My German Empire

"Caught five American spies? One of them is killed?"

Looking at the text from Greenland, Jenik couldn't help but hibernate. "I am really interesting. Are they ready to send soldiers to grab Greenland?" The forebella is a good frontier base. For Germany, it is also for the United States. If the United States occupies Greenland, the B29 bomber can fly to German native bombings.

"Does those people have arrested?"

Lein Had is something unclear. "Shouldn't know, they were arrested in the ground."

Jenik laughed. "Then play them, see how many people and equipment can be made."

Lein Had immediately guessed the meaning of Jenik. "Yes! Then I will arrange it."

Americans will not really have to land in Greenland? I wondered for a while, Jenik found Dunnitz.

"His Royal Highness, until yesterday, we have hit 34 vessels, but it is a small warning ship, patrol ship. According to your instructions, we did not in depth in their defense circles." Americans' peripheral defense lines are quite loose, If it is not the order of Yatik, the submarine troops have probably kill the door of the US Navy base.

"It's good. Just just, the Americans spy from Greenland, but it was very unlucky that they were arrested on the spot. Perhaps the Americans have a little action, and some submarines are patrolled near Greenland."

"Yes."

"How is the 'Tiger Shark'?" (197th chapter has an introduction)

One mentioned this, Dunnitz's face is an excitement that can't be suppressed. "The Hall, half a month ago, 'Tiger Shark' has completed the sea test, all the state is good."

"Oh, that is, I can do it now. I have to fight for the sea. I sent the best crew to drive it. That Otto. Krez is good, let him go to the United States native to turn around." Last attacked Scarpa After the bay, Purin was awarded the double sword silver rubber leaf knight iron cross medal, and promoted to the middle school, naturally it is impossible to continue to fight.

"Tell Krezimer, don't waste torpedo on the small fish Xiaoxi, to play a large battleship of more than 20,000 tons." It is best to sink a few battleships or aircraft carrier. "How is the new batch of tiger shark class submarines?"

"The Hall, three super submarines have been started at the same time. And this submarine will use the AIP system."

Conventional power submarines are also known as Chai-Electric Submarine, with three kinds of homes: water surface, and the depth is used to use ventilation pipes and underwater cruise states. The first two ways need to start the diesel engine and the generator, the operation of the diesel engine is inseparable from the support of the air. The real hidden underwater cruise is powered by the battery pack on the boat. However, the number of boat-carrying batteries is limited, and the time, the time, which is limited, less than 1 to 2 days, less hours, the submarine, the submarine, which needs to be up to the water, charging the battery pack with the diesel generator, which greatly increases The exposure rate of the submarine or the possibility of being detected.

In order to solve this technical problem, the developed countries in the later generations have launched the pre-research and feasibility study in this area. Finally, four types of AIP (non-dependent air propulsion) technology were studied.

It is a closed cycle diesel engine (CCD) AIP, Stirling Engine (SE) AIP, Fuel Battery (FC) AIP, respectively, respectively, and Small Nuclear Power (AMPS) AIP.

In CCD-AIP, the diesel engine itself does not require significant improvements, the mainframe technology matures, other auxiliary system issues, such as recirculating gas mixing, exhaust gas spray cooling, CO2 seawater absorption principle, principle of water treatment system, related units have studies There is no large technical risk. Therefore, the development of CCDAIP can be small in technology, and there is less investment. Of course, relatively, the diesel engine itself has a large number of noise and air noise, but modern vibration isolation techniques can be required to reach the diesel engine after vaporizing the noise indicator.

The original Soviet Union is very valued, and 30 special powerful Q-class submarines have been built during the Cold War. The submarine has three diesel engines. Two is a normal diesel engine, one is a closed circulation diesel engine, providing a compressed liquid oxygen Oxygen is required for diesel engine. However, this technique is not stable, and the Q-class submarine is famous, of which the M-256 boat caused liquid oxygen explosion in the fire, and the submarine will sink, so the Q-class is also crowned with the "lighter". In the early 1970s, the Q-class boat was dismantled.

In the 1990s, the German picked up this technology and successfully tried 250 kW closed circulation diesel engine systems. Then, the Netherlands and Italy have successively tried the closed cycle diesel engine system for modification or for newly built conventional power submarines.

This makes Yatik are somewhat hard, hesitated for a long time or decided to continue to study the closed cycle diesel engine.

As for the Stirling Engine AIP, Philips in the Netherlands has been successfully studied, and it is used.

And fuel cell AIP, it is a little more mature decades.

Yaki picks up the phone to call 51. "Dr. Heisenberg, how is the study of the nuclear power system of submarines?" Dr. Albert took over the nuclear energy research department.

"His Royal Highness, we have built a simulated heap, after several verification, the project can be put into use. It allows 3,000 tons of submarines with 16, 17 high-speed."

"..." The 16th, 17th speed of the submarine in Hessoros is quite amazing, but he doesn't know that the nuclear submarine in the later generation can basically take a high air speed of 30. Even the world's first nuclear submarine parrot score also has a speed of 23.3.

However, Jienk is already very satisfied. After all, now 40 years, a variety of industrial technology development needs to take a long way, and cannot be eager to be in a hurry. Once this nuclear power submarine is built, it can run in water under the water for several months, as for how long it can run, depending on the underwater tolerance of the submarine soldiers.

"Dr. Heisenberg, after half a year, it is necessary to install the submarine after half a year. It is absolutely guaranteed to run safety issues." Yaki knows the terrible of the nuclear energy, once a little error, that is the Pandora's magic box. Although the nuclear reactor on the submarine will not explode like a nuclear bomb, even if a slight leak, the submarine soldiers in the closed space are also fatal. "Be sure to make multi-layer stringent closure measures, to do absolutely separating nuclear radiation."

After a post, Jen Ni is put down the phone. "Since three submarines, that is just, a closed cycle diesel engine system, a Stirling engine system, and a load of the nucleation."