Galactic Tech Empire

Chapter 253 Cooperation
In fact, the reason why Yinhe Technology wants to develop high-thrust rocket engines is not for spacecraft.

The projection spacecraft of the mass projector does not need a high-thrust rocket engine, because the projection spacecraft can directly enter the low-earth orbit of more than 150 kilometers by virtue of the mass projection system.

In this way, the hydrogen-oxygen engine with high specific impulse is more suitable for projecting spacecraft.

Boom... hiss...

[Specific impulse: 471 seconds]
Looking at the numbers on the instrument, Huang Haojie is quite satisfied. The specific impulse can reach 471 seconds on the ground, which means that the vacuum specific impulse may be around 500 seconds.

Similarly, the thrust of 547 tons is not small.

As we all know, as an aerospace powerhouse, the F-1 rocket engine manufactured by their Rocketdyne company (five F5s were used on the Saturn V) has an average sea level thrust of about 1 tons, which is the largest thrust in the world. single-chamber liquid rocket engine.

However, as a liquid rocket engine, the F-1 rocket engine is slightly inferior to Maoxiong's RD-170 engine.

Moreover, during the launch of the Atlas-5 carrier rocket, Milijia still needs to use Maoxiong's RD-180 engine to provide power output.

From this point of view, Maoxiong's rocket engine technology does have a leading edge.

The RD-180 engine is actually a model of the RD-170 series engine. There are multiple versions of the RD-170 series engine, and the thrust range is between 190 tons and 1000 tons.

The vacuum thrust of the RD-180 engine is 423.4 tons. The diameter of this stage engine is about 3.15 meters, the length is 3.56 meters, and the weight is more than 5.0 tons.

Pratt & Whitney and the Power Machinery Research and Production Consortium jointly developed the RD-180 engine, but the production of the RD-180 engine was all completed in Maoxiong's country, so Milijia needed to import the engine from Maoxiong.

Milijia's Atlas-5 launch vehicle uses the RD-180 engine as the first section of the power engine, and the second section of the power engine is a Centaur rocket.

The Atlas-5 carrier rocket has a length of 58.3 meters and a diameter of 3.81 meters. Its weight is close to 550 tons, and its payload can reach several tons. It can be used to launch various satellite detectors, and there will be further upgrades in the future. room.

In 1997, the two parties signed an agreement that the Power Machinery Research and Production Consortium would provide Milijia with 101 RD-180 rocket engines, and the supply work would continue until 2018 as planned at that time.

In fact, Milijia does not intend to continue to use Maoxiong's RD-180 engine, and even hopes to get rid of its dependence on the RD-2019 engine in 180.

However, since Milijia's own replacement model has not yet been put into use, the target time node for getting rid of dependence has to be postponed to 2022.

And Maoxiong's power machinery research and production association continues to deliver RD-180 engines to Milijia.

In fact, Maoxiong has another rocket engine model that is also exported to Milijia, namely the RD-181 engine.

Therefore, the relationship between Maoxiong and Mi Li's family is really being cut and messed up.

Compare the specific impulse and thrust of the three engines.

Galaxy Technology has a specific impulse of 471 seconds and a thrust of 547 tons.

Milijia's F1 has a specific impulse of 264 seconds and a thrust of 691 tons.

Maoxiong's RD-180 has a specific impulse of 337 seconds and a thrust of 423 tons.

The Maoxiong's RD-173 has a specific impulse of 337 and a thrust of 847 tons.

From the perspective of specific impulse, Yinhe Technology's hydrogen-oxygen engine is the first, Maoxiong's RD sequence is second, and Mili's F1 is third.

In terms of thrust, Maoxiong's RD-173 is the first, Milijia's F1 is second, Yinhe Technology's hydrogen-oxygen engine is third, and Maoxiong's RD-180 is fourth.

As for the rocket engine that Milijia and Maoxiong are still developing, and the rocket engine that Dongtang claims to have a thrust of 500 tons, these have not been put into use.

"Tongxing, if you use this rocket engine, how far can you launch 1 ton of objects, I mean in Blue Star." Huang Haojie asked.

When Qin Tongxing heard this, he immediately knew what Huang Haojie was up to. He clicked on the holographic projection and quickly calculated.

With the cooperation of Cloud Supercomputing, a rough result came out.

"If high-density submetallic oxygen and submetallic hydrogen are used as propellants, the entire rocket system is about 85 tons, and can launch about 1 ton of material to a distance of 1.6 to 1.7 kilometers."

"What is the speed of each stage?" Huang Haojie then asked.

"In the stage of launching into the atmosphere, it is about 2 kilometers per second; in the stage of low-Earth orbit, it is about 6 kilometers per second; in the stage of re-entering the atmosphere, it is about 7 kilometers per second." Qin Tongxing said the data.

"The overall weight of the rocket is 85 tons, the payload is 1 ton, and the range is 1.6 to 1.7 kilometers. The speed of the first section is 2 kilometers per second, the speed of the middle section is 6 kilometers per second, and the speed of the tail section is 7 kilometers per second." Huang Haojie said while sharing the data Record it.

The manufacture of this thing is definitely a huge deterrent. The 1-ton payload, loaded with mushrooms, is a proper strategic second step.

However, Yinhe Technology does not have mushroom eggs, and this thing can only be used by Dongtang.

After Huang Haojie packed the relevant materials, he left the hydrogen-oxygen engine research institute directly.

……

"Mr. Huang, you are safe and sound." Fang Dongliang greeted respectfully.

After all, Huang Haojie's current status is different from the past today, and he is a proper level of big gangster leader, not to mention he is half of his own, so Fang Dongliang can't help but be cautious.

"sit down!"

"Thank you Mr. Huang!"

Fang Dongliang sat on the sofa, and after the secretary poured Pu'er tea for the two of them, he quietly left the living room.

"I'm looking for the housing team to come here today, mainly for a cooperation project. You take this back to the higher-ups and let them see if there is any interest in cooperation."

Huang Junjie handed Fang Dongliang a special storage device.

As for the content, Huang Haojie didn't tell Fang Dongliang. After all, this thing is quite sensitive, and if there is one less person who knows about it, it should be as few as possible.

Seeing Huang Haojie solemnly handing over the storage to him, Fang Dongliang solemnly took it over without asking any questions.

After drinking a cup of tea, Fang Dongliang left quickly.

……

The next night.

It was still the same living room, and it was still Huang Haojie and Fang Dongliang.

"This is the letter from above."

Huang Haojie took it and opened the envelope, and there were only two simple words "agree" inside.

"Where's the memory?"

Fang Dongliang quickly handed him the memory card.

For the above choice, Huang Haojie did not expect it. This is a win-win situation, and the above has no reason to refuse this cooperation.

Don't look at Yinhe Technology's hydrogen-oxygen engine using hydrogen and oxygen as propellant, but in fact Yinhe Technology's technology is more like a solid rocket motor.

Mainly high-density submetallic oxygen and submetallic hydrogen have brought about the reduction of fuel and oxidant storage tanks.

Compared with liquid hydrogen, the submetallic hydrogen tank is only about one-seventh of the liquid hydrogen tank; while the submetallic oxygen tank is about three-fifths of the liquid oxygen tank.

In addition, it does not need to withstand high pressure and maintain low temperature, and can be stored at normal temperature and pressure for a long time.

This reduces the engineering difficulty of the rocket. I don’t know how much, the impact of the difficulty reduction is the cost reduction.

As long as you are not blind, no one will refuse to cooperate.

And Huang Haojie's conditions are not too much, let the space agency transfer part of the secondary kicker technology to Yinhe Technology.

Huang Haojie inserted the memory into the computer, and asked Zhong Zhong to check it secretly to make sure there was no problem.

"There is no problem with the item, I accept it."

"Then I won't disturb Mr. Huang's rest."

Fang Dongliang left the villa after completing the task.

(End of this chapter)