After the meeting, the Xiaguang aerospace aircraft was officially approved, and Hou Guang was still in charge.

Time passed day by day, and the time quickly reached the end of January.

After a long wait, the Bureau of Science and Industry, the Space Administration and other units jointly announced the winning results of the manned lunar landing program on the official website.

Without any suspense, Xiangrui, the first to achieve a 50-ton low-earth orbit delivery capacity, won the competition without any suspense and successfully won the bid for the most important project of the entire manned lunar landing project - that is, the project on the launch vehicle.

In fact, at this point, it doesn't matter if there is a gambling contract or not.

After seeing the excellent performance of the Xiangrui, I believe that anyone with a normal IQ will make the right choice.

A total of 10 billion funds were in place, which quickly solved the urgent need of Star Technology.

According to the agreement with Ahri Group, Star Technology repaid all the corporate loans, and used the remaining funds to start the final preparations for the upcoming manned lunar landing program.

As for the lunar module, command module, service module, extravehicular space suit, lunar rover, circumlunar communication satellite and other components necessary for the lunar landing project, more than a dozen aerospace enterprises such as the Aviation Science Group won the bid.

Many of these projects have already been completed, such as the most critical command module and the lunar module, which were exhibited by the powerful Hangke Group as early as December last year.

As long as the high-thrust rocket with a transmission capacity of more than 24 tons to the Earth and the Moon is completed, the entire lunar landing project can be started at any time.

Judging from the current carrying capacity of the Xiangrui, there is no doubt that this condition has been met.

After meetings and discussions between high-level and various departments, the manned lunar landing program was finally set for the day before the Spring Festival in 2021.

In less than a month before the Spring Festival, the main task of Star Technology is to discuss and formulate specific launch plans with other participants in the lunar landing project, and coordinate specific launch work.

The funds allocated by the state this time are quite sufficient, and the beautiful performance of Xiangrui in the test flight has also greatly boosted the confidence of domestic aerospace enterprises, and all participating units have come up with a successful momentum, ready to present a special New Year gift to the people of the country and even the world in the upcoming Spring Festival.

Early morning at the end of January.

Sun Chengping, the boss of Hangke Group, arrived in Jinling by plane with several experts.

A black sedan stopped at the door of the space shuttle assembly center in a low-key manner, and after getting out of the car, Sun Chengping enthusiastically stretched out his right hand and stepped forward, holding Lu Zhou's hand and shaking it.

"I'm glad to meet you, I've heard of Professor Lu's name for a long time."

"Mr. Sun is polite," Lu Zhou responded with a decent smile, and after letting go of his hand, he made a gesture of please, "Leave the greetings for a while, please come with me." ”

The command module and the lunar module of this launch mission were completed by the Hangke Group, so this involves a very important issue, that is, the compatibility of the lunar module and the command module with the Xiangrui aerospace aircraft.

Whether the equipment can be successfully removed from the capsule, whether it can be successfully recovered after exiting the capsule, and whether there will be interference between spacecraft during the lunar mission must be studied and discussed by professionals. If you don't solve this problem, it will be embarrassing to wait until you throw things down on the moon and find that you can't get them back.

Following Lu Zhou's footsteps, the group soon saw the behemoth parked in the hangar.

The experts from the Air Force Equipment Research Institute had the same expression at first, and after seeing the real guy, almost all of them had deep surprise and shock on their faces.

Especially the five rugged electric propulsion vents.

On the shiny metal shell and spiral texture, almost all aerospace and aviation researchers have their lifelong dreams......

was stunned for about six or seven seconds, and after coming back to his senses, Sun Chengping sighed with emotion.

"This is the Xiangrui?"

Lu Zhou smiled and said, "The first time I saw it? ”

"That's not true," Mr. Sun shook his head and said in a rather emotional tone, "I've seen it twice on TV." It's just that no matter how long I watched it through the screen, I didn't see it so shocking with my own eyes. ”

Lu Zhou smiled and said, "Do you want to go up and sit down?" I promise more excitement. ”

Sun Chengping coughed dryly and said, "This ...... I still don't have to, I'm a bit afraid of heights. ”

At the same time, next to the Xiangrui, experts from the Hangke Group have begun to communicate with the technicians from the Jinling Institute for Advanced Study.

“…… What is the approximate carrying capacity of your earth-moon transfer orbit? ”

Hou Guang: "Theoretically, it can reach a maximum of 25 tons. ”

"25 tons?" After thinking for a moment, the expert from Hangke Group continued to ask, "Then which scheme do you think is more appropriate?" ”

Hou Guang: "At present, it seems that the most reliable is still the collection of lunar orbits. Our suggestion is to integrate the command module into the Xiangrui module and only drop the lunar module to the lunar surface after entering lunar orbit, so as to avoid the possible risks in the recovery process of the command module. ”

There are four main methods of landing on the moon, direct take-off, Earth orbit set, lunar surface set, and lunar orbit set. From the perspective of safety factor, it is 1>4>2>3. From the perspective of rocket performance requirements, it is 2>4>3>1.

In fact, historically, the Apollo spacecraft chose Option 4, the lunar orbit ensemble method. First, a spacecraft will be launched to fly to the lunar orbit as a whole, and part of it (the lunar module) will be lowered to the moon, and part of it (the command module) will remain in orbit. After the mission to the moon, the part that landed returned to lunar orbit and returned to Earth after being combined.

After listening to Hou Guang's words, the engineer touched his chin and nodded.

"Integrate the command module into the ship? Very interesting idea, we'll consider it on our side......"

Looking at the engineers standing next to the Xiangrui exchanging opinions, Sun Chengping said with emotion.

"I didn't expect that in my lifetime, I could see the footprints of our Chinese people imprinted on the nine heavens of the first moon."

Lu Zhou said with a smile: "The first moon above the nine heavens is just the beginning, and we will go farther in the future." ”

His gaze shifted from the aerospace plane to Lu Zhou, and Sun Chengping said in a somewhat confused tone.

"May I ask a question?"

Lu Zhou: "What's the problem?" ”

Sun Chengping: "Actually, I've always been curious, you have always insisted that you are a mathematician, but your contributions in other fields have far surpassed your achievements in the field of mathematics. ”

Lu Zhou smiled and asked, "Do you think that's the case?" ”

Sun Chengping: "Isn't it? ”

Lu Zhou thought for a while and said: "Whether it is controlled fusion or aerospace, these super projects will be solved sooner or later with the development of society, and all people need is a lot of resources and time to try and make mistakes." However, there is a fundamental difference in mathematical problems, there is no essential difference between a hundred years and two hundred years, and even if a mathematical tool has been perfected, those questions will never be answered if no one climbs the Everest of the human mind. ”

Sun Chengping smiled and said, "Then I feel even more strange." ”

"What's weird?"

Sun Chengping: "If you think mathematics is so important, why are you interested in aerospace?" ”

Lu Zhou: "Are you curious about my motivation for researching this thing?" ”

Sun Chengping nodded.

"Sort of."

Lu Zhou smiled and replied in a relaxed tone.

"It doesn't matter at all."

"The important thing is that it's there, waiting for me to figure it out."