Chapter 1076 The recovery capsule was successfully developed

But no matter what, everyone's enthusiasm is still quite high, and Zhao Zhongyao is naturally unwilling to dampen everyone's enthusiasm. So, he just kept all these 'works' in his office.

Zhao Zhongyao was naturally dismissive of the image of the spaceship designed by these people. Of course, he himself knew what the ship should look like.

In fact, the spacecraft in the manned space program is just a recovery capsule, and since it is to be recovered, it should of course be designed as a circle. Because, only the round shape will be relatively stable when flying in the air.

However, when the recovery pod falls from a high altitude to the earth's surface, it will get faster and faster due to the acceleration of gravity. At this time, the outside of the recovery chamber has to withstand a high temperature of thousands of degrees. If the outer material of the recovery chamber is not strong enough, it will definitely not be successfully recycled. When the friction between the chamber and the atmosphere creates a high temperature, it is enough to melt the chamber.

Therefore, to develop a recovery chamber, the first thing is to find a metal material that is super resistant to high temperatures. Of course, in the process of recovery, the entire recovery module is constantly reducing its speed, which is also equipped with several deceleration parachutes on the recovery module, which are all design tasks that must be completed when designing the recovery module.

The key to the satellite recovery system is the satellite parachute, and its development technology is an extension of aviation parachute technology, but it is not the same. The satellite return capsule returns in orbit, the parachute opening height is high, the speed is fast, the recovery bearing capacity is large, the environmental conditions experienced are harsh, the working procedures and control are complex, and the weight and volume of the system are limited by harsh There are three occasions and ways to recover the satellite, one is in the air, hook the rope of the satellite parachute from the aircraft with a hook.

The United States was an early adopter of this type of recycling. Second, on land, parachutes land satellites at a speed of several meters per second. This method is commonly used in our country and in the former Soviet Union. Third, at sea, the satellite lands on the surface of the sea with a parachute, floats on the water with the help of a sealing device, and applies seawater dye, and ships and planes escape to recover the satellite.

The high-altitude recovery test is an important test to verify the aerodynamic reducer, i.e. the parachute recovery system. Models of recovery systems that weigh hundreds or even thousands of kilograms dropped by sounding rockets or airplanes fall to the ground by parachute, and if the deceleration system fails, the recoverables will accelerate from a high altitude to the ground. For launch vehicle tests,

When the recovered data capsule is only 1.5 seconds above the ground, the parachute can be ejected and opened in turn. In order to further study the recovery technology of the rocket and ensure the success of high-altitude recovery, the arrow adopts a deceleration device used in conjunction with a deceleration plate and a parachute. When the rocket reaches the vicinity of the apex of the trajectory, the arrow automatically separates from the rocket body, and the airbrake mounted on the recovery compartment opens at the same time.

In the process of arrow descent, due to the action of aerodynamic force, the tip of the arrow is steadily lowered towards the ground. When the arrow descends several kilometers above the ground, a parachute is automatically ejected from the recovery compartment. When the parachute is deployed, the arrow descends significantly and then a large main parachute is pulled out of the recovery chamber. After the main parachute is opened, the arrow slowly descends to the ground with a parachute and the main parachute, landing at a speed of about 6 m/s. Only when some of the above technical requirements are met can it be possible to collect and develop the recovery chamber.

Zhao Zhongyao was already very familiar with the recovery pod in the world where he was alive. He knew that the recovery capsule developed by the world's space powers before his death was arrow-shaped, not really round.

The reason why it is designed in the shape of an arrow is that when the spacecraft crashes into the atmosphere at high altitude, it is too fast to produce a high temperature of thousands of degrees when it rubs against the atmosphere. At such a high temperature, even ordinary steel has to be melted.

The sight of a meteor streaked across the sky is the result of the meteor melting in the air. Of course, the speed at which the meteor enters the atmospheric chamber is much faster than the speed of the recovery pod. After all, a meteor flies from far away space to Earth, and its initial velocity is very fast. When it falls to the Earth, it is faster, and generally speaking, the speed of a meteor when it reaches the sky above the Earth can reach a speed of 20,000 kilometers per hour.

The speed at which the re-entry capsule falls into the atmosphere is generally a few hundred meters per second. Far below the speed of a meteor. But even then, it would have been extremely hot with the atmosphere, and if the capsule had no thermal insulation, it would have burned out quickly.

Zhao Zhongyao also knew a lot about the aerospace technology of the era before his death. Of course, he could also design a bullet-shaped recovery pod. But he felt that there was a disadvantage of such a recovery module, that is, during the recovery process, the flight trajectory of the recovery module may be unstable. If it is designed to be circular, the whole flight process will be relatively stable.

Zhao Zhongyao knew that in his lifetime, the reason why he wanted to design the recovery capsule in the shape of a bullet was for the safety of astronauts.

This is because when the recovery pod falls to the ground, it rubs against the atmosphere, resulting in extremely high temperatures. The most friction with the atmosphere is, of course, the bottom of the recovery capsule. Therefore, the bottom of this recovery compartment must be designed in the shape of an arrow. Because only by designing the shape of an arrow, the high temperature generated by friction with the atmosphere when the recovery capsule returns to the ground will not harm the astronauts in the recovery capsule.

And Zhao Zhongyao knew that he didn't need such a design, he could use the nanotechnology he mastered to develop a high-temperature resistant alloy steel. With this nano-alloy, the entire design is the shell of the recovery chamber.

In this way, the recovery chamber does not need to be designed in the shape of a bullet, and it is also possible to avoid being dissolved by the high temperature caused by atmospheric friction when flying in the atmosphere.

Zhao Zhongyao has previously studied nanoalloy materials. This super heat-resistant material can withstand temperatures of up to 6,000 degrees. This temperature is much higher, the temperature produced by the recovery capsule when it crashes into the atmosphere.

Of course, in the recovery process of the spacecraft, the parachute is also very important. The weight that this parachute has to bear is also very large. After all, when an object falls into the atmosphere, it gets faster and faster due to the acceleration of gravity.

In such a situation, it would not be possible to withstand the weight of the recovery capsule with a regular parachute. It is necessary to develop a parachute made of special materials.

In terms of this technology, Zhao Zhongyao also thought of the biosteel technology he had developed before, and he knew that he could now apply this biosteel technology to the recovery cabin he wanted to develop.

Because of this, Zhao Zhongyao quickly designed the shape of this recovery pod. The entire recovery pod was different from the one in the world he had in his lifetime. Not a bullet-shaped recovery pod, but a round one.

After Zhao Zhongyao designed it, he showed it to Cheng Yu and them.

After Cheng Yu looked at the recovery cabin designed by Zhao Zhongyao, he felt a little incredible. I don't know how Zhao Zhongyao designed this recovery pod to be round.

"Mr. Zhao, why did you design this recovery pod to be round. Cheng Yu looked at Zhao Zhongyao with some puzzlement and asked.

"It's not designed to be round, you say it should be designed in any shape. Zhao Zhongyao asked rhetorically.

"Why not design it like a rocket. The recovery pod designed by Cheng Yu himself is such a slender shape. It's like a rocket.

Zhao Zhongyao listened to Cheng Yu's words, looked at him and said, "Your design is just suitable for the shape of the rocket." The recovery pod was dropped from a high altitude and did not take off on its own initiative. If it were designed to be in the shape of a rocket, it would not fall into the atmosphere very quickly. The resulting high temperatures are not going to be higher. Also, with your design, the flight trajectory of the recovery capsule is also unstable during the fall. If the recovery capsule rolls in the air, it will be very bad for the health of the astronauts.

The astronauts were in the recovery capsule, and the space was so small that they could not move at all. When the recovery capsule falls into the atmosphere, it has to bear a large image of weightlessness. If the recovery capsule is not stable at this time, the astronauts will definitely be unbearable. If there are some physiological reactions, it is very detrimental to the health of astronauts.

Only when the recovery capsule is designed to be circular, so that the recovery capsule will not roll over when it returns to the earth, and the astronauts will get a relatively stable flight state in the recovery capsule. ”

Zhao Zhongyao's explanation made Cheng Yu suddenly realize, he looked at Zhao Zhongyao and nodded and said: "What Mr. Zhao said makes sense, I didn't think about it so much!"

"Okay, let's hurry up and develop this recovery capsule! Only by developing this thing first can we proceed with the next step of the manned space program. Zhao Zhongyao knows that their current task is to develop this recovery capsule first, which is the first step of the manned space program.

Cheng Yu listened to Zhao Zhongyao's words and immediately agreed. He picked up the drawings on the table, looked at Zhao Zhongyao again, and said, "Mr. Zhao, don't worry! We will soon develop this recovery pod." ”

"Okay, you guys hurry up and go to work!" Zhao Zhongyao looked at Cheng Yu again and said.

In this way, after more than three months of hard work, Cheng Yu and his team finally developed the recovery capsule. Everything is exactly the same as Zhao Zhongyao's design.

Zhao Zhongyao was also very happy when he saw the recovery capsule developed by Cheng Yu and them. After all, everything was exactly what he thought, and this one recovery pod was the one he wanted.

The recovery pod has been developed, but what about this recovery pod. This is also going to be an experiment. If you don't experiment, who knows what kind of problems will arise when you use it.

First of all, the airtightness test of this recovery chamber is to be carried out. In other words, we have to experiment with this recovery pod to see how airtight it is. The recovery capsule is in space and is a place to keep astronauts safe. If there is a problem with the containment system, the safety of the astronauts will be threatened.

Because of this, the containment system of this recovery chamber is very important, and it is also a system that is the first to be experimented.

Although this system is very important, it is also very simple to experiment. Just keep the pod in a large pool and see if it gets water. If there is water seeping inside, then of course there is a problem, and it needs to be improved again.

But Zhao Zhongyao is also very confident, he knows that there should be no problem with the recovery pod he designed. He didn't have to worry too much about doing this experiment.

In this way, Zhao Zhongyao asked people to pull this recovery capsule from the inside of the experimental workshop to the outside, on a vacant field, Zhao Zhongyao had already asked people to prepare such a large pool.

Because of the manned space program. These facilities must be prepared well in advance. Of course, the large pool used in this experiment should also be prepared in advance.

In fact, not only will this large pool be used in the recovery capsule for experiments, but also astronauts will wear spacesuits to carry out airtightness experiments in this large pool. The spacesuit, like this recovery capsule, is to protect the lives of astronauts in space. Therefore, this airtightness experiment is particularly important.

Zhao Zhongyao now asked people to put the recovery pod in this large pool and conduct an airtightness experiment. After still entering, Zhao Zhongyao and Cheng Yu stood by the pool, watching the movement in the pool.

Because, if water enters the recovery chamber, bubbles will naturally bubble up on the water. If there is no water entering the recovery chamber, the level will be very calm.

Zhao Zhongyao and Cheng Yu can now see that the entire level, after experiencing some waves from the water entering the recovery cabin, slowly calmed down. No bubbles are coming out of the recovery pod.

"Mr. Zhao, is this recovery pod qualified, there are no bubbles coming out of it. Cheng Yu was also very clear about the purpose of this experiment, and he saw that no bubbles were coming out of the water. He thought, this recovery pod must be very well sealed.

Zhao Zhongyao listened to Cheng Yu's words, looked at the calm water surface for a while, and said: "Now it seems that there is no problem with this recovery cabin, let's fish it up first!"

After Zhao Zhongyao finished speaking, several workers pulled this recovery cabin from the pool to the ground.

After putting it away, Zhao Zhongyao walked to the front of this recovery pod again. He opened the hatch of the recovery pod and took a look inside. It was completely dry inside, and no water had entered the recovery chamber.

At this time, Cheng Yu also came to Zhao Zhongyao's side, and he also saw the situation in the recovery cabin.

"Mr. Zhao, there is really no problem with the airtightness of this recovery cabin. Cheng Yu was also very happy. After all, this step is considered a successful experiment.

"Well! Looks good. However, I don't know what kind of situation people will be in it. ”