The development process of Japanese oxygen torpedoes, if you don’t look at the background of the story, you can use it to shoot an inspirational movie. The technician’s bloodshed laboratory has become a daily plot. The Japanese Navy even customized a set of armored bulletproof isolation screens for this project. This is not a development of a torpedo engine, but it is simply a life-threatening one with your head on your head.

Because the torpedo project is a naval secret, the technical department responsible for R&D cannot hire external experts, and can only explore by relying on past experience. These people may be experts in machinery and manufacturing, but the problem is actually in the fuel used. For this issue, the R&D team is all laymen. The result is conceivable that technicians are constantly improving the structural parameters of the engine, but the result is a tragic failure again and again. It is still very touching to say that this mentality of not giving up after repeated defeats is still unwilling to give up. But on the other hand, these people have exploded so many times, but they have not even fully understood the causes and principles of the explosion.

The R&D personnel only knew that after inputting oxygen of more than 25% purity into the combustion chamber, the engine exploded into a fireball as soon as it started. Asked them why this happened, a group of people would only scratch their heads with bitter faces. However, they obtained a lot of detailed and reliable data from countless explosions, which laid a deep technical foundation for the final successful development of oxygen torpedoes.

The key to the final solution was found by people outside the Japanese Navy. At that time, the Japanese Navy Shipbuilding Headquarters saw that it was not a solution to blow up like this, and it seemed that it would be impossible not to seek foreign aid, so they planned to pay for professionals to join the project's research.

However, the Navy's funds were tight at that time, and some of the spare money was all built by warships. In the end, the commissioned fellowship approved by the Shipbuilding Headquarters was 7,000 yen. Now, 7,000 yen is only enough to buy two cigarettes, but in Japan in the 1930s, it was really a big sum of money.

In 1932, the international exchange rate of the Japanese yen was one dollar to three yen, which was also a relatively strong currency. A Japanese Navy private's monthly military salary was about 13 yen, which was just enough to buy a bottle of the best sake of the year. A rookie lieutenant who just came out of Eta Island had a monthly salary of 850 yen, and almost two popular tung wood cabinets on the market at that time. A brand new imported bicycle in a Tokyo store costs about 90 yen, while a 20 kilograms of high-quality flour can be bought for only 3 yen. The 7,000 yen of 1932, which is equivalent to 13 to 14 million yen, which is enough to allow a commoner to spend two years comfortably.

The problem is that this amount of money seems to be quite large, but it is far from enough to put it on the research project at that time. This kind of blow-off experiment was too expensive. As a result, the Minister of the Shimamasa Headquarters and the Chief of the First Section each donated half a month's military salary, and then he collected the 13,000 yen funding required for the research. The project was finally able to proceed smoothly.

It is really worthwhile to spend this money. The University of Tokyo, which outsources the project, is a top institution after all. It quickly found the cause of the explosion and also discovered an important situation in the experiment. If pure oxygen is added after the oil fuel is burned, the explosion can be prevented.

Navy researchers were ecstatic when they learned about this situation. They immediately adjusted the engine's ignition procedure, first started with ordinary air, and then started to input pure oxygen into the cylinder after the power stabilized. As a result, the first test was perfectly successful. Then the Japanese Navy conducted several experiments in succession, with success and failure. Finally, in 1933, the "Ninety-Three Acid Torpedo" that made the navies of European countries tremble in the future was formally produced.

Because the combustion accelerator used when kerosene engines are burning is oxygen, the combustion efficiency is several times that of ordinary air, and the huge lightning body can accommodate more fuel, this torpedo has both advantages of high speed and long range. When this is placed on ordinary thermal torpedoes, these two parameters are usually presented in an inverse proportion.

The maximum range of 40,000 meters has exceeded the main gun range of most warships. There is almost no residual gas emission after oxygen is burned. There will be no obvious bubble trail dragged by ordinary torpedoes during navigation, which greatly increases the concealment of spear torpedoes during attack.

In fact, the spear also has a tail trace. Its two pairs of high-speed inverted propellers will produce a cavitation effect. However, the depth of navigation is usually less than three meters above the water surface, so the tail trace on the sea surface is not very obvious, but if you observe in the air, you can still clearly see the straight torpedo underwater tracks.

At the same time, because of the special starting method of Type 93, during the voyage of 500 to 1,000 meters just launched, the engine did not burn pure oxygen, but ordinary compressed air. At this distance, the spears and ordinary torpedoes have bubble trails, but in actual combat, the Japanese army often launches lightning strikes from a distance of 10,000 or even 20,000 meters. The targets of attack often do not even know that the enemy fires torpedoes. Therefore, in the early stages of the war, the US Navy fleet, which did not understand the parameters of Japanese torpedoes, suffered a lot of losses.

If you ask the German Navy whether this torpedo exists, there is no doubt that this is the case. The German head of state can draw a structural sketch of the Type 93 acid torpedo at will. If you are interested, he can even draw subsequent improved models for you.

Redell's headquarters has obtained all the technical parameters of Japanese oxygen torpedo and has become interested in this torpedo, but this is just interest. Redell is completely disliked such dangerous and outdated things. This torpedo is full of obsessions unique to the Japanese nation, and its flaws and advantages are as obvious.

The Type 93 torpedo has technical hidden dangers and is a weapon that is equally dangerous to its hostile ones. The Japanese Navy is very clear about this. If this thing is used well, it is a demon knife to kill the enemy, but if it is not used well, it will become a blade of self-destruction. The more than 500 kilograms of Type 97 explosives in the torpedo thunder will not show mercy because of the same nationality when it explodes.

Historically, the performance of the Type 93 oxygen torpedo was indeed amazing, but when the US military understood the technical indicators of this torpedo, it immediately improved its naval combat tactics in a targeted manner. When the US military's carrier-based radar technology matured, the losses caused by spear torpedo began to drop rapidly.

Often in a naval battle, the Japanese army struggled to fire dozens of torpedoes, but not only did not hit the enemy, but also suffered heavy losses in the joint encirclement of the US naval and air. In the end, the remaining lightning strike team of the Japanese Navy was forced to abandon the long-range lightning strike tactics they had always admired and began to resume attacks at regular shooting distances or even close to enemy ships. It can be said that the technical advantages of this torpedo in the early stages of its development were completely gone.

Captain Robin was a little curious about the Type 95 torpedo. This was just the kind of curiosity of the soldiers about new weapons. Although he knew the parameters of this type of torpedo very well, this was the first time he saw the real thing, so he would pay more attention. He found that the captain of the German submarine ship was interested in the Type 95 torpedo on the spare thunder frame. Guidao couldn't help but smile slightly. He was not worried about leaking any secrets, because it was impossible to guess the performance of this type of torpedo just by looking at the appearance. The appearance of the Type 95 torpedo is no different from the conventional 533mm torpedo. If you don't disassemble the lightning shell, you will not be able to find out the trick.

When the German turned around in the narrow bow torpedo compartment, Guidao stood at the door of the waterproof cap and greeted: "Captain Robin, please follow me to visit the power compartment in the rear."

"Okay, no problem, Mr. Colonel." Robin nodded and slapped the torpedo launcher in front of Yi No. 60. The flower room standing beside him suddenly felt his eyelids tremble, and a strange feeling appeared in his heart that he didn't know how to describe it.

ps: It's finally done, thank you for your understanding.

These chapters are popular science chapters, and some book friends may not like it, but since they have written it, the author wants to tell everyone the interesting stories he knows. After all, the book friends in this book are not all World War II historians.

But it's too soon, the plot begins to advance, and after this scene, our perspective will return to Shanghai.

ps2: Starting today, the author will be admitted to further his studies. At least two days a week will be full-time courses, and writing will definitely be affected. I am considering how to arrange the update time reasonably.

Thank you for your support, the author will continue to work hard.
Chapter completed!