Chapter 1049: Successfully developed recovery cabin

The first thousand and seventy-six chapter recovery capsule was successfully developed
But no matter what, everyone's enthusiasm is still quite high, and Zhao Zhongyao is naturally unwilling to discourage everyone. So, he just put these ‘works’ in his office.
Zhao Zhongyao naturally dismissed the spacecraft images designed by these people. Of course he himself knew what this spaceship should be designed into.
In fact, the spacecraft in the manned space program is just a recovery capsule. Since it is to be recovered, it should of course be designed in a circular shape. Because only the circular shape can be more stable when flying in the air.
But when the recovery capsule falls from a high altitude to the surface of the earth, its speed will become faster and faster due to the effect of gravitational acceleration. At this time, the outside of the recovery compartment will endure thousands of degrees of high temperature. If the material on the outside of the recovery compartment is not strong enough, it will certainly not be successful. When the high temperature generated by the friction between the recovery tank and the atmosphere is enough to melt the recovery tank.
Therefore, to develop a recovery tank, the first thing is to find a metal material that is super high-temperature resistant. Of course, during the recovery process of the entire recovery tank, its speed is constantly reduced. This also requires several decelerating parachutes on the recovery tank. This is a design task that needs to be completed when designing the recovery tank.
The key to the satellite recovery system is the satellite parachute. Its development technology is an extension of the aviation parachute technology, but it is not equivalent. The satellite return module returns in orbit, with high opening height, high speed, large recovery load, harsh environmental conditions, complicated working procedures and controls, and strict restrictions on the weight and volume of the system. There are three occasions and methods for satellite recovery. One is in the air, hooking the rope of the satellite parachute from the plane.
The United States adopted this recycling method in the early days. The second is that on land, a parachute causes the satellite to land at a speed of several meters per second. This method is commonly used in my country and the former Soviet Union. The third is at sea, the satellite uses a parachute to land on the surface, floats on the water with the help of a sealing device, and releases seawater dye, and ships and planes escape to retrieve the satellite.
The high-altitude recovery test is an important test to verify the aerodynamic reducer, that is, the parachute recovery system. A recovery system model weighing hundreds or even thousands of kilograms dropped by sounding rockets or airplanes floats to the ground on a parachute. If the deceleration system fails, the recovered materials will accelerate from a high altitude to the ground. For the launch vehicle test,
When the recovered data compartment is only 1.5 seconds off the ground, the parachute can be ejected and opened in sequence. In order to further study the recovery technology of the rocket and ensure the success of the high-altitude recovery, the arrow adopts a reduction gear combined with a speed plate and a parachute. When the rocket reaches near the apex of the ballistic trajectory, the arrow automatically separates from the body of the rocket, and the air brake mounted on the recovery compartment opens at the same time.
As the arrow descends, the tip of the arrow steadily descends towards the ground due to the aerodynamic force. When the arrow descends a few kilometers away from the ground, a deceleration parachute is automatically ejected from the recovery compartment. After the deceleration parachute is opened, the arrow's descending speed is significantly slowed down, and then the deceleration parachute pulls out a large main parachute from the recovery compartment. After the main parachute was opened, the arrow took the deceleration parachute and the main parachute slowly descended to the ground, landing at a speed of about 6 msec. Only when some of the above technical requirements are met, it is possible to develop the recovery cabin.
Zhao Zhongyao was already familiar with the recovery pod in the world before he was alive. He knew that the recovery capsules developed by the major aerospace powers in the world before his death were all arrow-shaped, not really circular.
The reason why it is designed to be in the shape of an arrow is that when a spacecraft falls into the atmosphere at a high altitude, it will generate thousands of degrees of high temperature when friction occurs between it and the atmosphere due to its speed. Such high temperature will melt even ordinary steel.
The sight of meteors that we see across the sky is the result of the meteors being dissolved in the air. Of course, the speed of the meteor entering the atmospheric chamber is much faster than the speed of the recovery capsule. After all, the meteor came from far away to the earth, and its initial velocity was very fast. When it falls on the earth, its speed is faster. 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 return capsule falls into the atmosphere is generally only a few hundred meters per second. Far below the speed of a meteor. But even in this way, it will generate extremely high temperatures with the atmosphere, and if the return cabin does not have insulation, it will burn out very quickly.
Zhao Zhongyao also knew a lot about the aerospace technology of the era before his death. Of course, he can also design a bullet-shaped recovery capsule. But he felt that such a recovery capsule has a disadvantage, that is, during the recovery process, the flight trajectory of the recovery capsule may be unstable. If the design is round, the whole flight process will be relatively stable.
Zhao Zhongyao knew that in his lifetime, the reason why the recovery capsule was designed into a bullet shape was for the safety of astronauts.
Because when the recovery tank falls to the ground, it will rub against the atmosphere and generate extremely high temperatures. The most severe friction with the atmosphere is of course the bottom of the recovery tank. Therefore, the bottom of the recovery compartment must be designed in the shape of an arrow. Because only designed in the shape of an arrow can 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 did not need such a design, he could use his own nanotechnology to develop a high temperature resistant alloy steel. With this nano-alloy steel, the whole design is the shell of the recovery chamber.
In this case, it is not necessary to design the recovery capsule into a bullet shape, and it can also avoid being melted by the high temperature caused by atmospheric friction when flying in the atmosphere.
Zhao Zhongyao has studied nano-alloy materials before. This super heat-resistant material can withstand high temperatures of 6,000 degrees. This temperature is far higher and dry, the temperature produced when the recovery capsule fell into the atmosphere.
Of course, the parachute is also very important during the recovery of the spacecraft. The weight of this parachute is also very large. After all, when an object falls into the atmosphere, it will get faster and faster due to the acceleration of gravity.
In such a situation, if a normal parachute is used, it will not be able to bear the weight of the recovery tank. A parachute made of special materials must be used.
As for this technology, Zhao Zhongyao also thought of the bio-steel technology he had developed before. He knew that he could apply this bio-steel technology to the recovery chamber he was going to develop now.
Because of this, Zhao Zhongyao quickly designed the shape of the recovery cabin. The entire recovery compartment is different from the recovery compartment in the world before his death. Not a bullet-shaped recovery compartment, but a circular recovery compartment.
After Zhao Zhongyao finished the design, he showed it to Cheng Yu and the others.
After Cheng Yu looked at the recovery pod designed by Zhao Zhongyao, he felt a little incredible. I don't know how Zhao Zhongyao designed this recovery cabin into a circular shape.
"Mr. Zhao, why did you design this recovery capsule into a circular shape?" Cheng Yu asked, looking at Zhao Zhongyao with a little puzzled.
"It is not designed to be circular, what shape do you think it should be designed." Zhao Zhongyao asked back.
"Why not design it into a rocket-like shape." The recovery pod designed by Cheng Yu himself has such a slender shape. It's like a rocket.
After hearing Cheng Yu’s words, Zhao Zhongyao looked at him and said,
Your design is just suitable for the shape of the rocket. The recovery capsule fell from a high altitude, not taking off actively. If it’s designed in the shape of a rocket, it will fall. The speed into the atmosphere will not be very fast. The high temperature generated will not be higher. Also, with your design, during the fall, the flight trajectory of the recovery capsule is also unstable. If the recovery capsule rolls in the air, That is very detrimental to the health of the astronauts.
In the recovery capsule, the astronauts have very little space and cannot move at all. When the recovery capsule falls into the atmosphere, it has to bear a great weightless image. If the recovery capsule is not stable at this time, the astronauts will definitely be intolerable. If there are some physiological reactions, it will be very detrimental to the health of the astronauts.
Only when the recovery capsule is designed to be circular, 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: "It is still reasonable for Zhao Zhongyao to say, I didn't think so much!"
"Okay, let's quickly develop this recovery capsule! Only if this thing is developed first can we proceed with the next manned spaceflight program." Zhao Zhongyao knew that their current task was to first develop this recovery capsule. To be developed, this is the first step of the manned space program.
After hearing what Zhao Zhongyao said, Cheng Yu agreed immediately. He picked up the drawing on the table, looked at Zhao Zhongyao and said, "Mr. Zhao, don't worry! We will develop this recovery pod soon."
"Okay, hurry up and go to work!" Zhao Zhongyao said while looking at Cheng Yu again.
In this way, after more than three months of hard work, Cheng Yu finally developed the recovery capsule. Everything is exactly the same as Zhao Zhongyao designed.
When Zhao Zhongyao looked at the recovery capsule developed by Cheng Yu and the others, he was also very happy. After all, everything is the same as he thought, this recovery pod is the one he wants.
The recovery tank has been developed, but what about this recovery tank? This also requires an experiment. If you don’t experiment, who knows what problems will arise when you use it.
First, we must conduct an air-tightness test on the recovery cabin. In other words, we need to experiment with this recovery compartment to see how tight it is. The recovery capsule is in space and is a place where astronauts live safely. If there is a problem with the closed system, the safety of the astronauts will be threatened.
Because of this, the closed system of the recovery tank is very important, and it is also a system that needs to be tested first.
Although this system is very important, it is very simple to experiment. Just put the recovery tank in a large pool and see if it will get water. If there is water seepage inside, of course there will be a problem, and it needs to be improved again.
But Zhao Zhongyao is also very confident. He knows that there shouldn't be any problems with the recovery compartment he designed. He didn't need to worry too much about doing this experiment.
In this way, Zhao Zhongyao asked people to pull this recovery capsule from the experimental workshop to the outside. On a clearing, Zhao Zhongyao had already prepared such a large pool.
Because of the manned space program. These experimental facilities must be prepared early. Of course, the large pool for this experiment has to be prepared in advance.
In fact, this large pool is not only used for experiments on the recovery capsule, but at that time, astronauts will also wear spacesuits in this large pool for air tightness experiments. The spacesuit, like this recovery capsule, is to protect the lives of astronauts in space. Therefore, this air tightness experiment is particularly important.
Zhao Zhongyao now has people put the recovery cabin in this large pool for an air tightness 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 tank, there will naturally be bubbles on the water. If no water enters the recovery tank, the level will naturally be very calm.
Zhao Zhongyao and Cheng Yu can now see that the entire level, after experiencing some waves caused by the recovery tank entering the water, slowly calmed down. No bubbles emerged from the recovery compartment.
"Mr. Zhao, is this recovery chamber qualified? No air bubbles come out of it." Cheng Yu is also very clear about the purpose of this experiment. He saw no air bubbles coming out of the water. He thought, this recovery compartment must be very tightly closed.
After hearing what Cheng Yu said, Zhao Zhongyao looked at the calm water for a while, and said: "Now it seems that there is nothing wrong with this recovery tank. Let's get it up first!"
After Zhao Zhongyao finished speaking, several workers pulled the recovery tank from the pool to the ground.
After putting it away, Zhao Zhongyao walked to this recovery pod again. He opened the door of the recovery compartment to take a look at the situation inside. Seeing that it was completely dry inside, no water had entered the recovery tank.
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 capsule." Cheng Yu was also very happy. After all, this step is considered a successful experiment.
"Yeah! It looks good. However, I don't know what it will be like inside."