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

Chang'an.

On the test bench of the Sixth Aerospace Academy, the YF135-two-way swing reusable prototype is undergoing a 1,500-second long test run and ignition test.

The engine with a flow rate of 110% outputs more than 400 tons of thrust and consumes more than 2 tons of fuel every second. The movement of an engine shakes the earth.

Under such circumstances, the hydraulic rocking mechanism continues to deflect under the action of the control signal, testing the performance of the engine in various steering ranges.

“This is the new generation of super-thrust liquid oxygen kerosene rocket engine we are developing. Its maximum thrust at sea level exceeds 4,000 kilonewtons, which is tied with the K380 engine.

However, compared with the K380, the YF135 has made a certain degree of improvement in volume structure and simplified the production process. It is also the kerosene rocket engine with the largest thrust in a single combustion chamber in the world. "

Tang Weitian's introduction and the spectacular test drive scene gave a group of foreigners of different skin colors different expressions.

Lucia's experts were discussing the technical gap between YF135 and RD181. The designers and engineers looked solemnly thinking about the terrifying power of the YF135 core turbine pump. As for the representatives of the other eight small countries, they could only show expressions of admiration.

"YF135 is just the beginning. Based on it, we will transform a liquid oxygen methane engine. The thrust of a single combustion chamber will reach more than 300 tons, and it may support a maximum thrust of 450 tons, making it the most powerful liquid engine in the world. .

This is also a reusable engine. In the future, all our liquid rocket engines will be reusable, which will reduce the unit price per kilogram of launch vehicles by more than 25% on the current basis. "

Representatives from 11 countries applauded one after another. Regardless of whether they understood it or not, China Aerospace is very powerful now.

It is now June 28. Delegations from 11 countries that have manned space cooperation with the space agency, including the four ASEAN countries, the four West Asian countries, and the three countries of Luxembourg, Italy, and China, gathered in Chang'an to visit the engine production base here.

There are not only engines here, but the Sixth Institute, which has made leaps in technology, has also planned quite a lot of huge plans, which amazed all the representatives. They saw surprises everywhere throughout the day, and they also deeply felt the powerful power of the land under their feet. Aerospace power.

In the evening, they were sent to the local airport, where a C919 was on standby. It would take the representatives to WN City first, and then transfer to Huayin City, where they would enjoy a few days of sightseeing and prepare to participate in the A multi-national space cooperation and space development and asteroid defense planning meeting was held there, and a common treaty was signed.

Huayin City is an important birthplace of Yangshao culture. It has a history of more than 2,300 years, with towns established in the Spring and Autumn Period and counties established in the Warring States Period.

The most famous one in its territory is Mount Huashan, one of the five mountains. It has unique scenery and a long history. It is the best meeting place after evaluation.

The meeting schedule is expected to be from July 1st to July 20th: at the beginning, Dawn 3 will fly to the moon, and at the end, the astronauts will return home, which is perfect.

The purpose of the meeting is to provide a clear framework and task allocation for future space cooperation among multiple countries, and to jointly undertake space asteroid defense needs.

According to the general convention of naming the meeting place, the final treaty should be called the "Huayin Multinational Space Friendly Cooperation and Space Mutual Defense Agreement", the English abbreviation HAFO.

…

Kennedy Space Center, Florida.

It will be 4:44 a.m. Central Time on June 28, Aramco time, and 17:44 Beijing time on June 28.

There are still 65 hours and 16 minutes left until the launch of Long March 10.

From the moment the SLS arrived at Cape Calaveral from the sea, the lights here have never been extinguished, and a steady stream of engineers rushed from the major factories of Lockheed Martin and Boeing to become the launchers surrounding the SLS rocket. Some of the many heads on stage.

After tireless efforts, the inspection of the SLS rocket's overall electrical system and various connections has been completed.

Although it was extremely hasty, all inspection items were completed one after another. Only some equipment defects and single-digit electrical system installation errors were discovered, and all have now been corrected.

Intense white light shone on the SLS rocket body, and the light reflected from the smooth outer surface of the SRB finally gave Claire Borden the opportunity to rub her sore eyes.

Engineers wearing white hats kept passing by him. They walked in a hurry and rarely stayed in one place. From the beginning of the noise, now there is only the sound of machinery and pen and paper.

Even if the work is rotated, the average rest time here is difficult to exceed four hours. The launch center has bought out the coffee from all the surrounding beverage shops. Every once in a while, a forklift will take down the boxes of coffee delivered by the truck and put them aside. Then it was taken out in less than an hour.

Deputy Chief Jim Free picked up a cup from the thermos, opened the lid and drank it in one gulp, then crushed the empty cup and threw it aside, becoming part of the pile of waste paper cups.

The warm coffee made him feel better again. He looked through the test catalog he had just read and found an error. He hurried to the station where the problem occurred.

Claire lay on the railing more than 60 meters above the ground and calmly looked at the engineers who were gathering around the sugar like ants, and a number emerged in her mind: 30.

If no defects are found during the re-inspection after two hours, the rocket can be refueled and ready for launch.

Taking into account the most basic redundancy adjustment time, launch requirements should be met after 40 hours.

That is, at 9:44 Beijing time on June 30 and 20:44 pm Aramco time, it is 55 hours earlier than the public launch time of Long March 10. But from the perspective of the people in Aramco, it is definitely higher than the Long March 10 launch time. The number is one day ahead of schedule.

Without any accidents and everything going smoothly, leading by almost a day is already the best result.

The Presidential Palace calls every three hours to check on the progress, and now we can finally deliver.

Of the entire crew involved in Artemis 2, there were probably only four astronauts who were required to take forced rest, and now even though Claire was sleepy, she had no interest in sleeping at all.

Later, he will have to remotely command the docking of the "Blue Moon" lander and the on-orbit refueling module. According to Houston's report, the former has just entered a 400-kilometer orbit around the moon and will be docked and refueled before maneuvering to the "Gateway" space station. Docking and waiting for the arrival of the astronauts.

Of course, he also knew that there should be two spacecrafts in the lunar orbit at this time that were also preparing for docking. They were the two parts of the "Black Rabbit". One of the compartments had a strange purpose. It was said to be a fuel storage and refueling compartment. , but since it was launched with the Xinyuan-2 rocket, the mass should be about 20 tons.

However, the volume of that cabin is not much smaller than the 50-ton manned living cabin, and the empty weight must be at least 12 or 3 tons. Is it useful to send such a small amount of fuel?

Could it be that we plan to transport fuel there later? But it wasn't cost-effective, and he really couldn't think of the need to do so, and couldn't find any reason at all.

Since the launch of the Dawn Project, China Aerospace has become increasingly strange.