The three kilometers around the launch center are under martial law, and a large number of mechanical guards are constantly patrolling the area, and if they find someone approaching, they will be expelled.

After all, this is the first time a rocket has been launched, so Ye Fan invited many respected experts in the industry to be stationed and guide to ensure that nothing goes wrong.

On the far side of the launch center, a "steel giant" with a height of 150 meters and a weight of 2,500 tons has been built.

It is a large rocket launch tower that shimmers in the dark night.

The largest cantilever of the launch tower, that is, the structure that covers both sides of the rocket before launch, is 28 meters long, which can be described as "strong and strong".

If you look down from the top of the tower, you can see that the tower has a "K" shape with the tower and the cantilever, and many of the facilities on the tower can be rotated.

This is the design of Su Ying's team after careful consideration, and it is not designed casually, it is closely related to the launch of the rocket.

After the rocket takes off, there may be a horizontal drift, and in the professional field, this possible drift is called the rocket safety drift.

In order to ensure the safe launch of the rocket, it is necessary for the launch tower to be at a distance from the rocket, so as to get rid of the safe drift of the rocket.

Since the rocket also requires a series of preparations and operations from the launch tower before launch, and the tower is not close to the rocket.

As a result, the working platform and service boom on the tower are designed to be rotary, while the crane is designed to be boom.

In this way, the cantilever and crane of the working platform can be rotated significantly before launch, so that various facilities can ensure that the rocket can be approached without leaving a part of the distance.

Therefore, when launching, there is enough space to ensure the safe launch of the rocket, and before launching, the working platform is closed to wrap the rocket.

At this time, Datang Technology's rocket launch tower was closed, because the final preparations for the launch of the rocket were underway.

However, ninety percent of such a large project is built and inspected by intelligent robots, and the proportion of human resources occupied is already very small.

Otherwise, the launch center would not have been built in such a short time and could have been quickly put into rocket launch.

At this time, the cantilever of the launch tower, that is, the four-stage swing platform of the launch tower, can form a closed space to protect the rocket from wind and rain.

There is also a lifting platform in the rotating platform, which is used by testers to open and close the hatch, unload the instrument, connect the plugs of various equipment, and test and astronauts to enter the cabin.

The upper slewing platform was provided with an aiming window to ensure the aiming of the rocket.

On the 100-meter-high launch tower, there is also this large crane, at this time the crane has been connected to the network, and the artificial intelligence is controlling the crane to prepare for the final launch program.

In addition to the normal transportation function, when the spacecraft fails, the escape tower and the carrier module can also be unloaded, and after the spacecraft is troubleshooting, the escape tower and the carrier module can be lifted, and the rocket is reassembled.

Inside the launch tower, various indicators flashed like stars, and through the live broadcast of the live broadcast robot authorized by Datang Technology, everyone saw the large rocket inside the launch tower, as well as the spacious inside of the launch tower.

On the eve of the rocket launch, the live broadcast robot showed a variety of power cables, gas pipes, propellant filling tubes, water pipes, ladders and other equipment to the national audience.

Thirty minutes later, the launch program was ready, and all the intelligent robots, as well as the staff who were inspecting, carried out the evacuation.

The audience watching the live broadcast in the live broadcast room became more and more nervous. Goshoya

You must know that this time the rocket launch did not choose the common Jiuquan satellite launch base, but chose the target location in Jiangcheng.

Jiangcheng is not different from the Jiuquan Satellite Launch Base, and it does not have an advantage in terms of dimensions or other aspects.

Although it was launched on the outskirts, it was only 50 kilometers away from the city, which is just a distance that can be leaped over at once for a rocket that flies into the sky.

Therefore, it was not allowed to carry out rocket launches in such a place at the top level, after all, if something went wrong, it was likely to cause serious repercussions.

However, when Ye Fan took out the electromagnetic defense array, everyone was silent.

After all, this thing is a powerful defensive shield that can block the impact of meteorites, and on the day of the natural disaster, everyone can see it, if it weren't for the electromagnetic defense array, it is estimated that the big cities along the coast of China would be finished.

So with such assurances, the top brass reluctantly agreed to the launch of the rocket.

In the eyes of the outside world, Datang Technology is making a brave attempt, after all, it is the first company in the world to dare to launch rockets in urban areas.

And even if it is said to be a state-owned enterprise, this Datang Technology is still a private enterprise, if it succeeds, it is fine, if it fails, then Datang Technology will be in great trouble.

Twenty minutes before launch.

"Drop... Drip... Drop..."

The rocket tower opened slowly, and the process of opening this one was very slow, and it took nearly ten minutes to open.

It wasn't until the launch tower was opened that all the spectators saw the rocket for what it really was.

The name of the rocket is "Qinglong", and on the rocket body, four big characters are written in eye-catching red font: "Datang Aerospace".

At the same time, the shape of this rocket is much larger than other rockets, and judging from the data on paper, it is normal for the Blue Dragon to be so big.

On paper, this is simply the largest launch vehicle in the history of mankind, with a height of 130 meters, a take-off weight of 4,200 tons, and a total thrust of 3,940 tons.

The lunar orbit has a carrying capacity of 60 tons, and the low-earth orbit carrying capacity is 150 tons.

This is a three-stage rocket, consisting of the first, second, third, instrument compartment and payload.

The first stage is 50 meters long and 15 meters in diameter, and the diameter increases to 18 meters at the end of the tail, and is equipped with 4 stabilizing wings on the tail section with a wingspan of about 25 meters.

The first stage uses five engines, the propellant is liquid oxygen and kerosene, and is stored in two 10-meter-diameter aluminum propellant storage tanks.

The second stage, which is 25 meters long and 10 meters in diameter, uses liquid oxygen and liquid hydrogen propellant, and shares five second-stage engines.

The third stage is 18 meters long and 6.6 meters in diameter, with a three-stage engine and liquid oxygen and liquid hydrogen propellant.

It's like a Big Mac.

It is like a guard, standing quietly in the night.