However, to Tang Weitian's surprise, Lin Ju did not show pride, but looked at Xinyuan-3 on the launch tower with deep meaning and said:

"Traditional rocket engines are nothing more than oxidizer and fuel explosions to produce thrust, the structure is similar, the upper limit has long been predestined, and the future of space cannot always rely on them."

Tang Weitian immediately thought of a lot, there are aerospace aircraft, nuclear thermal engines, etc., from the starting point, these products far exceed traditional rockets.

However, his age is already destined to death on the traditional road, including in the physical sense.

"Yes, the future belongs to you young people, but I can still use my spare ten years."

Tang Weitian is not sad, a generation has a generation's mission, if the next generation of aerospace power still depends on him, it can only be said that the development of aerospace is abnormal.

Aramco, Texas.

Ma Yilong, like 2 million YouTube netizens, stared at the launch on the computer for 4 hours of live broadcast.

It's now 7 o'clock in the morning on June 24, and Ami is still in the middle of the night, but the number of viewers of the live broadcast on the Internet is not quite a small one.

This is the most powerful rocket ever built by mankind, not the CBC, and the single-core stage provides up to 7,500 tons of thrust, more than twice that of Saturn V!

The huge Xinyuan-3 was erected on the active launch pad, and the white fog raised by liquid oxygen was not so conspicuous under the sunlight, or it was set off by the huge rocket body, which looked less obvious.

How tall is Xinyuan 3? 147 meters!

In a series of comparison charts of Saturn V, SLS, Long March 9 and Xinyuan 3, Xinyuan 3 is directly taller and looks one size larger.

In order to assemble the rocket, the final assembly building was renovated two months in advance, and the final assembly operation was carried out in a semi-open air, and a higher shed was built on the roof of the building like the illegal building.

Such an exaggerated rocket erected there was even more shocking than Xinyuan No. 2 A, as if the surrounding environment had been reduced in equal proportions.

Ma Yilong counted the parameters of the rocket rolling in the live broadcast screen, and the more he looked at it, the hotter his eyes became.

The K380V full-flow liquid oxygen kerosene engine has a specific impulse of 331 seconds, a sea-level thrust of 399 tons, and a maximum nozzle diameter of only 2 meters.

With such high-performance performance, the Lucia RD180/181 series kerosene engine purchased by NACA has won the throne of the world's first kerosene engine with a thrust of 400 tons per combustion chamber.

The reliability of the K380V is also extremely high, and as the main engine of the core stage of the Xinyuan No. 5 series, it has been launched more than 20 times without any problems.

The reliability problem of the 19 engines in the first stage of the core was broken by the K380, which had been in service for a long time, and only a few people still doubted whether the impact of the centralized arrangement on the airflow channel was too serious.

This question was also asked by the moderator of the CCAV.

In the past, launching rockets was a big deal, and CCAV broadcast live on large spacecraft or manned launch missions, but there were too many in the past two years, so that the host had some basic knowledge of rockets.

For the launch of the Xinyuan-3 rocket, it is still the TV station, the space agency, and the Xinyuan company in the studio.

Compere:

“…… We see that the Xinyuan-3 giant rocket adopts the design of 19 engines in the first stage of the core in order to be recyclable, so Academician Zhao, can you tell us the difficulty of this design? ”

Academician Zhao: "The core stage is connected in parallel, we take the N1 rocket engine as an example, the first is in the control system, so that the 19 engines have a stable output thrust in all directions, and the second is in the reliability of the engine, we all know that there are more of them, then the probability of one of them will become larger, in case of an accident that cannot be used, it is likely to fail to launch." ”

The host looked at Xinyuan's engineer: "So Chief Engineer Wang, how does Xinyuan No. 3 deal with these two problems?" ”

"The engine of Xinyuan 3 is very reliable, even if there is an accident, it will at most stop and cannot be started, but Xinyuan 2 is designed to put the upper stage into orbit completely even if four engines fail, and at most it consumes more fuel than expected and may not be able to recover."

Moderator: "Can you succeed even if four engines fail?" , that's more than 1,000 tons of thrust. ”

Mr. Wang: "In the worst-case scenario, 15 engines can output thrust at 112% of the power, and still ensure about 7,200 tons of thrust. ”

Moderator: "But the position of the failed engine may be random and irregular, so that it will not cause the thrust imbalance rocket to shift?" ”

Chief Engineer Wang: "In terms of intelligent control and attitude adjustment, Xinyuan has enough confidence. ”

“……”

For the last sentence, Ma Yilong agrees.

Xin'an XC4's XW151 intelligent driving system has put a bombshell in the automotive industry, Tesla contacted Google, and the two sides have the same evaluation of XW151: this tm is a product of the future!

The gap is staggering, and in order to achieve the level of XW151 driving technology, you must either rely on frighteningly rich data learning, or develop extremely capable artificial intelligence.

They all believe that the success of XW151 comes from the former, but they can't figure out how Xinyuan collects so much data.

Tesla Lab told Lao Ma that it would reach the level of XW151 in three years, but at that time, Xin'an had long since used XW151 and was ranked to XW191!

This is the case in automobiles, and it is difficult to imagine how terrible the intelligent control system used in aerospace must be.

Not to mention anything else, the explorer robot alone is enough for a large number of robot companies to tremble, and Boston Dynamics, which was originally consciously leading in this area, swallowed its saliva when it saw it.

Is it hard to just control the attitude of some engines?

Lao Ma felt that it was not difficult, and it was promising.

He looked at his assistant:

"Scott, we have to strengthen our confidence in the starship, as long as the control system is passed, the more engines the more reliable it is."

The basic design of the first generation of starships has been formed, and like the later generations, it is a starship ship plus boosters.

Since the first-generation Raptor engine, which is expected to be commissioned and ignited next month, has a maximum thrust of only 185 tons, it is expected that 29 Raptor engines will be used to achieve 5,400 tons of thrust.

The weight of the starship spacecraft has also been reduced to 65 tons, which is 20 tons lower than the starship that sent Lin Ju to life, and the payload is 120 tons, 60 tons lower, and it is equipped with 6 Raptor vacuum engines arranged in two circles, with a thrust of about 1100 tons, and three engines are required to land together for recovery braking.

Although Lao Ma has decision-making power as the chief engineer, the design of the 33 engines in the core stage still makes the rest of the engineers afraid, although there are 27 heavy Falcon in front, but the latter is a CBC, which cannot be generalized.

Although there are only 19 engines, it can also show that the feasibility of multiple parallel connections is not low, so as to advance the starship plan as scheduled.

If Lin Ju knew that his competitors wanted him to succeed, he would probably laugh too.

(End of chapter)