each area has a lounge of less than 20 square meters. The upper and lower four floors can be opened as additional escape routes. The lounge has been additionally enhanced and is equipped with a separate air pressure management system, which can be used when the whole building loses pressure. Maintain 0.3 to 0.5 standard air pressure.

　　The new building has made great efforts in terms of safety, and even leaves room for additional floors, up to seven floors.

　　 The fifth to seventh floors are the second phase of the project. Until it is finished, the new building will not have its own signal antenna, and can only exchange data from the old building through optical cables.

　　 The construction of such a building on the moon watch is quite large. It is unrealistic to use all light metal and ceramic precast parts. It will be the first time that the moon watch uses concrete.

　　 Moisturizing and heat preservation are required during the concrete solidification process. The robot built three sets of concrete precast workshops in the early stage.

　　 This kind of prefabrication workshop is a bit like a kiln. The temperature of the water during solidification is controlled by external equipment. After the time is up, the remaining gas is pumped out by a pump, and a wall is directly opened for subsequent use.

The cement used in 　　 will be produced in the factory area, mostly semi-finished products sent from the surface, a small part of the active ingredients in the aluminum ore are added with volcanic ash-like substances collected from a few kilometers away from the moon's surface, and the sand and gravel part of the concrete is made on-site.

　　Because of various conditions, it cannot be compared with the ground. The project is expected to take half a year.

The time span is long, and the old building is obviously not enough, so there is also an expansion plan over there, mainly completed by robots. The expansion covers an area of ​​100 square meters, including floors and stratified bedrooms. The total increase will be less than 220 Square meters.

　　 The expansion of the old building will be unavailable for a few days when it is opened. At that time, the personnel will live on the spacecraft. There is already a certain scale of crops in the old building, and we must try to keep it.

　　 The glass greenhouse mentioned earlier is also part of the construction project in this phase. In addition, there is an important ancillary facility, a formal spacecraft landing on the apron, but the project will not be opened until a period of time after the factory starts metallurgy.

　　To complete all the work, whether it can be done in one year depends on the support from the ground.

　　 The third job is transportation and construction machinery.

　　 Now that the base brother wants to work, he runs around on his feet or the crawler of the robot. The demand for transportation is imminent, and the subsequent engineering also needs greater mechanical equipment support.

　　 The temperature of the lunar surface can be as low as minus 160 degrees Celsius. Rubber must not be exposed to the outside of the equipment. The lunar soil is also very destructive under the influence of low gravity. It is a carrier system completely different from the ground.

　　 Early lunar rover, red star vehicle and other vehicle experience can be used for reference, but it still cannot meet the requirements of manned and construction.

　　 In order to rush for time, after the ground completed the early demonstration and ground reduction model experiments, it was decided to complete the follow-up work in a coordinated manner between the world and the ground.

　　 There are three models in the first batch, one rover and two engineering vehicles.

　　 The manned rover related parts have all arrived, and the engineer-type astronauts manually assemble it on the moon watch.

　　 The rover has two occupants, ten rounds, with airtight cabins and no toilets. When going out for a long time, it is necessary to use traditional aerospace diapers and bags to solve the three emergencies.

　　 is equipped with a radiant thermoelectric battery and a solar panel with a power generation capacity of 200 watts to ensure that day and night changes will not unduly affect the cruising range, and it can last 400 kilometers with full power.

With the support of hexadecyploid sodium battery, 400 kilometers seems to be very few, but this is a monthly table, but there is no highway, and in order to ensure the tool and equipment space and the safety of the whole vehicle, it is not suitable to put too much. Battery.

The 　　 rover will be mainly used for surface drilling and sampling in the surrounding area, and subsequent supporting equipment can ensure that it can take samples of rock formations at a depth of 100 meters.

　　 There is a car. As for whether it is good or not, how to change it in the future requires the concerted efforts of the world and the earth.

The last task is to use electricity~www.wuxiamtl.com~In a vacuum environment, electricity is the basis of survival. Without electricity, even oxygen is a problem, but as a project, this is the simplest. After all, the moon table is short-term. It is impossible to produce power generation equipment by itself, and rely solely on transportation.

　　 There are only two sources of electricity for the moon watch, solar energy and nuclear energy.

　　 The micro-nuclear power unit specially developed for space and moon watches is still under test. The layout of solar energy is not technically difficult at all, just follow the delivery schedule.

　　 But in the polar regions, if you want to rely on solar energy to maintain the entire factory area and other needs, the area that needs to be deployed is very large, and the day and night time span is larger than other areas, and the weight of energy storage equipment will occupy a lot of transportation resources.

　　 Therefore, whether it is for the follow-up material recycling system or for more people to settle in the future, nuclear power is still needed in the end.

　　 The "Dragon Ball" nuclear power unit that is being debugged on the surface is developed based on a new type of nuclear power technology. Instead of boiling water, it burns steam.

During the whole process of 　　 Dragon Ball operation, the steam will not condense into water, and the temperature during the whole process is between 400 and 700 degrees.

　　The experimental unit does not include high-pressure steam and fuel. The total weight is 50 tons and the power is 5 megawatts.

The power is very small. With the existing nuclear energy technology reserves of country c, it is not impossible to make 40 megawatts with 50 tons. The main concern is that this thing can only be transported as a whole, and the vibration of the body during transportation may cause Risk of reduced reliability.

　　The Dragon Ball nuclear power unit will also be equipped with the two space stations in the future and Kunpeng at the same time, but the disposal of nuclear waste is a bit troublesome.