Eric, who rushed to the design site, directly took a hammer and knocked off the two layers of steel plate sleeves of the combustion chamber. Then he brought a roll of copper wire and a conical tube to cover it up.

This is a typical cross-sectional heat dissipation, which increases the cross-sectional area in contact with air to further enhance the heat dissipation effect, and the copper wire-wound fuel pipe can reduce the combustion chamber temperature again.

Eric did not stop there, due to the constraints of time and materials, Eric just drew a sketch of the wall of the combustion chamber, which is a uneven, but very regular internal structure of the combustion chamber, although it is flat, but the designers immediately understood this function.

And the previous demonstration is a meaning, increasing the cross-sectional area.

After reading the simple and rough one

XCOM-BFK-3 rocket engine, Eric again went to the test site of using methane as fuel.

In his mind, the benefits of methane are too many, and there is only one carbon atom in a methane molecule, which means that methane does not crack like kerosene at high temperatures.

After all, there is only one carbon, and there is no carbon carbon chain at all.

This makes methane difficult to coke at high temperatures, with little carbon deposit, increasing the life of the turbine engine and ensuring its stability.

Eric did not intend to develop an engine that could be reused multiple times from the beginning, but it was necessary to ensure the stability of the engine and ensure the safety of the rocket.

He not only wants to send satellites into space, but also to send humans into space for future scientific progress.

Without safety, how can we talk about manned?

The coking limit temperature of kerosene engines is 833 degrees Celsius, while the ultimate temperature of methane is as high as 1223 degrees Celsius.

Leaving aside the low-sulfur kerosene of the Soviet Union, no matter how good the quality kerosene is, it will coke at 1195 degrees Celsius, and at 1306 degrees Celsius, a large number of friends will endanger the safety of the entire engine.

That's why Eric allowed the development of kerosene engines and instructed them to use only in a transitional period.

Because methane extraction is now generally difficult, and there is not much in Germany, but there is more kerosene. Considering that missiles will definitely join in future wars, Eric turned on the methane rocket engine at the same time as the kerosene rocket engine.

Another name for methane is natural gas, which is already used in many households in Germany.

Methane is a good alternative to energy, and it is also a clean energy, and renewable technology is not complicated, and Eric already has a team experimenting with power-to-gas technology, including electrolysis of water.

Due to the already scarce power supply in Germany, Eric does not intend to bother himself before the commercialization of nuclear power, but simply develops the technology for backup.

Germany now needs any resources it needs to buy from anywhere in the world, without any regard for reserves.

And when it comes to resource reserves, Eric didn't ignore them, after all, in his time, strategic reserves were something that every adult would participate in.

For him, this is all the more so, except that the strategic reserve is a floating value, which cannot be accurately estimated, and can only be estimated at the current level of consumption.

Eric's concern is not really about mineral reserves, but about food reserves. As a result of the aggressive development of manufacturing and industrial orders, they were 32 percent higher than in 1914. Investment increased by 450% and production value increased by 140%.

The area of agricultural arable land fell from 900 million mu to less than 700 million mu after the integration of the vast arable country.

There are also some reasons why the purchase of imported low-cost grain has hit the domestic market, but Eric never hopes to import, everything has to be self-sufficient, and there is a surplus of grain stocks, and it is best to export another batch to earn foreign exchange.

Therefore, the Ministry of Food has stepped up the pace of seed improvement.

The matter of launching satellites is not simply for the military, satellites are divided into many types, and military satellites are just a small subject.

For example, meteorological satellites can monitor the climate of the observed area, and can also be used as a communication relay to avoid the limitations of the terrain.

Meteorological satellites play an auxiliary role in the growth of crops, predicting weather information in advance, etc.

Eventually, Eric explained something before dragging his tired body on the plane back to Berlin.

When I flew back to Berlin, it was already evening, and because there was no navigation equipment and night vision equipment, German civil aviation and military aircraft would not choose to travel at night.

Eric didn't forget about this either, and the night vision device began to be tested on military reconnaissance aircraft after Haber got a reusable large-capacity battery.

After a busy day, Eric fell asleep on the sofa not long after returning to the Hanseatic Palace, and before dawn the next day, Eric woke up, only to find a person lying on him.

Eric's eyes were blurry, he couldn't see who it was, and the lights were off before dawn, so he had to touch it with his hands.

"Ah, are you awake?" Eric breathed a sigh of relief when he heard this, fortunately it was Dinah.

Eric didn't know why he was relieved, and quickly rolled over.

"Why are you here?" Eric asked.

"When I came back, I found you asleep, so I looked at you, and before I knew it, I fell asleep." Dinah said incoherently, still confused.

Eric immediately took a blanket and put it over Dinah and picked her up.

"What are you doing? Put me down, there's someone out there. Dinah said quickly.

"Someone out there? Where else are you coming from at this time? Eric wondered.

"You, you're really busy, tomorrow is the National Day, everyone doesn't dare to go home, and they have been checking the last details here." Dinah explained.

When Eric heard this, he suddenly felt that he was really a big president, and it was about to be the National Day, and he fell asleep as soon as he came back.

Dinah was much more sober after being by Eric, so she had to put her down and turn on the light.

"Are you going to sleep here or go back to sleep?" Eric asked, walking over to his desk.

"I'm not going to bother you here, and Annata seems to have something to tell you before, I'll tell her when I go out." After saying that, Dinah went to the bathroom, tidied up, and went out directly.

Ananta knew that Eric was awake when the lights were turned on in the office, but because Dinah was also inside, she didn't know what it would be, so she didn't dare to go in or knock on the door, so she just sat in the office opposite and watched.

For a moment Ananta was so distracted that she didn't even notice that Dinah had walked in front of her.

"Hey, Anata." Dinah shook her hand and raised her voice.

"Huh?" Anata, taken aback by Dinah.

"Aren't you too tired? Why don't you go back and rest for a while? Dinah couldn't bear to see a young girl fall tired at work.

"No, no, I still have something to report." Ananta immediately scrambled to find something.

Dinah on the side looked at Annata a little strangely, and then said, "Eric is awake, go to him if you have something, I'll go back and rest first." ”

Dinah gave Annata one last meaningful look before turning away.