After listening to the designer's design idea, Li Rujin thought about it, this idea is right, but this design is a bit modest, in order to pursue the balance of various items, and this is a bit embarrassing.

This small submarine can be carried with only two torpedoes, and if this kind of small submarine is really used in actual combat, the opportunity to launch an attack is extremely limited.

If it is discovered, it is unlikely that it will be able to avoid the enemy intact, and coupled with the defects of the submarine itself, it will either retreat or be completely annihilated, and it is rare for the third scenario to occur.

So it is not realistic to want to launch a second attack in battle, the idea of the designer is a little too idealistic, but ignores the actual situation on the battlefield, torpedoes, you can remove two, and the weight of two torpedoes is not light, more than a ton.

For a small submarine, which can have an extra load of more than a ton, there are quite a few articles to be done in this. In addition, the number of people on board the boat can be reduced a little more, and it is better to limit the number of people to about ten. This also frees up a lot of space.

For this kind of small submarine, space is extremely limited, every inch of land is not an exaggeration, in the design, the use of every inch of space is carefully considered and repeatedly verified.

This small submarine also has a fatal flaw, its self-sustaining power is too poor, and it has to float up every 4 hours to replenish air, and for the submarine, every ascent is a fatal crisis, completely exposing itself to danger.

This aspect can be improved, the Dawen Empire has not yet implemented a systematic study on the oxygen supply on the submarine, and can only rely on the snorkel and oxygen cylinder to supply oxygen to the submarine, but the shortcomings are also obvious, the ventilation tube oxygen supply, it requires the submarine to float frequently, increasing the probability of being discovered.

Oxygen cylinder oxygen supply, first, the carrying capacity is limited, secondly, the oxygen cylinder is a high-pressure vessel, encountering a violent collision, prone to danger, in a small, confined space, any bit of danger may bring a fatal crisis.

In the previous life, there were various ways of oxygen supply to submarines on the earth, such as liquid oxygen, oxygen candles, oxidation medicine plates, alkaline electrolyte electrolytic oxygen supply, etc., Li Rujin thought about it carefully and decided to copy the oxygen supply technology of oxygen candles, as for other methods, the technology of the Dawen Empire could not reach it.

Like liquid oxygen technology, the most critical problem is the temperature control, liquid oxygen needs to be kept below -183 degrees, this alone made Li Rujin give up liquid oxygen supply technology. Oxygen supply by electrolyte, not to mention the problems on the equipment, the electrolyte electrolysis requires a lot of electrical energy, which can make Li Rujin avoid this technology.

The oxygen candle is much simpler, the oxygen block of the oxygen candle is made of chlorate (such as sodium chlorate) as the oxygen agent, metal powder as fuel, adding a small amount of catalyst, chlorine inhibitor and binder, after mixing, pressing or casting.

Moreover, the oxygen candle has the advantages of rapid oxygen production, large oxygen production, small size of equipment, light weight, long storage period, etc., and most importantly, this thing is safe, and it is most suitable for use on submarines.

The manufacturing process is not difficult, the manufacturing is easy, the raw materials are cheap, and it can be produced in large quantities. Become a real hidden killer.

Li Rujin was thinking here, but the R&D personnel on the side were embarrassed, what happened to this guy? Suddenly stopped talking? And still in a contemplative state? The point is that this contemplation is only ten minutes, which is embarrassing!

The people on the side couldn't hold back any longer, coughed twice, these two coughs woke Li Rujin up from his contemplation, Li Rujin saw the situation, and hurriedly apologized to the staff on the side, and then told his thoughts to the R&D personnel.

At the beginning, the military's R&D personnel still had some contempt for Li Rujin, after all, Li Rujin's age was there, and it was a little difficult not to be despised by people who were only in their twenties, and it was a bit difficult not to be despised by people who were engaged in R&D.

But after listening to Li Rujin's thoughts, these people were silent, constantly reflecting on themselves, they were still a little self-righteous, and they had to admit that the little guy in front of them was more comprehensive and thoughtful than they thought.

But there is still a glimmer of doubt? Is that oxygen candle really like what Li Rujin said? If it is really like what Li Rujin said, then the submarine of the Dawen Empire can turn into a dragon. They are engaged in research and development, and naturally they know what the self-sustaining power of submarines means to submarines.

Before seeing the real thing, they were skeptical.

Li Rujin also knows very well that at the current level of science and technology, the oxygen candle is completely a thing against the sky, it is not only suitable for small submarines, so to speak, as long as it is a submarine, there is a place for oxygen candles, no matter how big or small.

Li Rujin can fully understand the skeptical attitude of the military R&D personnel, and only after the oxygen candle is manufactured and verified can these R&D personnel no longer be suspicious, and at that time, it is estimated that these R&D personnel will be surprised.

The oxygen candle was put aside in advance, and Li Rujin and the military's R&D personnel collectively discussed the design of the mini-submarine, and at this time, the attitude of both sides became serious, this is the design of a weapon. No matter how reasonable Li Rujin said earlier, no matter how comprehensive he thinks, he needs to take it seriously at this time.

Any successful scientist must have a persistent spirit, a spirit of perseverance, and the foundation of this spirit is to have strong self-confidence in himself.

Therefore, this discussion is destined to be full of sparks and passions, and no one will be persuaded so easily. In the end, Li Rujin still relied on his strong knowledge reserve and understanding of the war to occupy an advantage in the discussion, but he did not convince the other party, but only made the other party agree with Li Rujin's ideas and theories.

However, the military's R&D personnel have not given up their own theories, and are still sticking to their own theories, which is an excellent phenomenon, and only by discovering their own shortcomings in debates, and at the same time absorbing the knowledge of the other side to achieve common progress.

After a debate, Li Rujin's mouth was dry, and the military's R&D personnel were also out of breath, and the two sides looked at each other and smiled, and they both had a feeling of seeing heroes and sympathizing with each other.

A R&D personnel of the military stretched out a big hand, Li Rujin did not hesitate, and also stretched out his hand, the two hands were tightly clasped together, and the two sides were rivals competing with each other in the R&D project.

But in private, they are heroes who identify with each other. They are also comrades-in-arms on the military scientific research front of the Dawen Empire, and they will definitely contribute their youth and blood to the military science and technology of the Dawen Empire, and prove themselves with one research and development achievement after another.