Battle of the Third Reich

Walking across the steel trestle covered with wooden boards, Xu Jun and his party set foot on the deck of U1001. ↑, unlike the flat open upper decks of previous submarines, the deck of this new submarine is slightly narrower by comparison. The steel deck engraved with anti-slip lines and drain holes extends along the central axis of the submarine to the control tower, then bypasses from both sides of the control tower and extends to the end of the boat about ten meters before the end. The narrowest deck is only 1.5 meters wide at its widest point, and the narrowest position is on both sides of the control tower. It is only 50 centimeters wide, which is just enough for a sailor to pass through.

The hull outside the deck presents a clear circular line, reaching down to the water from both sides of the deck. The cross-section of this boat is round, which is just the first impression this submarine left on the visitors.

In the past, the German submarine had a very complicated cross-sectional structure, but just added a bunch of required cabins, fuel tanks, ballast tanks, head and tail balance cabins, etc. outside the pressure hull. The overall shape is still inseparable from the surface ship. In general, it is a battleship capable of diving, and the surface of the ship is the home of this ship. Underwater linearity is only a secondary issue in the minds of designers. The overall design of German submarines pays more attention to maneuverability and seaworthiness when sailing on the surface. Surface speed and endurance were the hard indicators of a submarine at that time.

Although the xxi-type submarine adopts the concept of surpassing the times, the designer's thinking still failed to circumvent the original thinking mode. Although this submarine adopts the double-hull design of the times, the line type also uses a lot of the time. Achievements in fluid dynamics, many details have been clearly optimized, but due to the inertia of the thinking mode, this submarine was a bit breathless in the final design. The designer installed a submarine for this submarine. The necessary wave-breaking bow has also been adopted in the hull structure.

Although this submarine surpassed the times in concept, the design of the boat exposed the limitations of the designer’s vision at that time, making it a legendary super electric boat that could only become a nondescript transition model. , Far below the actual value of the concept she represents.

In Xu Jun's view, this sharp blade-like bow is completely adding to the snake. Instead, it weakened the potential of this submarine. Since this submarine generally adopts a double-hull design, this means that any change in the shape of the non-pressure-resistant shell outside the inner pressure-resistant hull will not affect the internal layout. Xu Jun didn't hesitate to cut off the bow structure of the ten-meter-long blade-shaped wave-breaking boat in front. The piece of steel will only affect the submarine's underwater maneuver. Imagine a chopstick and a spoon being stirred in the water Difference. You can find out how much resistance this slightly forward wave breaking bow will cause to the submarine's underwater steering maneuver.

Xu Jun replaced a blunt shell at the position of the original bow, because the internal structure is difficult to be further optimized. The bottom of this submarine cannot be modified into a drop line shape that is popular in later generations. Because of the aspect ratio, Xu Jun can only make a step back. This submarine was replaced with a whale-shaped bow popular in later generations, as close as possible to the advanced conventional submarine in the future.

In order to replace the bow of this boat, Xu Jun was exhausted. He did not have similar information in his database. He can come up with the design drawings of mainstream diesel-electric submarines in the 1950s, but the performance of those submarines is not much greater than xxi. Improvements, some designs are not as good as this submarine of the Nazi era.

Xu Jun could only draw on the original personal memory to draw a basic sketch for the design bureau to improve. A group of fluid dynamicists and mathematicians spent a week to finally calculate what they think is the best optimization plan. At the same time, the brain hole of the head of state opened these scholars' eyes and opened a closed window for them. Saw another new development path. In fact, these problems have already been revealed in the design of torpedoes in the past, but no one has specifically conducted further research for this. This time Xu Jun’s design completely unveiled this veil, and experts began to rub their hands, looking forward to this. The field made more significant discoveries.

The new type of bow has been proven to greatly improve the underwater performance of the submarine. The design of the head of state has surpassed the entire era. No one has proposed a similar concept in the past. A new type of submarine mainly based on underwater combat, Deniz finished. Design drawings, can't wait to run to the headquarters to pay homage to the apostle.

Since Jun Xu has improved the bow of the xxi type. The structure of the stern must of course be changed accordingly. However, Xu Jun found that the design of the xxi type stern has reached the level of the 1950s, which can be said to be the pinnacle of current technology. In addition to being consistent with the overall line type, the structural arrangement has been separated from the usual surface of the German submarine. Ship mode.

If the submarine is generally modified in the future, it will definitely affect the structure of the entire tail section. And in the absence of a more powerful engine, dual-machine dual-shaft propulsion is still the mainstream of the design of conventional diesel-electric submarines in the world for a long time.

Of course, Xu Jun knows the single-axis large tilting propeller, and also knows that the cross and the X balance the rudder. The problem is that these techniques are beyond the scope of his database. He can only make some experimental improvements based on the combination of the techniques he has in hand and memory. Xu Jun optimized the shape of the stern as much as possible, and strengthened the mechanism of the horizontal rudder and vertical rudder on the original basis. Enlarging the area of ​​the rudder surface, he also added two deflectors similar to the **** of the aircraft to the horizontal deflector of the fixed paddle shaft, which can increase the effectiveness of the horizontal rudder in high-speed navigation and guide the flow through both sides. The opening and closing of the board can also be used as an emergency rudder to adjust the course and balance of the submarine.

Under the revision of Xu Jun, this submarine has truly become a transitional version, a transition of an era. According to Xu Jun's estimate, it can probably reach the level between the 1960s and the 1970s. Of course, it is only his personal opinion. In fact, there should still be a big gap with those three generations of mainstream submarines. However, in this era, this submarine will be a nightmare for all enemies. Xu Jun firmly believes that with the performance of this submarine, no **** ship can match it. If controlled by a cunning captain, the enemy even No one will know who attacked himself until the moment of sinking.

Xu Jun corrected the cross-sectional shape of the submarine to make it closer to a circle. Of course it is unrealistic to completely reach a perfect circle. This boat should be considered to be closer to an ellipse, which looks more plump than the original egg shape. Underwater The maneuverability has thus been dramatically improved.

"Please go here, my head." Captain Heinke stood by the command tower and waited, temporarily adding a steel wire fence here for safety.

The changes made by Xu Jun to the control tower are not too big. He liked the shape of the original control tower of the xxi type very much, so he basically kept the original basic design, but only made some minor modifications in some details. The original floating design on the top of the control tower was changed vertically downward. In Xu Jun's view, the upper layer was originally covered under the roof of the command tower, and such a flare is not necessary at all.

The front and rear two twin electric 20mm machine turrets have been retained. Although Xu Jun does not think that this thing can play a big role, it is better than nothing. It should be no problem to scare the low-altitude target. It can also have a good sound and light effect when it is used to sweep some water targets. More importantly, it can increase the safety of some crew members slightly so that they will not feel their bare hands, so Xu Jun finally decided to keep these two almost become xxi The characteristic anti-aircraft turret, and also consider to come up with newer replacement products in the future to increase the anti-aircraft firepower of this submarine.

The u1001 has only three external hatches above and below the whole boat. This submarine is different from the previous models. It has one tail torpedo loading hatch than the ordinary conventional submarine. Because this submarine does not have tail torpedo launch equipment, of course, there is no cumbersome tail torpedo compartment.

All weapons of the submarine are installed in the bow of the submarine, generally only small offshore submarines. The configuration of the giant shark of more than two thousand tons, such as u1001, is a bit special. In fact, this is also the valuable experience of the German navy's long-term use of submarines. Although the tail torpedo increases the means of submarine attack, it also consumes valuable tonnage. Most of the time, the submarine is facing the enemy, and there are not many opportunities to use the tail torpedo. Turning the bow to attack is both troublesome and dangerous. Many submarine captains will avoid the use of tail torpedoes, but treat it as a last resort.

The xxi model uses technology beyond the times. The new hydraulic auxiliary loading equipment gives her the ability to quickly reposition torpedoes in combat. This improvement complements the excellent maneuverability and concealment of the submarine, and xxi will always have the initiative on the battlefield, instead of the wolves chased by enemy ships after shooting torpedoes as usual. Therefore, eliminating the tail torpedo tube will not reduce her combat capability, and the tonnage and space saved can be used to install more advanced equipment.

Except for the torpedo filling of the bow. The xxi submarine has only two personnel entering and exiting the hatch, one of which is on the top of the control tower platform, directly connecting the captain's control tower and the general command cabin. The other door is inside the enclosure of the control tower. A side door on the shell of the control tower enters the control tower, and then can enter the submarine through the access hatch on the deck.

To use the hatch in front, Xu Jun had to step on the foot on the shell of the control tower. Climb the control tower more than four meters high and turn into the fence to reach the lookout deck where the hatch is located. Although Xu Jun does not mind doing this, the other people on the scene will not allow him to take this risk.

So a group of people can only enter the submarine from the second hatch. Not only Germany, submarines of all countries will leave a hatch in this position. Xu Jun insisted that he be the first to enter the submarine. On this issue, everyone obeyed obediently. The head of state gripped his cane under his arm and climbed down the straight iron ladder.

When the shiny riding boots stepped on the floor with a rubber anti-skid mat, Xu Jun turned his head and looked around. As soon as he looked up, he saw a chef holding a soup ladle, standing in front of the electric stove.

"Hi, Reinhardt!" The chef trembled and stood up to salute. The spoon in his hand hit the smoky trotter hanging on the bottom of the closet. go with.

"Hi... Forget it, you continue to work." Xu Jun raised his scepter and knocked the brim, then turned his head and looked towards the top of the ladder.

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