I ask you to build tractors, but you build rockets?

This result is very gratifying.

Even though the cost of the last Tengyun will exceed 3 billion yuan, its convenience of use and response speed are much faster.

Even if the single-flight economy may have no advantage over traditional spacecraft—or even be higher, one cannot deny the importance that Tengyun represents: it is SSTO.

It flies into orbit in a single stage without abandoning anything except fuel, and can return to the ground with all its tail intact!

It has almost ushered in a new era of aerospace. Such a product may be troublesome in the early stage, but its prospects are unimaginable.

To be honest, the space agency was very nervous when the Tengyun project was changed from two-stage orbit to single-stage orbit. It extended the time expectation from 2025 to 2030, and even 2035 is acceptable. No one expected that this thing would progress like this. So quickly, it has reached the point where targets can be set!

The boss stood up straight with some excitement: "Great, great, when will it fly? Can a demonstration aircraft be built for its first flight this year?"

Lin Ju nodded: "Yes, Serev plans to build two verification aircraft. If there are no accidents, it will be no problem to conduct a first flight within this year."

Academician She: "I still can't believe it... I always thought SSTO was a dream. Once this thing flies, we can draw a line with the aerospace industry. It can be called the advantage of a dreadnought over a pre-dreadnought... How did Serev make it? The empty weight is controlled to less than fifty tons? This is something that has to go back and forth to the atmosphere."

"The fourth generation thermal insulation technology is even more advanced than the H2." Lin Ju gestured after speaking.

“The structure is simplified as much as possible. There are only four layers of materials from the outermost skin to the inner wall of the fuselage, and the curved surface is processed and formed in one piece. And can you imagine, the outer wall thickness of the aerospace plane can even be thinner than that of some passenger aircraft.

We have invested almost an additional billion yuan in this, and this will also increase the man-hours and costs significantly, but it is worth it. This technology reduces the weight of the aircraft body by at least 20%. "

"Hiss" Everyone already knew what Lin Ju was going to say.

"So Xinyuan hopes that Tengyun Engineering will receive an additional payment of no less than 3 billion yuan to support the cost of manufacturing the first prototype and technology upgrades..."

The boss finally couldn't help it anymore: "Xiao Lin, although the Tengyun Project is of great significance, the funding requirements are too terrifying."

Lin Ju: "If we develop step by step, it will cost more to complete it in ten or even twenty years. We will save future expenses."

"But why do I feel that there will be all kinds of places to spend money in the future?"

"..."

Lin Ju forcibly suppressed the urge to nod. Money must be spent. How can one make progress without spending money?

However, the boss didn't say anything more. It was not up to him to make the decision on such a big matter, but he would definitely be scolded again. This year, every time the space agency made suggestions, he asked for additional budget, and received envy and dissatisfaction from various departments.

He decided to put some pressure on Xiao Lin:

"You don't have any plans for the evening? Why don't you come to my house and sit down? I have a nephew who has always admired you and wants to meet his idol..."

"This nephew, is he a boy or a girl?" Lin Ju interrupted directly.

"What difference does it make if you are a boy or a girl? Last Spring Festival my family asked you to come over for dinner but you didn't come. You are not allowed to leave this time."

"..."

After all, Lin Ju had no intention of boldly speaking out about his crazy idea of ​​living with a robot, so he nodded and agreed.

…

"ISS organized a meeting on the International Space Station expansion plan and the construction of new functional modules, and Montal and Yuri flew to Paris to discuss it."

On April 6, representatives from all ISS member states sat together and met in Paris.

There was no way around it, but the footage of the five astronauts inside the Advance had spread everywhere, arousing a huge public response.

Among them, the most impactful one and the most widely circulated on TikTok is a "challenge" completed with astronaut Tang Hubing.

He was pushed by two other astronauts from the bottom of one spoke cabin. He curled up his legs and flew forward without touching the cabin wall. He flew directly through the central node cabin to the bottom of the opposite spoke cabin. The total distance was just It was a good 100 meters, and the whole journey was very extreme without any deviation or bumping into anything.

A camera was fixed on his clothes, which faithfully recorded the entire process of floating forward without power for 100 meters, showing the world the vastness inside the Forward space station in the most simple way.

One hundred meters, it only takes Usain Bolt 9.58 seconds to run from one end to the other on Earth, but it took humans more than half a century to create this distance from Gagarin to space. One hundred meters of connected living space.

If it weren't for the fear of not being able to stop and hitting his head, Tang Hubing could have used the advantage of low gravity to reach a speed that even Bolt could not achieve and break the new 100-meter record. However, that was too dangerous and the ground did not allow it.

The impact of this video on the aerospace industry was beyond imagination, and it directly stimulated all member countries to prepare to take a few more steps forward.

Montal took advantage of the situation and directly released a plan to expand six cabin sections and increase the mass of the truss by 230 tons. Lucia launched a big move: HGD rigid rotating gravity cabin section.

Of course, it is not a behemoth like the Advance space station, but a smaller and more mini centrifugal cabin section.

The rotation diameter is only 40 meters, which is much smaller than the 120 meters of the Advance. There are only two living compartments, and the overall weight is less than 30 tons.

But the gravity generated by this little thing is even greater than that of the Forward. The Forward only produces 0.28G of gravity, while this mysterious centrifuge cabin can produce 0.5G of gravity, at the cost of a speed much higher than the two per minute of the Forward. laps, reaching five laps per minute.

Not only is the diameter smaller, but the angular velocity is also greater, exceeding the maximum speed threshold of two revolutions per minute that scientists previously believed.

A small diameter means that when the human body is in an upright state, the gravity from top to bottom is unevenly distributed. A large angular velocity will cause the brain to experience uncomfortable symptoms such as dizziness, nausea, and disorientation. In severe cases, it may even lead to coma.

Of course the proposer of the plan knew this, so the two centrifugal cabin sections were not used for the astronauts’ living conditions at all: they were sleeping cabins.

When you lie down to accept the centrifugal force, there will naturally be no problem of uneven gravity. Moreover, being unable to see a reference object while asleep can greatly reduce the feeling of dizziness.

The designer's idea is to allow astronauts to get in and accept 0.5G gravity while sleeping. Eight hours of sleep can provide two to three hours of exercise without gravity, extending working hours during the day and improving health. No need to put in the effort to exercise yet.

But the most important thing is that it is very cheap. The design cost of the entire cabin is between 1.5 billion and 2 billion US dollars. It is only a fraction of the cost of building a huge centrifugal space station, and the technical requirements are much simpler.