Military Technology

~www.readwn.com~ So many people feel that it is a pity why the first and second stages of this rocket cannot be recycled and then fully used. In this way, the cost can be greatly saved.

So there are rocket recyclable and reuse technologies, such as the famous Falcon rocket, and the Jianmu series rockets of our country Haoyu Technology.

As for the Jianmu-2 series of rockets, as Haoyu Aerospace's first recyclable and reusable technology rocket, it can realize the recovery of the first-stage rocket and the recovery of the fairing.

Can the second stage rocket be recycled? the host asked.

Hearing the host's words, Professor Zhou explained with a smile: "It's like this, both the first-stage rocket and the fairing work in the atmosphere, so the entire recovery work is carried out in the atmosphere.

As for the second-stage rocket, it needs to break through the atmosphere and enter space. In this way, the difficulty of recycling will increase, and the cost will naturally rise in a straight line. Unless the cost can be reduced, it will not be worthwhile to recycle the secondary rocket to make full use of it. It is better to build a new one.

The overall recovery just introduced is a technology successfully tested by Haoyu Aerospace last year, that is, they have mastered the secondary rocket recovery technology, and successfully carried out the secondary rocket recovery experiment last year.

In this way, the transportation cost of the rocket can be greatly reduced, and it is no problem to achieve the level of one thousand yuan per kilogram. If we ordinary people want to go into space in the future, this technology will be the key. "

Because it's cheap enough? the host asked.

Professor Zhou nodded and said, "Yes, because it is cheap enough, so that ordinary people can afford the tickets to go to space."

You go on. said the host.

Professor Zhou nodded and continued: "In addition to the mature and low-cost launch vehicle, Haoyu Aerospace also has a very mature ground measurement and control network, including the aerospace measurement and control center in the northwest, the landing field, etc., which can not only Providing convenience for them can also greatly save task costs.

The last is the satellite. Haoyu Aerospace has been deeply involved in the field of aerospace technology for many years, and has mastered a series of core technologies from satellites to spacecraft, to extraterrestrial probes, manned spacecraft, etc., and its technical strength is very strong.

As for this satellite, the reason why it was able to capture this decommissioned weather satellite so quickly is due to their excellent satellite sub-control system.

And through this method of dragging and separating the net, it is possible to realize the ability of one satellite to capture multiple obsolete satellites and orbital debris, which greatly reduces the cost invisibly.

In this way, the overall cost of cleaning up the entire orbital garbage can be controlled within a very low range, which is conducive to the continuation of this technology. "

Mr. Chen, you said that this technology is difficult, so where is it difficult and why is it so difficult? The host turned to Mr. Chen and asked.

Master Chen nodded and replied: "That's it. First of all, the earth's low-earth orbit is very huge. It rises a hundred kilometers from the ground to the famous Karman line, which is known as the boundary line between the atmosphere and space. From the Karman line, that is, Within the range of 100 kilometers to 2,000 kilometers from the ground, it can be called low-Earth orbit.

At present, 99% of the earth's satellites and spacecraft are active at this altitude, and this range is also the area with the most floating space junk, basically covering 99% of the garbage debris.

At present, in the regional low-Earth orbit space, there are about 500,000 pieces of garbage larger than one centimeter, or even more. Except for some natural celestial bodies, most of these fragments are all kinds of fragments left over from human activities.

Among them, there are also tens of thousands of large debris, many of which are various satellites and spacecraft that have been launched and decommissioned by various countries in the past.

Let's take the weather satellite to be captured in this experiment as an example. It is not big, and it is only about ten meters including the solar wing sail.

And to find this satellite in this busy and huge low-Earth orbit space and perform precise positioning, it is a test of the ground's telemetry and observation capabilities. It is necessary to telemetry and observe the satellite from the ground first, and then calculate it. The flight trajectory, speed, and then the satellite can be launched.

When the capture satellite, that is, the experimental Huanwei-1 is launched above the predetermined orbit, then it needs to automatically change orbit to find the weather satellite.

There is a certain error in the telemetry observation on the ground. The increase error is probably a few kilometers if it is better, and it is more than ten kilometers or tens of kilometers if it is worse.

Let’s not talk about how to find this satellite in the busy orbital space, let’s just say that it is very difficult to find something ten meters in size within the range of a few kilometers or more than ten kilometers.

Therefore, it is necessary to use the detection equipment on the Huanwei-1 to scan and detect, find the satellite, and then lean on it.

It is said to be going up, but it is actually slowly approaching the past. This is comparable to the docking technology between our spacecraft and the space station, and it is even more difficult than that.

Because we know the precise location information of the space station, we can achieve precise docking only after we understand this information. But Huanwei-1 is not, it does not know the precise data of this satellite, only approximate data information.

Therefore, it needs to adjust its attitude, speed, and approach angle in real time based on the data information of this decommissioned weather satellite, so that it can safely approach this satellite.

We can see from some images released this time that this decommissioned weather satellite is not stable~www.readwn.com~ It is out of control and is turning over and running at a high speed.

The risk of approaching such an object in space is very high, and if you are not careful, you may collide with a decommissioned weather satellite. At that time, instead of cleaning up garbage, it was creating garbage. "

Professor Zhou followed Mr. Chen's words and continued: "We can see that Huanwei-1 is very flexible. Through its own attitude engine, it constantly controls the speed, adjusts the angle, and then slowly approaches this ship. Decommissioned weather satellite. Then keep a distance of about 30 meters from this weather satellite.

Then, launch a catch net to capture and wrap the entire satellite, and then de-orbit it. The general space junk cleaning technology can only complete this step.

But Haoyu Aerospace is not. The Huanwei-1 will push and drag the decommissioned weather satellite out of its original orbit to clear the orbit. Then drag the decommissioned weather satellite to change its orbit, speed, and enter the preset return to the atmosphere orbit.

After entering this orbit, Huanwei-1 immediately left the shorts and cables, and then voluntarily left the return orbit, while the decommissioned weather satellite will fall into the atmosphere along the return orbit and burn up. It is very difficult to realize this point, and there are very high requirements for the flight control of satellites. "