Technological power starts with upgrading lenses.

Chapter 439 Oxygen-Hydrogen Engine

The efficiency of Excellence is quite high.
Early the next morning, he returned to Dongyang with the newly signed authorization contract and technical information. Kang Chi, who got the technical information from Blue Arrow Aerospace, immediately began to study it eagerly.

In fact, liquid oxygen and liquid hydrogen engines have always been considered mainstream rocket engines. Although China Aerospace mainly focuses on liquid oxygen and kerosene, it also has research on liquid oxygen and liquid hydrogen.
But they are a national team after all. Not only is the technology transfer process not as direct and efficient as that of private enterprises, but they also have to owe favors to others, and if they are not careful, they may even be criticized. So Kang Chi decided to spend a little money and go around to buy the technology of liquid oxygen-methane engines to learn more about it...

……

Since both the teams of Academician Fu and Yan Hui are currently in the stage of technical design and development, the Pangu base has been able to enjoy a rare period of leisure.
However, after Kang Chi digested the technology of the Tianque 12 engine and redesigned a rocket engine that used liquid oxygen and liquid hydrogen as fuel according to his own needs, the manufacturing equipment at the Pangu base soon became busy.

Of course, in addition to the Pangu Base, Datang Heavy Industry and its huge supply chain also joined in the manufacturing of the prototype of this engine. However, they only got the parts drawings and didn't even know what these parts were for...

[Item: Medium-sized liquid oxygen and liquid hydrogen engine]

[Manufacturer: Kangchi]

[Item Level: 1]

[Experience: 0/50000]

[Item status: intact]

[Item parameters: Sea level thrust 152.8 tons, specific impulse 323 seconds, total mass 1.2 tons, thrust adjustment range 80%-100%, operating life 50 minutes]

[Analysis items: no analysis items]

[General experience: 12433435]

[Mastery Points: 107 (+45)]

After seeing the system pop-up panel, Kang Chi breathed a sigh of relief, but after carefully looking at the parameters on the panel, he couldn't help but frowning.

This engine with a diameter of 1 meter and a height of 2 meters was named "Tongtian No. " by Kangchi. It looks quite simple in appearance, with no protective material or paint sprayed on the outer shell, and the sparse welding points are clearly visible.

Although it looks ugly, the fact that the system panel can pop up shows that the engine can at least ignite and run smoothly. However, judging from the parameters, it obviously has considerable problems.

The sea level thrust is 7.2 tons less than Kang Chi expected.
The specific impulse of 323 seconds is also far lower than the perfect theoretical specific impulse of 463.1 for liquid oxygen and liquid hydrogen...

This means that for every ton of fuel consumed, this engine can only produce 1 Newton of thrust for 1 seconds. If a rocket is built using an engine with this performance, the effective load will be very low.

If we compare them with the world's most advanced rocket engine, the Raptor 3, the performance of the two engines are completely not on the same level.

The specific impulse of the Raptor 3 is 350 seconds, which doesn't seem much higher, but the problem is that the Raptor 3 is a liquid oxygen-methane engine, and the perfect theoretical specific impulse of liquid oxygen-methane is 379.

In other words, Raptor 3 has almost reached the theoretical limit of liquid oxygen-methane engine combustion efficiency.

More importantly, the thing made by Kang Chi has a service life of only 50 minutes...

If we calculate that one flight takes 30 minutes, then after just one launch, this thing will be half-dead even if it is recovered.

Kang Chi pondered for a long time, and his intuition told him that it was probably because the technical changes made to the fuel type were not thorough enough, but he couldn't figure out what went wrong.

But he never made things difficult for himself when he couldn't figure it out.

Anyway, this engine is just an upgraded prototype. With the system in hand, any problem can be solved after the upgrade. We will naturally know what the specific problem is after analysis.

upgrade!

General experience-50000,

General experience-150000,

General experience-450000,

General experience -1350000. "This type of engine has been upgraded to the maximum level."

With the investment of two million general experience points, the engine flashed four times and then reached the maximum level.

Fortunately, during this period Kang Chi visited Datang Heavy Industry to inspect the status of the company's equipment, otherwise even one engine would not be able to be started.

After the system upgrade, not only the outer shell of Tongtian No. 1 has become very simple and beautiful, but the various pipes inside are also neat and orderly. The unique mechanical beauty will definitely satisfy people with obsessive-compulsive disorder, while the size has basically not changed.

[Item: Oxygen-Hydrogen Ultra-Low Temperature Engine]

[Manufacturer: Kangchi]

[Item Level: 5 (Maximum Level)]

[Item status: intact]

[Item parameters: 350 tons of thrust at sea level, 460 seconds of specific impulse, 0.95 tons of total mass, 10%-100% thrust adjustment range, 2000 hours of operating life]

[Analysis item: parsable]

[General experience: 10433435]

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[Mastery Points: 107]

Good guy,
It is indeed an engine that has been upgraded to the maximum level!
Looking at the engine parameters on the system panel, Kang Chi's eyes widened in shock.

It is hard to imagine that such an engine with a diameter of only one meter and a total mass of less than one ton can actually generate a thrust of 350 tons!

Although the diameter of Tongtian-3 is 0.3m smaller than that of Raptor 70, it has tons more thrust!

It’s like a fortress!

Of course, this actually has a lot to do with the type of fuel.
The specific impulse of liquid oxygen and liquid hydrogen is 22.16% higher than that of liquid oxygen and methane. That is to say, under the same technology and specifications, the efficiency and thrust of liquid oxygen and liquid hydrogen engines are naturally higher than those of liquid oxygen and methane.

But this is only the first parameter, the following parameters are the real heavyweights!
Tiantong-460 has a specific impulse of 10, which is almost the same as the theoretical specific impulse of liquid oxygen and liquid hydrogen. It can almost perfectly utilize every bit of fuel input into it, and in this case, it can also achieve a large range of thrust adjustment of 100%-%!

The adjustable thrust technology is actually the core key of reusable rocket technology!

With an engine whose thrust can be adjusted so flexibly, Kang Chi even wondered if the balance system of Yinhe could be slightly improved so that it could be used to recover the rockets made with this engine...

In addition, the engine has a service life of up to 2000 hours and can complete at least 4000 round trips to low-Earth orbit, which also allows Kang Chi to completely put his mind at ease.

The Sky-Strong Project is now stable!
Whether it is a car, airplane, ship or rocket, the most critical and core part is always the engine. It can be said that with this rocket engine, the progress of the Sky Project has been completed halfway before it even began.

As for the remaining half, there are actually no major technical difficulties. The difficulty mainly lies in the design and manufacturing workload, which can be solved with time and money.

In addition, Kang Chi also noticed that the name of this fifth-level engine has actually changed.

Especially that keyword: ultra-low temperature!

As we all know, the storage temperature of liquid hydrogen is minus 253 degrees Celsius and its boiling point is minus 183 degrees Celsius. Therefore, cryogenic engines usually refer to engines that use liquid oxygen and liquid hydrogen as propellants.

But why does the system call it a super low temperature engine...

Could it be that this thing is not burning liquid oxygen and liquid hydrogen, but solid oxygen and solid hydrogen with lower temperatures?
Thinking of this, Kang Chi became even more excited. After a brief study, he opened the analysis panel and prepared to conduct a technical analysis of the engine.
However, the requirement of 190 mastery points in total made him confused.

It is worthy of being the pinnacle of oxygen-hydrogen engines!
Faced with a mastery point gap of 83 points, Kang Chi had no choice but to analyze in batches.

Every time a technology is analyzed, the relevant supporting manufacturing equipment will be immediately manufactured. In the process of rubbing the equipment, proficiency points will be accumulated, so as to continue the analysis...

(End of this chapter)