The rise of nanometers

Inside the Eagle Space Base.

Huang Xiuyuan was relatively satisfied with the situation of this test flight.

Although a launch vehicle needs to reach the first cosmic speed to enter outer space, ordinary launch vehicles launched at high altitude are no better than ground launches.

But one characteristic of N20 fuel is its high explosive power, which can accelerate the launch vehicle to the first cosmic speed in about 70 seconds.

Therefore, after high-altitude launch, the thin air, low pressure, and relatively low gravity at high altitude can further allow the launch vehicle to leave the atmosphere at high speed.

In addition, in these launch missions, the Golden Wing Dapeng used a vertical posture to launch the launch vehicle. This was actually for safety reasons and to ensure the safe separation of the launch vehicle and the aircraft body.

Because the Golden Wing Dapeng, like the An-225, is a backpack type, not the belly clip type like the Pegasus.

This mode of transportation results in an obvious power superposition phenomenon within the few seconds when the launch vehicle is ignited, so a vertical body is used to facilitate the separation of the launch vehicle from the back.

Although doing so will cause the launch vehicle to lose part of its flight acceleration, for vehicles such as the Chang 11 with high-energy fuel, this flight acceleration force will not have much impact.

"Xiuyuan, the technical verification work of the Golden Wing Dapeng is almost complete now. When do you plan to put it into use?"

Huang Xiuyuan pondered for a moment: "... June! The two spaceships have just been completed."

"Oh? Are the lunar spacecraft and lunar landing craft completed?" Academician Wang obviously knew something.

Huang Xiuyuan nodded: "The Aerospace Science and Industry Corporation has completed the lunar spacecraft, and the lunar landing ship will also be completed by the end of next month."

The lunar spacecraft and lunar landing craft are one of the projects cooperated by Eagle Aerospace and Aerospace Science and Industry. The lunar spacecraft weighs 65 tons (including the lunar space station and three satellites), while the lunar landing craft weighs 52 tons.

Originally, these two spacecraft were to wait for the 120-ton Chang 13 to enter service and be launched into space in 2015.

However, technology is developing rapidly, and the successful verification of the Golden Wing Dapeng transport platform has resulted in a maximum payload of about 260 tons.

In other words, using the Golden Wing Dapeng, it is completely possible to launch the lunar spacecraft and lunar landing ship into the lunar orbit at one time.

Academician Wang reminded: "However, if the Golden Wing Dapeng is used to carry it, there cannot be astronauts in the spacecraft."

"Yes, my plan is this. The spacecraft will be launched from the Eagle Space Base, and the astronauts will go first and be transported to the Tiangong Space Station by the Chang 11 of Dongfeng Space City. Then, after the moon ship comes up, the two parties will meet at the Tiangong Space Station. The astronauts enter the Chandrayaan and head to the moon.”

The reason why we set off from the ground instead of taking the moonship is mainly because the moment the launch vehicle breaks away from high altitude, in about 70 seconds, it has to soar from zero to the first cosmic speed. This instantaneous acceleration creates a violent overload. , enough to kill astronauts.

The ground-launched Chang 11 uses N20 high-energy fuel, which is a passivated model formulated after rigorous calculations and will not explode with too powerful thrust in an instant.

Eagle Aerospace, which pursues increased payload, had no intention of sending astronauts into space in this way.

At least in the short term, the launch vehicle carried by the Golden Wing Dapeng will have to take the ordinary Chang 11 to space due to the strong instantaneous acceleration. Unless there is anti-load technology such as deep-sea liquid, it can only take the ordinary Chang 11.

The two discussed it for more than half an hour.

The simulated launch vehicle made a circle in low-Earth orbit, re-entered the atmosphere from outer space, and then landed safely at the landing site.

Academician Wang said another thing: "The prototype satellite over Fanghe has been completed and will be launched next week."

Huang Xiuyuan actually cares more about this project.

He sighed: "The satellite communication system is finally entering the testing stage."

Huang Xiuyuan plans to use this ultra-low-orbit satellite for satellite communications, with the purpose of squeezing Musk's Starlink project.

Although Starlink satellites have launched 24 experimental satellites this year, their orbits are in low-Earth orbits of 340 to 1,100 kilometers.

Eagle Space's ultra-low orbit satellites operate at an altitude of 210 to 240 kilometers.

The two sides are not on the same orbital level.

Even because of the ultra-low orbit, Eagle's satellites have basically no competitors. The orbital layer of 200 to 300 kilometers will be completely occupied by Eagle Aerospace.

In order to ensure the quality of satellite communications, Huang Xiuyuan plans to launch 360 ultra-low orbit communication satellites in the first phase.

The plan is divided into three phases, with a total of 1,080 communication satellites launched, respectively arranged at 210-240, 270-300, and 320-350 kilometers, forming a three-layer staggered satellite communication system.

As for why it is not possible to launch tens of thousands of satellites like the Starlink project.

The main reason is that the technology of Eagle Aerospace is different from that of its counterpart. With the technical support of the Suiren system, eight high-efficiency laser communicators will be deployed on a single communication satellite.

The bandwidth of a single laser communicator can reach 28-35G per second, and the total bandwidth of a single satellite is 224-280G per second.

You must know that the bandwidth of a single Starlink satellite is only 15-20G. In addition, due to the high operating altitude and weather interference, tens of thousands of satellites are needed to ensure smooth communication services.

As for Eagle's communication satellite, due to its ultra-low orbit operation, low communication delay and signal loss rate, it has relatively advantages.

A more important advantage is that in terms of service life, the service life of Starlink satellites is very low, and it may take several years to scrap a batch of them, constantly going back and forth.

Eagle Aerospace, which has many new technologies, has designed communication satellites with a service life of more than 15 years, and there is room for upgrading and transformation.

1,080 communication satellites can provide a total bandwidth of 241,920G to 302,400G.

Under the premise of limiting the number of users and limiting the upload and download speed, assuming that one user occupies 5-10M per second, the communication system can serve 25-60 million users.

In fact, due to the extremely large local storage that Suiren has vigorously promoted, the traffic required by many software does not require much.

The communication quality of 5 to 10M per second can produce the effect of 20 to 50M, which will help Long Totem mobile phone seize the market in backward areas and no-man's land.

At least in areas such as navigation, deserts, tropical rainforests, and the Arctic and Antarctic, this communication system will play an important role.

Huang Xiuyuan has asked Lin Baijie to cooperate with the three major communication operators to establish a joint communications company.

Regarding this matter, the three major operators are also happy to see the results. After all, this can reduce the investment in base station equipment in remote areas.

The cooperation agreement between the two parties allows the Suiren Department to establish its own communication operation company, and then everyone will share the bandwidth of the satellite communication system.

In cities and areas with dense base stations, base station communication systems are used; in uninhabited areas and areas where base stations are not built, satellite communication systems are used.

The two parties combine with each other to complete the entire communication system and achieve global communication services without blind spots.

In line with the domestic world hegemony, we will fully suppress Musk’s Starlink plan so that the other party cannot generate profits.

As for the issue of the debris of the Starlink satellites and the possible blockage of low-Earth orbit in the future, Noah will certainly not be allowed to do whatever he wants in this matter.

In addition, there are plans to deploy two sets of laser defense systems in China this year. One is a ground-based laser defense system, which includes 50 large lasers with a range of up to 2,000 kilometers and is specially used to deal with low-Earth orbit satellites.

Coupled with another laser satellite defense system, it is enough to block the entire Blue Star's low-Earth orbit and middle orbit, as well as the atmosphere and surface.

If Noah had his own way, they wouldn't even have a satellite in space.

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