s: Double monthly pass, please vote.
Three conditions are needed to send people into space.
In addition to developing a manned spacecraft, we must also have a vehicle with large carrying capacity and high reliability.
As well as clarifying the impact of high-altitude environment and flight environment on the human body, and finding effective protective measures.
Over the past decade or so, China has completed these three conditions, and now it is time to reap the results.
Before the Shenzhou series of spacecraft, China's aerospace system had conducted more than a dozen simulation experiments, ten of which carried living creatures, from the original mice to monkeys and orangutans.
Since China in this dimension has neither money nor technology, it has never thought of starting from a small spaceship and then proceeding to hand-made tests one by one.
China Aerospace is in one step, designing a complete large spacecraft from the beginning.
As the main spacecraft, the Shenzhou spacecraft is a heavy-duty manned spacecraft with a height of 9 meters, a diameter of 5 meters, and a fully loaded weight of 20 tons.
Both in terms of total weight and internal space, it exceeds the Apollo series spacecraft of the original space and time, and far exceeds the product of the same name from the original space and time.
This is also due to the wide gauge promoted by China.
Only with this wide gauge of 2500 mm can we conveniently transport spacecraft with a diameter of 5 meters.
Otherwise, we would have to use the same 2500 mm gauge as the United States or Russia did in the original time and space.
Lift by helicopter or build the factory next to the launch base.
Although the spacecraft is the simplest type of all manned spacecraft, it is still much more complex than unmanned spacecraft such as satellites.
It can be said that although the sparrow is small, it has all the internal organs.
Spacecraft are similar to returnable satellites, but because they need to carry people, many special systems need to be added to meet the various needs of astronauts working and living in space.
For example, environmental control and life support systems, alarm communication systems, instrumentation and lighting systems, space suits, manned maneuvering devices and escape systems for air renewal, wastewater treatment and regeneration, ventilation, temperature and humidity control, etc.
Of course, it is also crucial to master the technology of spacecraft re-entry and safe return.
Especially for spacecraft, in addition to limiting the braking overload of the spacecraft during the return process to within the tolerance range of humans, the accuracy of its landing point should also be higher than that of returnable satellites, so astronauts can be discovered and rescued in time.
This kind of accident happened in the former Soviet Union in the original time and space.
Their manned spacecraft once had poor landing accuracy, and as a result, the astronauts were trapped in the ice and snow forest and almost froze to death.
The Shenzhou series spacecraft use the most advanced technology currently mastered by China and are divided into three sections: the propulsion module, the orbital module and the return module.
Not only can they be docked with each other, but hatches are reserved on all sides of the orbital module, so that modular docking can be performed to create huge space structures.
The orbital module is equipped with huge solar panels to provide energy, and the propulsion module follows the usual practice and still has a fuel filling port on the outside, which can be used as an additional engine after refueling.
Due to the use of the most advanced computers and high degree of automation, the Shenzhou spacecraft can actually be operated automatically or remotely controlled from the ground.
The technical level is equivalent to the system in the late 1980s in the original time and space.
The previously launched Shenzhou-1 mission carried a Bornean orangutan and flew autonomously.
The general mission plan of the Shenzhou spacecraft is to have a crew of three people and can carry up to five people.
However, this is the first manned mission, so only one person is on board.
At 9:00 a.m. on September 25, under the watchful eyes of Wen Desi and related people, the Thang Long 2 rocket spewed huge flames and thick smoke and slowly lifted off.
Followed by cameras and astronomical telescopes from various places, the Shenzhou-2 spacecraft entered an orbit around the Earth with a perigee of 381 kilometers and an apogee of 423 kilometers at 9:12:53 seconds.
Then Lieutenant Colonel Huang Qi, the first astronaut on this plane of Earth, turned on the camera in the cabin, transmitted signals to the ground, and made a speech: "The blue Earth is so beautiful."
On the afternoon of September 30, after five days of flight and various artificial orbit maneuver tests, as well as docking tests with the orbital module previously left in orbit by Shenzhou-1, the return capsule of Shenzhou-2 landed safely on the Mongolian grasslands. .
Huang Qi climbed out of the return capsule, and the heavy-duty helicopter that arrived from the search successfully took him and the return capsule back to the Jiuquan Space Center.
The mission was a perfect success.
As for the orbital module of Shenzhou-2 that remains in orbit, the remaining fuel was previously used to push it to a slightly higher orbit of 600 kilometers, and together with the orbital module of Shenzhou-1, it will be built as the future space station "Tiangong-1" Basic material module.
October 5, 1937, 2778 AD, Xuanpu Town, central East Kazakhstan, Anxi Province Xuanpu Town is located at the foot of Aksolan Mountain.
This is a newly established town less than five years ago.
Its name comes from the place where the Yellow Emperor ascended to heaven.
However, this town is not open to the outside world.
All the families of soldiers and scientists live here, and the level of confidentiality is very high.
Because this is where the Xuanpu base of "Tongtian Bridge" is located.
Wei Ken, the host of the Tongtian Bridge Project, was briefing Wen Desi and others on the current status of the Tongtian Bridge.
"The bridge is located in Xuanpu Town, with a total length of 1,500 kilometers and a tunnel diameter of 15 meters.
Free novels bring you joy and joy ---> storyskyline.net
The main body is 100 to 180 meters underground.
The exit is at the junction of Xinjiang and Monan, on a peak in the Altai Mountains.
The altitude is 3147 meters,” Wei Ken said.
"Mr.
Wei, this Tongtian Bridge is too long."
At this time, a young scientist coming from Jiuquan Base couldn't help but said.
"This kind of cost is too much, and it is not as good as our rockets.
The price of building this Tongtian Bridge has already exceeded 20 billion.
These funds are at least enough for us to launch 10,000 Shenglong 2 rockets."
This energetic young man is called Qian Xuesen.
He is a talented scientist.
He is only 26 years old this year and is already the chief engineer of the Rocket Research Institute.
This time he came here with his colleagues from the Rocket Research Institute to work with the Institute of Electromagnetics. comminicate.
In other words, this is an exchange between the two major aerospace project teams of the "Moon Flight Plan" and the "Tongtianqiao Plan".
But how to put it, as the saying goes, "Enemies are enemies in the same industry", this saying can be applied to almost any industry.
Although the "Flying to the Moon Project" and the "Tongtianqiao Project" are not the same, they are both aerospace project teams, so there will naturally be disputes over funding.
Even gentle scholars will change their minds once they encounter competition for budgets and funds. into an angry rhino.
In order to compete for funds and resources, the "Moon Flying Project" and the "Tongtian Bridge Project" often had a lot of verbal quarrels.
It is very normal to make fun of each other.
The old guys at the Rocket Institute kept silent and deliberately let young people like Qian Xuesen come forward.
Anyway, Mr.
Wen valued this genius very much.
Even if he said something wrong, there would be no problem.
Of course, there are people here at the Institute of Electromagnetics.
Immediately, a scientist about the same age as Qian Xuesen stood up to refute.
The old man adjusted his glasses and said with a smile: "Director Qian, can I ask a question?"
"Please tell me."
Qian Xuesen glanced at this person.
He knew that this person was called Zhong Qijian.
He was Tesla's favorite disciple and a genius.
He was now the backbone of the Institute of Electromagnetics.
Zhong Qijian asked: "When your rocket is launched, how many times the gravity acceleration will it be?"
"As we all know, when our launch vehicles are currently launched, if they are carrying satellites and other equipment, the acceleration due to gravity is generally 8 to 10 times.
The manned rocket delays the combustion process, and the acceleration is 5 times gravity."
Qian Xuesen couldn't help blurting out, As soon as he said it, he was shocked and knew that he had fallen into a trap this time.
Sure enough, Zhong Qijian smiled evilly and said, "Thank you, Director Qian, for answering my question.
The maximum gravity acceleration that a normal person can withstand is no more than three times, and the slowest launch vehicle has an acceleration of 5 times gravity.
This makes Our manned rocket can only carry specially trained astronauts, Director Qian, you can't withstand 5 times the acceleration of gravity."
"Uh" Qian Xuesen knew that he had been fooled, and his face turned red and he was speechless.
"The characteristic of our mass projector is that it can reduce the gravitational acceleration during accelerated launch by extending the acceleration orbit, so that it can reach a level that ordinary people can bear.
Of course, the lower the acceleration, the longer the orbit.
The construction cost will naturally be higher.
Therefore, the key to the design of Tongtian Bridge is to shorten the length of the acceleration track as much as possible if the average passengers or materials can tolerate it.”
"This length is only determined by the exit speed and mid-section acceleration.
Based on the crane's appearance design, we set the exit speed at 9,000 meters per second, which is approximately 1.1 kilometers higher than the first cosmic speed of 7.9 kilometers, approximately More than 13.9 in this article.
Free novels bring you joy and joy ---> storyskyline.net
Under this condition, we set the uniform acceleration of the passenger crane at 2.75 times the gravity.
At this time, the required track length is about 1486 kilometers.
Including the station and maintenance area at the front end, and the protection section at the exit end, the total length is: for 1,500 kilometers.”
"However, this length does not have to be used up entirely, because now we have developed a new type of anti-gravity suit and anti-overload cockpit, which can increase the anti-overload capability of ordinary people to a level of 5.5g, so that the track can be shortened to About 800 kilometers, so our current Tongtian Bridge is not It has not been repaired to 1,500 kilometers, but only to Xuanpu.
Although the remaining 700 kilometers of tunnels have been dug, they are only used as backup and no equipment has been installed, so our budget has not spent as much as 20 billion.
Director, your information is a little behind," Zhong Qijian said with a smile.
The faces of the Rockets Institute are not very good.
The Electromagnetic Institute is their biggest opponent in terms of funding and resources.
Now they are at a disadvantage in front of Mr.
Wen, which makes them very depressed.
That new type of anti-gravity suit has already been used on rockets, but the most effective anti-gravity cockpit is more troublesome, because that thing requires a lot of space and a lot of weight, even the smallest single-person version.
It weighs more than 2 tons and is not suitable for installation in a rocket-launched spacecraft.
You know, launch vehicles are notorious for being "careful about every detail".
They would like to use one gram as one pound.
If there is an extra cabin weighing several tons, then should we do business?
But this is a very difficult problem for the rocket. , it doesn’t matter for the mass projector.
The maximum load of this kind of thing is 720 tons.
It is not a problem to leave a few tons of weight for the anti-overload cockpit.
At this time, Wen Desi stepped forward to smooth things over: "Everyone, the Institute of Rocketry and the Institute of Electromagnetics are both very important departments.
Launch vehicles and mass projectors are important components of our country's aerospace industry, and both are indispensable.
It is undeniable, At present, in the launch stage, it is true that mass projectors have advantages, but our spacecraft cannot be launched.
Never mind.
You have to change direction.
You need to stop and start again.
It is impossible to bring the mass projector with you at this time.
In addition, compared with rockets, mass projectors are not flexible enough and not cheap enough.
We can build them across the country.
There are multiple rocket launch bases, but for a bridge like this, I think one is enough for now."
Wen Desi smiled and said: "To be honest, the cost of this thing is really too expensive."
It is true that it did not cost 20 billion, but it reached 15 billion, which is equivalent to building the Chinese navy twice more.
After calming down both sides, Wen Desi and the others got down to business.
Of course he didn't come here just to watch the two sides talk, because China's second manned space mission is about to be carried out here.
That's right, this time we used a crane.
"What is the maximum size and load of the crane?"
Wen Desi asked.
"The largest crane size is 12 meters in diameter and 66 meters in length.
The empty weight of the truck is 60 tons and the maximum load is 660 tons.
Because a lot of equipment is added to the passenger car, the empty weight increases to 160 tons and the maximum load is 560 tons.
The passenger cabin is divided into On the third floor, there are a total of 1,000 passenger seats except for drivers and waiters," Wei Ken introduced with a smile.
"Huh!"
Rockets gasped after hearing this.
"Of course, this launch is not the largest model of passenger car.
This mission is of an experimental nature and will transport materials for the construction of Tiangong-1, so this launch is a truck with only 12 astronauts.
They After the materials are delivered to the predetermined orbit, the construction of Tiangong-1 will be carried out based on the orbital module left by the Shenzhou spacecraft.”
At this time, a team of astronauts wearing space suits walked in.
Free novels bring you joy and joy ---> storyskyline.net
They all gave military salutes to Wen Desi.
"The Tiangong construction team reports to the chief and is ready together.
Please ask the chief for instructions."
The leader is Colonel Lei Dong, an ace from HNA.
"Thank you for your hard work.
I wish you a safe journey."
Wen Desi shook hands with each of them and said, "Due to regulations, you cannot drink Zhuangxing wine.
When you come back, I will hold a celebration banquet for you."
Although the Tiangong construction team did not drink Zhuangxing wine, they still followed the pilot's practice and wore safety charms and Chinese knots, and each of them also brought an apple.
Also at 9:00, this time the "Yellow Turban No. 1" overhead crane started, and it slid out silently carrying 12 astronauts.
The 500 tons of materials carried in the same vehicle were used to assemble and build Tiangong-1.
The crane moves at an acceleration of 5.5g and 54 meters per second.
The camera on the main screen switches rapidly as the crane moves forward, always following the crane closely. 166 seconds later, the crane reached the exit.
After arousing a huge sonic boom cloud, the crane shrunk to a small bright dot for just a flash on the camera.
It was almost difficult for the naked eye to follow an object traveling at nine kilometers per second, so everyone turned their attention to the other two radar screens.
The launch of the "Yellow Turban Lishi 1" crane was very successful.
The crane reached the predetermined orbit at 9:05.
Then the booster rocket was started and the crane began to adjust its attitude and approach Tiangong-1.
At 9:27, the two sides successfully docked.
At this time, the hatch of the overhead crane opened, and the 12 astronauts floated out of space with safety ropes attached, and began mankind's first spacewalk, and it was a collective spacewalk.
The robot hand grabbed out the supplies one by one, and the astronauts began the construction of Sky-1.
"Bah bang bang!"
Everyone in the command center applauded together
.
: