Changan.

On the test bench of the Sixth Academy of Aerospace, the YF135-two-way swing reusable prototype is undergoing a 1500-second long test 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 per second.

In this case, the hydraulic rocking mechanism is constantly deflecting under the action of the control signal, testing the performance of the engine in various steering ranges.

"This is the new generation of ultra-high-thrust liquid oxygen kerosene rocket engine we are developing, which has a maximum thrust of more than 4,000 kN at sea level, which is tied with the K380 engine.

However, compared with the K380, the YF135 has been improved to a certain extent in terms of volume structure and simplified the production process, and it is also the world's largest kerosene rocket engine with single combustion chamber thrust. ”

Tang Weitian's introduction and the spectacular test scene made a group of foreigners of different colors have different expressions.

Lucia's experts were discussing the technical gap between the YF135 and the RD181, and the haired and Italian personnel were thinking solemnly about the terrifying power of the YF135 core turbo pump, while the other eight representatives of small countries could only show an expression of admiration.

"The YF135 is just the beginning, based on which we will modify a liquid oxygen methane engine, with a single combustion chamber thrust of more than 300 tons, and may support a maximum of 450 tons of thrust, becoming the most powerful liquid engine in the world.

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

Representatives of 11 countries applauded one after another, whether they could understand it or not, anyway, the current Huaguo aerospace is very powerful.

It is now June 28, and 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 Lu, Italy and Hair, gathered in Chang'an to visit the engine production base here.

There are not only engines here, but also a lot of huge plans planned by the Sixth Academy, which has made a leap in technology, which amazed the delegates, and they saw surprises everywhere throughout the day, and also deeply felt the powerful aerospace power of the land under their feet.

In the evening, they were taken to the local airport, where a C919 was on standby, and it would take the delegates to the city of WN and then transfer to the city of Huayin, where they would spend a few days exploring the mountains and rivers and preparing to participate in the multinational space cooperation and space development and asteroid defense planning meetings held there to sign a mutual treaty.

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

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

The conference is scheduled to run from July 1 to July 20: Dawning 3 will start with a flight to the moon and end with the astronauts going home, which is perfect.

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

According to the convention of naming the venue of the conference, the final treaty should be called the "Sino-Yin Multinational Space Friendship and Cooperation and Space Common Defense Agreement", abbreviated as HAFO in English.

……

Kennedy Space Center, Florida.

Aramco June 28 at 4:44 a.m. Central Time, June 28 at 5:44 p.m. Beijing time.

There is still 65 hours and 16 minutes before the launch of the Long March 10.

From the moment the SLS arrived at Cape Calaverar by sea, the lights never went out, and a steady stream of engineers arrived from the major factories of Lockheed Martin and Boeing to be part of the crowd on the launch pad that surrounded the SLS rocket.

After tireless efforts, the overall electrical system of the SLS rocket and the inspection of individual connectors have been completed.

Although it was extremely hasty, all the inspection items were still completed one by one, and only some equipment defects and single-digit electrical system installation errors were found, which have now been corrected.

Intense white light shone on the SLS's arrows, and the light reflected off the smooth outer surface of the SRB gave Claire Borden a chance to rub her sore eyes.

Engineers in white hats kept passing him, they walked in a hurry, rarely stopping somewhere, from the initial noise to the sound of machinery and pen and paper.

Even with rotational work, the average break here is hardly more than four hours, and the launch center is empty of coffee from all the surrounding beverage shops, and every once in a while, a forklift truck takes off boxes of coffee from trucks and puts them aside, only to be taken out in less than an hour.

Deputy Commissioner Jim Freey picks up a cup from the incubator, lifts the lid and drinks it down, then flattens the empty cup and tosses it aside to become part of a pile of waste paper cups.

The warm coffee made his spirits feel better, and he went through the test catalog he had just read again, and sure enough, he found a mistake and omission, and hurriedly ran to the station where the problem occurred.

Claire lay on the railing more than 60 meters in the air and calmly looked at the engineer who gathered near the sugar like ants, and a number came to her mind: 30.

If no defects are found in the review after two hours, the rocket can be refueled and ready for launch.

Considering the minimum redundancy adjustment time, the launch requirements should be sufficient after 40 hours.

That is, at 9:44 a.m. Beijing time on June 30 and 20:44 p.m. Aramco time, 55 hours earlier than the public launch time of Long March 10, but from the perspective of the Aramco people, it must be one day earlier than Long March 10.

With nothing unexpected and everything going well, leading for almost a day, that's already the best result.

Every three hours, the presidential palace has to call to ask about the progress, and now it is finally possible.

Of the entire crew involved in Artemis II, only four astronauts were forced to rest, and now Claire is not in the mood to sleep at all, even if she is sleepy.

According to the Houston report, the former has just entered the 400-kilometer orbit around the moon, and will first dock and refuel before maneuvering to the "Gateway" space station to dock and wait for the arrival of astronauts.

Of course, he also knew that there should be two spacecraft in the lunar orbit at this time who were also preparing to dock, which were the two parts of the "Black Rabbit", and one of the modules had a strange purpose, saying that it was a fuel storage and refueling module, but since it was launched with a Xinyuan-2 rocket, the mass should be about 20 tons.

However, the volume of that module is not much smaller than that of a 50-ton manned living module, and the empty weight is at least twelve or thirteen tons.

Could it be that you are going to transport fuel later? But it wasn't a good deal, and he couldn't think of the need to do so, and he couldn't find a reason to do so.

Since the launch of the Dawning Project, Huaguo Aerospace has become more and more strange.

(End of chapter)