This is, of course, a defense project. Pen ~ fun ~ pavilion www.biquge.info,

Guan Fei is still relatively cautious, he does not think about winning or losing, thinks about problems more far-reaching, and always plans for the worst outcome.

He didn't build this mountainside project to defend against the bombardment of the Vicious Army, and the other party was not qualified to let him be scared to this extent.

He's guarding against the country across the ocean!

Although the country and the other party have temporarily come together for the same enemy, in addition to the country, they are still relatively naïve to think that the two sides are friends, and the other party has never relaxed its vigilance. Although restrictions on the country have been relaxed, and some weapons and technologies that were previously unwilling to be sold have been generously donated, most of them are tactical in nature and are clearly targeted, which is to defend against threats from the north.

Matsuguchi expressed his willingness to sell F16 and Black Hawk, all of which are true.

Those latest and strategic weapons technology, such as long-range bomber technology, advanced guided weapons, and submarine technology, can not be sold to China at all, except for saying that there is no problem with it. Not to mention that there is no money in the country, even if there is money, they will also use all kinds of excuses to refuse.

Although the base area has begun to take shape, it is still in a corner after all, and the territory is not large, with a total of only about 7,000 square kilometers, which can only be said to be a slight climate.

Therefore, although the other party may know about the existence of the base area, it has not attracted great attention because it is beyond the reach of the whip and is determined to be a Commonwealth country after all, and belongs to the territory of the British.

However, with the beginning of the campaign to liberate the whole country, if the campaign in the base areas does not go well, it is fine, and if it goes smoothly and rapidly advances to the south, it is difficult to say that the country will sit idly by. With their-stirring stick characteristics inherited from the British, most of them will start selling guns and artillery to the Weiding army, engaging in so-called proxy wars.

If the base area really approaches the edge of the Indian Ocean, it is unknown if the other side is in a hurry to instigate India to take action, or even to personally go out and send air force support.

It's unlikely, but who can guarantee that it won't happen?

Expect the enemy to be lenient, and it is better to be prepared than to use it, rather than be helpless when things come to an end.

Therefore, in the past few years, Guan Fei will not only vigorously develop basic and military industries, train troops, improve equipment, accumulate strength, and make all preparations for an all-out campaign, but will also build a vast mountainside project in the central mountainous area. In an emergency, it is even necessary to make plans to relocate all factories and people to the mountains, fight a protracted war with the other side, and buy time for technological upgrading.

The mountainside tunnels in this valley are just the core part of this defense system, and in addition, there will be more and more mountainside tunnel projects that will start one after another, and their area will spread over thousands of square kilometers of the entire base area!

This is a battle that he must fight and win.

At all costs and no matter how great the sacrifices he made, he must resolutely carry out the war of liberation to the end, thoroughly create a stable and united external situation, and create conditions for farming in the future.

The tunnel system he built extends in all directions, and it is completely a dungeon hidden deep in the mountain!

The experts who came with the car were very impressed by this.

Upon entering the back of the second steel gate, everyone was a little shocked.

They were a little shocked by the tall passage they had just passed, but in front of them was a much wider hillside square with a three-story building high, a top span of hundreds of meters, and a horizontal length of several kilometers.

At the top of the square, there are lights every few meters, illuminating this huge space as bright as the outside.

Behind this large plaza-like space are deeper passages.

A large map at the entrance shows that these passages crisscross the mountain's belly, which covers several square kilometres, into checkerboard-like partitions. Then use these subdivisions to excavate residential quarters, work areas, research institutes, power supply rooms, headquarters headquarters, hiding holes, and weapons depots......

These communities are also divided into several floors, with one floor above and one below each floor, connected by stairs and escalators to form a whole.

In other words, he intends to create a miniature version of the new city in the belly of the mountain!

What a big appetite!

This time, even the well-informed old experts were dumbfounded, unable to believe what they were seeing.

In such a huge passage, everyone didn't even need to get off the car, and drove directly to the research area.

Because it is a mountainside project, there is naturally no need for a fence, and the wide passage outside also has the role of a parking lot, and the jeep and bus are parked in the parking area marked by the white line outside the door of the Military Research Institute.

Probably to take care of the mood of the researchers, the top of the military research institute is twenty meters high, nearly seven stories high.

Standing here, there is absolutely no feeling of cramped and oppressive, almost no different from being outside.

Even if you stand below, you can look up at a huge round lamp, projecting light downwards like the sun, illuminating the space in a bright light.

And around this giant lamp, it is also sprayed with blue and white tones, forming a sky hue like blue sky and white clouds, making it even more difficult to tell whether this is outdoors or inside the mountainside.

A few bright rays of light cast from below even formed a scene of white clouds floating and moving.

What opened their eyes the most was that in this man-made space, there were trees, flowers, lawns, nurseries, pavilions, and waterholes. As far as the eye can see, an automatic sprinkler is spraying water on the surrounding lawn.

Between the flower and plant nurseries, three-storey buildings are built in a patchwork manner, and some buildings have sky gardens added above them.

If you look closely, these buildings are all peeled off from the mountain wall little by little, from the roof to the foot of the house, from the outside to the inside, it is completely a whole!

Another incredible thing is that this space is not stuffy.

A wind drifted softly, like a breeze in nature, blowing on everyone's faces, without the slightest touch of the strong wind of the passage ventilation fan.

"Where did this wind come from?" One expert couldn't help but ask.

"This is a powerful fan blowing out of a special ventilation channel, at the exit, using a technology similar to turbocharging, absorbing air from the suction hole, pressurizing and expelling it from a circular air outlet, and the air is scattered in a circular trajectory in the space to simulate the effect of natural wind. In the future, we will launch a bladeless fan developed with this technology, and you can see that it is actually very simple. This time it was Guan Fei who served as the commentator, and he explained in a very relaxed tone.

The experts looked at each other.

"This project should be huge, I look at the future blueprint marked on the entrance map board, I'm afraid it won't be completed in three or five years......" One expert coughed and said euphemistically.

"It's not too big." Guan Fei seemed to be unaware, and still said in a brisk tone, "We have developed a stone loose liquid. When carrying out internal works, it is only necessary to drill some holes in advance, and the distance between each hole is no more than one foot, and then the chemical agent is poured into it and sealed. After 12 hours, the 20 centimeters of rock around the hole will become very loose and brittle, only slightly harder than plaster, and can then be easily dug out by hand with a shovel or forklift. This tunnel project may seem huge and requires a lot of manpower, but apart from a little bit of effort at the beginning, it will take a month or two to expand and expand it to this extent. The entire mountain project will be completed, and it will not take more than five years. ”

The crowd was speechless again.

Guan Fei obviously mastered a lot of advanced technology that others didn't know, but he used it to build this mountainside city, and built it even more beautiful than the new city, suitable for human habitation.

So, is this the wrong skill tree?

"Alright, it's here!"

Guan Fei led them all the way to this garden-like mountainside research institute, and came to a stop in front of a large rectangular two-story building.

On the heavy granite walls, everyone saw a bronze plaque: the Anti-Invasion Physics Laboratory.

The two-storey building is a complete granite structure, and although no steel is used, and the side walls have the same floor-to-ceiling glass façade as the outside, the structural strength of the interior rooms is even stronger than that of the reinforced concrete building on the outside, thanks to the fact that the interior rooms are all made of granite.

The building is not very wide, only about ten meters, but the length is seventy or eighty meters, like a rectangle placed horizontally.

Once inside, everyone understood why it was so long. It turned out that two air cannons were placed here.

The so-called air cannon is actually an enlarged version of the air gun.

It has a two-stage pressurized chamber with a high-strength steel pipe more than 20 meters long and about 50 centimeters thick connected to the front. The steel pipe is at the front end, connected to a thin tube that leads to a reinforced heavy steel room.

Everyone is an expert in this area and knows how to use it inside and out.

When the air cannon is in use, the air is first pumped into the pressurized chamber at all levels to a vacuum state. It is then pressurized to a certain extent and then hydrogen is injected into the primary pressurized chamber (long steel tube). Under the action of the injected hydrogen, the hydrogen squeezes through the diaphragm separating the primary and secondary pressurized chambers and enters the secondary pressurized chamber (thin steel tube).

The huge impact force will push the tungsten alloy warhead placed in the pipeline, shoot out at high speed, and hit the target placed at the front end through the velocity measuring device, so as to calculate its penetration force on the target according to its impact force, speed, and changes after the target is hit, as the armor protection effect of the target.

"You're so ......, so rich!" In the crowd, I don't know who it is, I said quietly.

Guan Fei smiled and did not answer.

He also had a general understanding of how domestic experiments were done in this area. It was because he knew that he had built this laboratory to conduct penetration experiments.

In the same way, this experiment was adopted in China to save more money. They usually use a 14.5 caliber smoothbore gun, loaded with a tungsten alloy bullet with an aluminum stock, through two layers of thin copper wire woven velocimetric target, bombard the test object or armor, and then calculate according to the measured data to obtain the final result.

It's not impossible to do this, but the relative error is relatively large because of the poor equipment, so it's no problem to simply estimate the approximate value, but it is still not enough to calculate accurately. In particular, the copper wire sensor has a low sensitivity, and it can roughly test the passing speed of warheads below 1,000 kilometers per second, but it is almost powerless for high-speed targets with a speed of more than 1,000 kilometers per second.

Moreover, the fragments caused by the splitting of the warhead will hit the target one after another, and it is difficult to determine who hit it first, so the error will inevitably be very large.

The air cannon produced by Guan Fei is a professional test equipment, and the results are more accurate and reliable.

Of course, the investment in equipment is also greater.

But what is this, compared with getting accurate results and better helping the later research and development, this little investment is nothing.

He would rather spend more money and get the most accurate information than spend less and get an ambiguous and vague result.

Once a mistake is made, the initial investment will be invalidated, and you have to start all over again, which is more than worth the loss.

Money is earned and spent.

Or what would he do if he was desperately trying to make so much money!