Before the launch, Lin Ju solicited opinions internally and decided on the painting of the first rocket.

In the end, the top three colors were tried: silver, white, and dark blue.

Silver was the first to be ruled out.

THE REASON IS UNKNOWN, BUT IT IS SAID THAT THE BOSS PERSONALLY PASSED IT.

When Lin Ju saw the silver painting imagination, he immediately felt a little bad, if he didn't look at the upper level, this was a starship!

The diameter is about the same, the height is about the same, and the thrust is still more than 7,000 tons, which is the last thing I saw in my last life!

Although being a man cannot be feudal and superstitious, in order to avoid sailing to another world, Lin Ju still uses the most conservative and traditional white paint.

The white color looks bigger, which makes Xinyuan 3 even taller and straighter.

At 10:55 a.m., the countdown is 5 minutes.

Next to Xiao Okada stood Zhang Chuanyong, who did not have a VIP seat at the launch center, but chose to find a good spot on the beach.

Zhang Chuanyong swept over the dense crowd on the beach with a red face, and couldn't help but say:

"If we were still in the island country, I am afraid that we would never see so many people who are so enthusiastic about rocket launches in our lifetime!"

Xiao Okada: "It's not that people are not enthusiastic about rocket launches, it's that JAXA doesn't have the ability to build giant rockets, maybe they're right, small countries are doomed to be devoid of giants." ”

Zhang Chuanyong: "However, the Yamato, which was launched 76 years ago, is still the largest giant ship built by Asians, and the largest battleship in the world. ”

Xiao Okada: "The Yamato was already behind when it was born, and Xinyuan 3 is still the pinnacle of science and technology in this world, and there is no such huge rocket for rice animals!" ”

Zhang Chuanyong: "Fortunately, we are Chinese, and we should be proud of it." ”

Xiao Okada: "Asians should be proud of it. ”

The final countdown interrupted their discussion, and hundreds of thousands of people on the beach shouted along with the sound filling the sky.

The firing center gave the firing command, and 19 engines began to ignite in turn.

At the same time, the launch pad sprays water towards the bottom of the rocket, and the amount of water sprayed in just a dozen seconds will reach 700 tons, they will take away the heat, and the imitation launch pad will burn out.

Three turns, respectively 12, 6, 1 engine, from the outside to the inside, are two diagonal ignited together, after determining the working state of the program to carry out the later ignition.

19 engines, a total of 10 ignitions, which consumed tens of seconds.

On the beach in the distance, Zhang Chuanyong and Xiao Okada only saw that after the countdown was zero, a large cloud of smoke came out of the diversion groove under the rocket, and quickly spread before it took off, enveloping the entire area of the station, almost covering the nearby 1 kilometer of woods.

If it's the first time you see it, you'll think that there was an explosion at a chemical plant somewhere, so much so that it takes over all the visible areas like a mushroom cloud.

However, with the gradual increase of thrust, the 19 engines burst out with a maximum thrust of about 7,600 tons, and the strong air flow instantly spread wildly around after leaving the launch pad, scattering the gray smoke and dust, revealing the white arrow body in the middle.

At this time, the sun had already risen, but there seemed to be another sun on the ground that was igniting and expanding, and the brightness was even more dazzling than the sun in the sky for a moment, and people could clearly see the semicircular halo of the tail flame spreading like ripples in the water.

Lin Ju had a strong feeling that if Xinyuan-3 chose to launch at night, it would definitely be able to illuminate the entire sky like the sun, the kind of daylight intensity.

Unlike Xinyuan 2, the tail flame of Xinyuan 3, which uses kerosene as fuel, is bright orange, and the long tail flame looks very clear and has a great visual effect.

Originally, K380 belonged to a high-thrust rocket engine, and the tail flame was very coarse, which was obvious on the Xinyuan 5 series, but the tail flame of 19 K380 gathered together and actually became thinner in front of the 11-meter rocket body.

The tail flames of the 19 engines converge into an elongated cone, but the length of the arrow body is still not 147 meters, revealing the oppressive force of the world's first rocket.

On the beach, in the launch center, and even far away in the city, people can feel the high-frequency vibration through the ground, which is the roar of more than 7,000 tons of thrust.

The 19 K380 liquid oxygen kerosene engines, each capable of consuming 1,130 kilograms of fuel per second, are 21.5 tons of fuel poured out every second when all are turned on.

Each engine has a whopping 24.6MW, and the total power of the 19 engines reaches a staggering 468MW, which is nearly three times that of the Saturn V!

Xiao Okada only felt goosebumps rise all over his body, a tingling sensation surged from his spine to his brain, and he felt that his heart was also pulled out by Xinyuan No. 3 and flew upward.

Before Xinyuan-3 was completely away from the launch pad, the impact of the engine made him even think that an earthquake was about to occur.

As an islander who grew up in an earthquake zone, he had no doubt about how horrific the impact on the ground was.

But even when the rocket lifted off, the surroundings still crackled and trembled like a constant explosion, and the ears only had time to feel the rumble for two or three seconds before they were filled with tinnitus.

Xinyuan-3 is rising like the sun!

He couldn't breathe, and the pressure on his chest was as great as the combustion chamber.

"奇跡です,奇跡です!"

He kept repeating the Japanese in his heart, but blurted out the words: "Long live Huaguo!" ”

Zhang Chuanyong was stunned for a moment, and then shouted.

In the crowd, there were two naturalized engineers who were constantly chanting for Hua Guo.

……

Ma Yilong stared closely at the footage of the tracking camera, and at this time, in the perspective of the ground, he saw 19 extremely bright orange spots burning hotly.

It's like 19 suns, these engines are really as stable as the sun, and Ma Yilong can't see the slightest surprise.

The launch center, the space agency bosses are also nervous, for fear of repeating the tragedy of N1 half a century ago.

The main reason is that the Long March 9, which they have already set, also uses 29 YF135 liquid oxygen kerosene engines, which are the same as the B4 boosters in the starship PPT drawn by Lao Ma.

All of them are 11-meter configurations, and they are all connected in parallel, and the Long March 9 is undoubtedly an extremely bold attempt, and it would be great if Xinyuan 3 tried the water.

Now, 60 seconds have passed, all 19 engines are working properly, and after half a century, Resonance has not destroyed Xinyuan-3 as much as it did N1, which is in as stable as it would have been.

"Level 1 separation!"

The difference from all the previous test rockets is that the upper stage of Xinyuan-3 is not all counterweight, the third stage rocket is, but the second stage rocket is actually equipped with four H240 engines, which can provide a total of 1120 tons of thrust in a vacuum, which will push the counterweight to the height of the orbit, and then turn around and burn up into the atmosphere.

At this time, with the addition of fuel, the detached first-stage engine still has more than 200 tons of mass, and it will rely on multiple engines in the middle and outermost rings to perform joint braking and decelerate together.

The diameter of 11 meters is too large, an engine swings and decelerates too much, in order to strengthen stability, 6 of the 12 in the outermost ring when recycling, 3 in the middle, and the most core 1 can be ignited and braked, only the outer two circles of the swing angle is relatively small, mainly relying on the middle one.

The 77-meter-long rocket body is also very challenging, and in order to avoid too much lateral load on the long rocket body, Xinyuan-3 will fire intermittently at the beginning of the landing to maintain an upright attitude of the rocket body.

This will cost a little more fuel and increase the recovery time, but it will best ensure the strength of the arrow.

Lin Ju fully believed in the manufacturing capabilities of the engineers and the B-level base of the system, and at this time he had already put his mind at ease and talked to Guo Shen.

Lin Ju: "Recycle the second-stage rocket of Xinyuan No. 3, what about the four H240s, these four engines are more than 100 million, too expensive, I can't bear it." ”

Guo Shen: ......

Although the cost of the previous rocket second stage is not low because most of them also use hydrogen-oxygen engines, there is only one H240 at most, and the price of one closed expansion cycle high-thrust hydrogen-oxygen engine improved by Xinyuan is as high as more than 20 million, which is more expensive than K380.

The second stage of Xinyuan No. 3 is really a luxury, and 16 launch missions this year are equivalent to throwing away at least 64 H240s, which is more than a billion thrown out, and Lin Ju feels that he can't stand it.

Moreover, the hydrogen-oxygen engine burns very cleanly, and the reuse ability is very good, and Lin Ju regrets that he was too angry before.

Guo Shen thought about it, because it was to work in a vacuum, the diameter of the nozzle of the H240 (vacuum version) was very large to obtain high efficiency, and it was very reluctant to plug five units, and even if it was stuffed in, it was not easy to swing.

With four engines together, braking recovery requires redevelopment of the control system, not to mention, the swing angle is not large, and it is difficult to control the direction.

(End of chapter)