Rebirth: Fight For Life

   Chapter 787 Rotate! Space City!

   In the days when the bearded Gu Song came back and started traveling around the world with Xie Yinran, HSDA has been holding meetings and discussions.

   It was not until the end of the year that the HSDA finally reached a consensus.

  Going is a must, if it is true? The earth also wants to fight for hundreds of years less.

   As for if there is really some kind of risk, then everyone must be prepared to sacrifice for the earth.

  We have prepared many kinds of plans for possible risks. For example, in the contact step, the Flint Space City will not all enter the distance range mentioned by the alien creation, but there will be an advance team, which will take the Dragon King to go.

   For example, Gu Song and others, who are more confident, will start receiving "education" and "testing" after confirming safety.

   Such an arrangement has made many countries excited. The greater the risk, the greater the reward!

  Who knows how difficult it is? What if it passes the test directly and becomes a seed sequence?

   This martyr must rush to apply!

   As for the composition of the staff…

   In the end, the 105 people of HSDA were divided into two parts.

  55 places, allocated by the Academy of Human Sciences, the upper limit of age is 40, and it is called the "Prince Group".

   The remaining 50 were selected from the Flint University of Aeronautics and Astronautics, and were called "Youth Group".

   Small countries are helpless, and so are the later big countries.

  In the Academy of Anthropology, the largest number of people are naturally those countries that have joined the group for a long time.

  In addition to well-known scientists, HSA also has some research institutes, which include masters, doctors and postdoctoral fellows led by scholars.

   And Flint University of Aeronautics and Astronautics naturally started a global enrollment expansion for the 2016 academic year.

   An expansion that may affect the fate of the entire human race.

  …

  Changwen's Astronaut Training Center, all those who received invitations are trained here.

   For their training, the intensity is not large.

   After all, they won't be weightless all the way, and they don't need to have complicated tasks.

   "We are risking our lives to attend his wedding." Tao Xue curiously looked at the scene in the spacesuit helmet, and then said to Liu Daqing.

   "That guy is very stable. You didn't see him huddled in the country for so many years, until now he locked Ami in a small dark room before going on a trip?" Liu Daqing took her hand, "Don't worry."

   "Tsk tsk tsk, such a special wedding should be known to the world."

  Liu Daqing glanced at her and said, "Lao Gu said that his wife doesn't like to be stared at by many people. When she went to your house at that time, your enthusiasm and curiosity made her a little embarrassed."

  Tao Xue raised her head and shook his hand: "Be cold to you at night, lest you talk about me. I and Zhang Xiao went to find Miss Xie's best friend to play with!"

   After saying that, as soon as he pressed his hands on the model bulkhead, he floated towards Misha.

  Deng Yihui also floated over when he saw this.

   "Daqing, Brother Ikki, how are you feeling?" On the communication channel, Bai Yang asked with a smile.

  Liu Daqing calmly felt the state of weightlessness: "Fortunately, after all, in terms of space perception, I have already experienced it in "The Astronaut". Speaking of which, you don't need to train?"

  Deng Yihui said: "He probably played it a hundred and eighty thousand times."

"Your question is too redundant. I maintain the entire training center's system on a daily basis. Do you think I still need training?" Bai Yang's voice snarled, and he said excitedly, "I tell you, Lao Gu. The big guy next to us is the one who brought the computer to us at the beginning. He is the commander of Ying Longwang. I see that he has been transporting things to the space city recently, as well as wine. Daqing, I think you need to train again. Weightlessness after getting drunk."

  Liu Daqing paused, then scolded: "Damn! It's too extravagant! Are you planning to hold a banquet in space? Isn't it just a ceremony?"

"If there's only one ceremony, why do you have to be brought in for training?" Bai Yang said with a smile, "There is artificial gravity in the annular cabin, and it is also the seat belt for the whole journey in the aerospace plane. It is rare to go up, of course, let you feel it in advance. Future space life."

Deng Yihui glanced at Wang Suizhen who was not far away, and then said: "In our material department, not many people have this opportunity to receive training. Wang Suo also joked that he didn't expect to have his first chance to go to heaven because of his wedding. .Luxury is indeed luxurious, and this is a higher treatment than the legendary space black card club members."

   "Forget it, it doesn't matter. After all, it's pointless to use money to measure him. Let's have a good time." Liu Daqing said, "Little Bai Yang, you even made fun of my drinking capacity, and we will decide the outcome in the sky!"

  …

People like   Wang Peiji are already grown-up children, and their circles are also more different.

   After training, they gathered together on the balcony of the apartment, and a few people talked about their concerns.

   "My old man, did you ask you to cultivate a 'seed'?"

  Huo Yushan listened to his words and said directly: "This still needs to be cultivated? If Gu Song can really pass the test, he can go with him in the future. My whole family is a seed!"

   "You're dashing... Who knows what's in the universe?"

   "So you don't have to worry about these things now, after all, there are no shadows. I didn't take care of Gu Song's own attitude, and I didn't really pay attention to preparations? Damn, it's because he gave an excuse for a honeymoon before marriage!"

   "Hey, I'm under a lot of pressure. I'm so old, and I'm still having one or two babies..."

   "...You were too rambunctious when you were young, and now your kidneys can't work, right?"

"…roll…"

  …

  In space, Fan Yuanbai reconfirmed the detection of each system, and then officially ordered: "The rotation starts! Take your time and pay attention to the pressure reading!"

   "20% power, give 10 seconds first!"

   Outside the annular scientific research cabin of the Flint Space City, three groups of 12 annular cabin rotating nozzles distributed at the junction of the truss and the passage began to work.

  The gentle thrust gradually builds up.

   Huge annular chamber, barely moving.

   "Displacement observed, the current angular velocity is 0.0001 radians per second!"

   "The air pressure is normal!"

   "Spindle pressure is even!"

  Fan Yuanbai nodded: "Yes! Give 50% power for another 10 seconds!"

The    vent was obviously stronger, and the annular scientific research module began to slow down and start to rotate visibly.

  To create artificial gravity through centrifugal force generated by rotation, the threshold required is very high.

   To achieve an artificial gravity of 1 G by rotation, you need the radius of the annular chamber multiplied by the square of the angular velocity. So, either increase the radius of the annular cabin, or increase the angular velocity.

   This is not only about the amount of space engineering and the strength of materials, but also one point: a creature like a human can't stand it.

  You must know that if the rotational speed that a normal person can withstand exceeds three revolutions per minute, it will cause serious discomfort.

   So, if you do the math, if the radius of the annular cabin is only 15 meters, what is the rotational speed to achieve an artificial gravity of 1 G? 1.3 radians per second, 12.4 revolutions in 1 minute.

  If there is only such a small radius, then in such an artificial gravity environment, no matter what kind of physical fitness of astronauts, one is counted as one, either dizzy or vomiting.

   This is the high threshold of artificial gravity.

   Now, with a radius of 150 meters, if the annular scientific research module wants to reach a standard gravity of 1 G, its rotational speed also needs to reach more than 2 revolutions in 1 minute, which is very exaggerated and can be described as the limit.

   Therefore, it is used as a research and work area, and in actual state, it does not provide a complete 1 G gravity.

The living cabin with a diameter of 500 meters can achieve a standard gravity of 1 G at a speed of less than 2 revolutions per minute, so that people can live relatively freely in it, and there will be no loss of calcium due to long-term weightlessness. other physical conditions.

   Right now, this annular scientific research module must first test whether it can operate stably at an angular velocity exceeding 0.25 radians per second.

   That's when it hits the standard rpm of 1 G.

  In the daily state, it can maintain 0.4 G.

   "0.21 radians per second, the speed has exceeded 2 revolutions per minute!"

   "Spindle pressure is even!"

  Fan Yuanbai nodded: "Go to 1 G and keep it for 1 hour. Then drop to 0.4 G and keep it for 12 hours. Pay attention to adjusting the power according to the resistance."

   Right now, for the convenience of construction, the Flint Space City is still in low-Earth orbit. Although the air is already extremely thin, it will still have a weak effect.

  The work in space, that is, every bit of impact, must be counted.

  …

  On the ground, Flint Space City has become a very easy-to-observe star in the sky.

   After the announcement of the enlightenment plan for alien creations, the historical significance of the Flint Space City has been even more elevated.

   Whenever Flint Space City flies over different areas, local astronomy enthusiasts will always take out their astronomical telescopes and follow the traces of Flint Space City.

   On this day, many places confirmed the observation results and compared the pictures I took.

   Soon, people on the Internet began to tell each other: the ring cabin of the Flint Space City began to rotate!

   (end of this chapter)