Of course, compared to this time's Jianmu-2 retractable rocket, what everyone is paying attention to is the experimental spacecraft launched this time.
This experimental spacecraft, codenamed Oasis, is a space farm experimental cabin. Moreover, it is an inflatable inflatable space capsule.
So what is an inflatable inflatable space capsule? The explanation is a little complicated. Simply put, it is like a balloon. When it is launched, it is in a folded state. After it is launched into space, it is inflated.
It can expand and grow like a balloon, thus forming a spacecraft with a large internal space.
This kind of inflatable inflatable space capsule is currently being studied by countries all over the world, and some results have been achieved. The inflatable inflatable space capsule that Haoyu Technology will launch this time is a new generation of new improvements based on this.
Technical products.
It sounds like this inflatable inflatable space capsule is very simple. You only need to get a better material, make it into a balloon, and then send it to space to blow it up.
But in fact it is not that simple. First of all, all space capsules must consider one issue, and that is safety.
The environment in space is relatively complex. As for the International Space Station, it will experience sixteen sunrises and sunsets every day (twenty-four hours). In other words, during these sixteen alternating days and nights, it will withstand positive and negative impacts.
A temperature difference of more than 300 degrees. During the day, under the sun's rays, it has to withstand high temperatures of more than 100 degrees and many harmful solar rays. Without sunlight, it will withstand extremely low temperatures of more than 200 degrees below zero.
This repeated alternation of high and low temperatures will be a severe test for any material. First of all, we must ensure that the material can withstand this repeated alternation of high and low temperatures. Secondly, it is the service life
, this repeated alternation of high and low temperatures will increase the fatigue of any material, thereby accelerating the aging of the material and greatly reducing its service life.
In addition, this material must be able to resist various harmful cosmic rays. Our earth is protected by the magnetic field and atmosphere, so it avoids the invasion of various cosmic rays, so that we humans and life on the earth can survive.
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In the universe, without the barrier of the atmosphere, the earth's magnetic field is weakened or even has no magnetic field, so it is necessary to rely on aircraft alone to block these harmful rays.
Of course, there is another major danger in the universe, that is, unknown space junk fragments. These fragments are very small, maybe a few centimeters or millimeters, and it is impossible to monitor and predict them.
What's more, there are also some space meteorite fragments, which are more difficult to monitor and predict. You must know that our earth is attacked by space meteorites every day. Most of these meteorites will turn into bright meteors and burn up in the atmosphere, and only a small number will burn up.
It will be enclosed on the ground, which also protects us humans from being attacked by space meteorites.
In space, these space debris and meteorites traveling at a speed of six or seven kilometers per second have become fatal killers of spacecraft and satellites. Although the chance of this is very small, it is not impossible. According to the relevant log technology of the International Space Station, it
During the years of service, it has been hit by small space debris and small meteorites many times. But fortunately, no major damage was caused.
Therefore, this kind of inflatable space capsule naturally gives people an illusion. They think that it is as fragile as a balloon. If it is touched a little, it is likely to explode. Even if it does not explode, it will still look like a balloon or a ball.
Deflated like that.
Moreover, the materials used in the spacecraft and space station are metal and composite materials, which give people the first impression that they are relatively strong. But Wu Hao’s inflatable space capsule gives people the first impression that it is fragile and somewhat
Not very reliable.
But in fact, this inflatable inflatable space capsule is also made of polymer composite materials. This material is also mostly used in spacecraft, space stations and spaceships, and Wu Hao and the others are on this inflatable inflatable space capsule.
The experimental space capsule uses a self-developed polymer composite material. After repeated testing in simulated environments, this material has achieved very satisfactory results.
For example, in general, this kind of material is prone to aging, hardening, and loss of toughness during long-term alternations of hot and cold temperatures. However, this material does not. It can maintain thermal properties and resist aging for a long time in such an alternating hot and cold environment.
The performance is very excellent.
In addition, this new type of polymer composite material they developed by themselves is also very strong. Because of its high strength, it has strong tensile resistance and impact resistance.
However, no matter how strong it is, it will be difficult to withstand the impact of those space debris at six, seven or even ten kilometers per second. Not to mention this kind of polymer composite material, even the hardest metals chromium and titanium in the world cannot
Can bear it.
Therefore, human spacecraft do not expect to rely on materials to prevent the collision of these debris. Instead, they have established an accurate debris detection and forecasting mechanism to monitor the status of debris in space in real time, thereby adjusting the trajectory of the spacecraft to avoid debris.
Secondly, it is necessary to have good self-healing and repair capabilities. In other words, after being hit by these debris, the spacecraft can repair itself in time, or repair quickly. This can avoid the situation deteriorating and threatening the safety of the spacecraft.
and even the safety of the astronauts inside the spacecraft.
In the scientists' imagination, future spacecraft will have a certain degree of self-healing ability, that is, self-repair ability. A special liquid is put into the interlayer of the spacecraft shell. If the shell ruptures, these special liquids will
It quickly gathers into the damaged parts and solidifies, thus blocking the leaked parts damaged by the impact.
The technology research and development team of this expandable inflatable space capsule project used this technology on this expandable inflatable space capsule.
A special liquid is injected into the polymer composite sandwich of the expandable inflatable space capsule. When the expandable inflatable space capsule leaks, this special liquid will block the leakage site in the shortest possible time.
Prevent the internal pressure of the spacecraft and the outflow of cabin air.
In addition, this time the inflatable outer shell of the inflatable inflatable space capsule is made of overlapping materials, which further improves the strength of the inflatable inflatable space capsule. Its comprehensive performance has even exceeded that of traditional spacecraft.
metal material casing.
Furthermore, the outer shell of the inflatable space capsule is composed of many horizontally and vertically connected inflatable grids pressed by polymer composite materials. This air grid can be folded together to save space when not inflated, and will collapse after inflating.