Liu Qing and the R&D personnel of Zhengxin Power Company really didn't expect that they would be able to do projects with the First Academy of Aerospace Science and Technology one day!

What is the First Academy of Astronautics?

The full name is China Academy of Launch Vehicle Technology, which is the largest research, design, trial production, test and production base of missile weapons and launch vehicles in China!

The extraterrestrial achievements that carry the dreams of countless astronauts all take off from here. The famous Long March series rockets are the results of the First Academy of Aerospace!

Looking at a group of guys with smiles and no words who had to move things to the R&D building of Zhengxin Power Company as if they were doing tricks, Liu Qing and the others smacked their lips.

With the arrival of these people, the R&D Department of Zhengxin Power, which could have been called strict, has risen sharply.

Everyone's personal USB flash drives, mobile hard disks, all have been checked, and even the special scenery on Liu Qing's key chain, including SDNM-061, SDNM-064, ABP-171, this kind of peerless treasure, with a total size of more than 60GU disks, have also been ruthlessly confiscated.

Not only that, but all the hardware connected to the computer of Zhengxin Power has also been filed with the management team that came with the First Academy of Aerospace Science and Technology, and the serial number of the equipment system monitoring hardware has been marked.

All computer systems have been downgraded from IIN7 Enterprise to XP, and the IFI that the group of kids in the R&D center rely on for their survival has also been pinched. Just five minutes after the children of Zhengxin's R&D team made several gigabytes of traffic packages for themselves, they sadly found that the mobile phone signal within two kilometers of the entire R&D building was blocked.

Li Fanyu looked at Wang Kai, the person in charge of the fuel storage part of the submarine, and smiled helplessly: "Your secrecy level is also a little higher."

Wang Kai is not very old, and he looks like he is in his early thirties on the surface, and when he heard Li Fanyu complaining, he also spread his hands helplessly, "You guys will just take a moment, the level is temporary." I've been working in the First Academy of Aerospace for seven years, and now no one talks to me on QQ. ”

Li Fanyu was stunned for a moment, "What's the matter?" he pointed to the expressionless safety supervisors around him, and asked, "It's too long to use it, so it won't be used?"

"!" Wang Kai spread his hands, "Whoever I talk to, whose QQ number will always log in from another place...... I always inexplicably open call log roaming ......"

"Oh......"

Li Fanyu understood, he shrunk his neck, "Hehe...... Then you're miserable."

Wang Kai patted him on the shoulder, "It's okay, this time it's a small job." Liquid gas storage technology in the whole of China, no, probably in the world, our first aerospace academy should be able to rank among the top three in terms of technical reserves. When you came, I had a general understanding of it, and it wasn't difficult. I guess in a week, I can get you a good idea. When the time comes, what will you do when we leave?"

Li Fan grinned. The heart is clean and, using your technology, as long as the submarine project is not completed for a day, this secrecy level will not be loosened for a day!

But looking at Wang Kai's apologetic and helpless face, he didn't say anything.

………

Wang Kai really isn't bragging.

The main research and development scope of the First Academy of Aerospace Science and Technology is the launch vehicle. On the Long March series, the liquid fuel propulsion system has been thoroughly played. From the nitrous tetroxide and dimethylhydrazine liquid fuel booster of the Long March 1 to the solid fuel propulsion system used in the Long March 10, the upgrade of propulsion fuel is a very important part of the development history of the Long March series of launch vehicles.

Li Fanyu's storage problem of liquid oxygen and hydrogen that is now stuck has been overcome by the First Academy of Aerospace Science and Technology in 07 - that is, in the research and development process of Fat Five.

The main fuels used in the Long March 5 are liquid oxygen and liquid hydrogen.

For the submarines that are now there, a stable fuel storage technology is needed. But compared with the launch vehicle that costs more than one billion yuan at every turn and carries inestimable extraterrestrial equipment on it, it is undoubtedly a small thing!

Therefore, in the eyes of the developers of the First Academy of Astronautics, this incident encountered by Li Fanyu is not a problem at all......

After the initial communication, the two parties started their own part.

For a time, the progress of the entire submarine transformation project has increased sharply!

………

Time flies.

In terms of Zhengxin Power, the sincere cooperation with the First Academy of Aerospace Science and Technology is boosted by the strong processing capacity of Zhengxin Industrial Base.

After three simulation tests, the transformation plans of the No. 054 Han-class nuclear-powered attack submarine and the two Kilo-class conventional-powered submarines of the 079,080 class have been basically confirmed!

After transporting all the assembled assemblies that have completed trial production in Zhengxin back to the 920425 Submarine Research Institute through the escort of warships, the final assembly work has also been successfully completed!

After the transformation, the power system of the two Kilo-class submarines was simplified by the bloated lineup of the original two sets of 4DL-42M enclosed diesel engines, one set of PG-141M general propulsion engines, one set of PG121 generator sets, and two sets of standby emergency generator sets, and simplified a group of 8FV-52B enclosed diesel engines modified from Poseidon H-V8, a set of ultra-high-power LS-022 fuel power generation propulsion units, and two sets of retained used emergency generator sets.

Although it still looks like three parts, after this transformation and upgrading, the power and transmission system of the 054 Han-class nuclear submarine has been simplified by about 2,000 parts. 079,080 Two Kilo-class conventionally powered submarines are missing nearly 8,000 parts!

But in such a big slimming, in exchange for an increase in motivation.

In the three simulation tests, the submersible speed and floating speed of the 054 Han-class nuclear submarine, which was only upgraded by upgrading the cooling system, increased by 5 percent and 7 percent respectively.

However, the two Kilo submarines that used Zhengxin's new "Hurricane" pump-jet propulsion system, LS-013B large rare earth permanent magnet motor, and the new liquid fuel cell API system increased the submersible speed from the original 18 knots to 23 knots!

Such a speed has already reached the standard of the main battle nuclear-powered submarine of many countries!

In the test dock, Li Fanyu and Xing Yaxin stood on the observation embankment with their hands in hand, watching the ground crews who were busy like little ants set up the equipment required for the test.

"Dong Li, it's up to today!" Xing Yaxin said with emotion.

Li Fanyu smiled slightly, "Yes." In terms of power, we have taken three submarines to the extreme. But for the current marine environment, power is secondary. It's a mule or a horse, and you have to pull it out and slip away. Whether or not the three submarines can be allowed to cross the sea in hiding from the sky depends on today. ”

"Report!"

While the two were staring at the submarine in the test dock, a communicator ran to the two and saluted.

"Speak!" Xing Yaxin returned the salute.

"The test preparations are complete, please instruct the chief!"

"Simulate the undersea environment, turn on the sonar detection sensitivity to the maximum, and start testing!" Xing Yaxin almost roared, ordered.

"Yes!" the correspondent took the order, turned and ran to give the order.

With a busy period of work below, the test officially began.

The huge simulated dock creates an audio environment that is indistinguishable from the bottom of the sea. In the dock, the submarine fixed to the test frame slowly started the horsepower......

Tick-tock, like a ghost's lamenting sonar sound, also appeared on the detector in front of Li Fanyu and Xing Yaxin.

……

Five and a half hours later.

Seeing the complete data that appeared on the tester, Xing Yaxin couldn't hold back himself anymore.

He touched the corner of his eye and grabbed Li Fanyu's hands hard; "Dong Li, on behalf of myself, on behalf of the 920524 Submarine Research Institute, and on behalf of the South China Sea Fleet, thank you!"

Just when Li Fanyu was overwhelmed by his solemnity, the correspondent strode over again.

"Chief! The fleet has sent an order to detect that a large number of ships and ships of other countries have assembled in the international waters near Apo Jiao Island for military exercises! In order to avoid unnecessary losses, the fleet has ordered our side to withdraw the ships that are being tested in the nearby waters!"

Xing Yaxin, who had tears in his eyes, was stunned for a moment, and then his eyes widened angrily: "Why did you withdraw?"

He casually took down the mobile hard disk containing the test data of the three submarines from the tester and stuffed it into the communicator's hand, "Go, hand over this information to the fleet headquarters! Just lock up our 920524 research institute, the three submarines that have just completed the reconstruction, and apply to go to the international waters for testing immediately!"

"Chief...... Today?"

Hearing this order, the communicator holding the hard drive was a little stunned.

Looking at the three submarines that had completed the test, Xing Yaxin's cheeks twitched for a while.

Scenes from the HH incident 20 years ago, scenes from more than two months ago, flashed in his heart like a silent movie.

With the same anger in his eyes as he did more than twenty years ago, he said word by word;

"That's right, today!"