Li Hao stood in the courtyard of the smart factory, watching them make a large transparent balloon made of plastic.

Today is June 22nd and the weather is very clear. He didn't expect that in just three days, Guo Jianguo and Yuan Dingfang led scientific researchers and engineers to work together.

A prototype of what he described as a brief near-space laser communicator has been completed. Now it's officially ready to start the first experiment.

Zhou Yunsheng, who came with Li Hao, looked at the big balloon and asked puzzledly: "Why do you want to send communication instruments to the adjacent space 80 kilometers above the sky?" I think a big balloon is fine at a height of more than 10 kilometers away. ”

"We designed this height, of course, for his own reasons. This is the optimal height after many calculations.

The space of about 20,000 meters is the main flight altitude of civil aircraft. There are also aircraft flying frequently in the space below 20,000 meters. In particular, low-altitude drones are widespread.

The main purpose of the laser communicator is to communicate confidentially. Everything is designed to serve better communication.

If it is deployed at low altitude, it will block the transmitted signal by various interferences in the low altitude.

Arranged in the lower floors to enter the space, it will also be disturbed by factors such as atmospheric air currents.

This causes the machine to go down, and it is difficult to repair the machine at high altitudes. ”

"Our company's communications are really to this point of grimness. I think it's a big country, and the military doesn't engage in this kind of communication. Zhou Yunsheng looked at the big balloon and said suspiciously.

Gao Gao, who was standing on the side, heard Zhou Yunsheng's question, and he explained: "Mr. Zhou, our company's foundation is still insufficient, and it can't be compared with those big enterprises.

We transmit data over the public network. And those large state-owned enterprises, such as the Aerospace Science and Technology Group, the North Industries Group.

The communication between them is connected by a dedicated line. Information will never be easily stolen by outsiders.

Not to mention military communications, which are ensured by a variety of methods. Even quantum communication, which is now underway, has been put to trial. ”

"I'm just getting to know the basics." Zhou Yunsheng turned his head to Li Hao and asked, "Laser communication is greatly affected by the weather environment, how can we communicate if we encounter extreme weather." ”

Li Hao said confidently: "Our laser communicator, it plugs a special reaction film in front of the conventional laser emitter.

It can change the properties of the emitted laser, especially its extremely penetrating nature and low signal attenuation. Ordinary rainy weather will not affect its communication function.

It is the occurrence of extreme weather, such as typhoons. Normal communication can also be affected. But its impact is weak. Besides, we have a meteorological instrument, and if we really encounter special weather, the meteorological instrument will also play its due role. ”

As soon as they finished speaking, they looked like a large balloon that the engineers in front of them were installing. It is an approximate spherical shape with a diameter of about ten meters.

It is slightly larger at the top and tapering at the bottom. The volume is about 550 cubic meters.

The entire sphere is composed of 88 petals of metamaterial organic plastic, which is only 30 microns thick, but it can withstand 1,550 bar of pressure.

Metamaterials are different from ordinary materials and are a material discipline that has developed and grown in recent years.

It is the structure of a material that is known in nature. By scientists according to certain rules. Through hundreds of millions of attempts, it is recombined into different materials.

This material is completely absent in nature, but it has very special abilities.

For example, the organic plastic that is assembling this big balloon. It is very thin and light, with an overall weight of only 67 kg.

After Guo Jianhao finished assembling the big balloon, he immediately began to instruct scientific researchers to conduct pressurization tests.

As the pump continues to inflate the balloon. It started to bulge.

There are scientists on the side, constantly recording data.

"The air pressure strength is 50 Pa, and the material is normal."

"The air pressure strength is 250 Pa, and the material is normal."

The researchers continued to experiment and soon reached a critical value of 1550 Pa for material design.

"The air pressure strength is 1558 Pa, and the material is normal."

After Guo Jianhao heard it, he ordered: "Stop pressurizing now, and observe the operation of the equipment at all times." ”

Guo Jianhao walked up to Li Hao and said, "This kind of critical space vehicle seems to be basically successful now. It is now perfectly designed to meet the requirements.

After Manager Yuan Dingfang was ready to play with the hanging warehouse, we began to release the adjacent space vehicle. ”

After Guo Jianmiao finished speaking, he asked Zhou Yunsheng: "Mr. Zhou, do you say hello to the relevant departments?" There are extremely busy international civil aviation routes around Yanjing.

If we release a spacecraft close to it, it will not be good if it affects the flight of the aircraft. ”

"I have already said hello to the relevant departments, you near-space vehicles, as long as they take off at the specified time according to the predetermined requirements. Absolutely no problem. Zhou Yunsheng replied to his question.

Yuan Dingfang also walked over and said to them: "The equipment has been prepared, it has a total of eight groups of laser transmitters and eight groups of laser receivers. ”

Li Hao saw that they were all ready, and this time happened to be the window time given.

"Let's take off now and see if this near-space communication station we designed can function properly."

After Yuan Dingfang heard Li Hao's order, he began to ask the engineer to start the near-space vehicle.

I only saw that the machine inside the aircraft controlled its air pressure. It seemed slow, but it began to fly into the sky with great speed.

The balloon has rotating propellers underneath it, which are mainly responsible for maneuvering its direction. At the bottom is a hanging compartment, which is the laser communicator.

Looking at the nearby spacecraft, little by little, they became smaller and disappeared from their eyes. They all enter the control center inside the smart factory.

The control center installed here was mainly for the future research building. Communication within them is done using a fiber optic network.

The LAN built by themselves, with their company's security means, does not worry about communication leaks.

Li Hao could clearly see from the screen of the control center that the nearby space vehicle was flying slowly upward.

They waited for a long time, and the nearby spacecraft soon came to the sky 80 kilometers above and hovered there steadily.

The Engineer saw that the vehicle in the vicinity of the space was stable. He immediately transmits a set of data and relays it through the adjacent space communication station.

Soon this set of data was transmitted to the headquarters of Qingci Technology in the center of Yanjing.

After several back-and-forth communications, it was proved that the laser communicator sent a stable signal.

After Li Hao saw this situation, he breathed a sigh of relief and said: "We have succeeded, and in the future, our company's communication within Yanjing will be transmitted by the near space communication station to prevent others from stealing secrets."

After the implementation of our satellite plan, we will be able to set up our own satellite communication network. ”

When everyone heard the news of the success, they all applauded enthusiastically. Everyone present knew how beneficial it can be to keep communications confidential.