Perhaps it was really as Li Hui thought, after recruiting Fan Ming, the functions of the system were fully activated. The new "message board" on the interface may seem inconspicuous at first glance, but it allows Li Hui and the Biochemical Soldiers to communicate easily wherever they are, which is of great significance at the end of the 19th century, before the invention of wireless telegraphy.

The function of "optimizing" weapons and ammunition, although not cheap, is definitely worth the price, and with the addition of this function, the information of the system product has become more detailed

"Well, guns don't cost money to test and have a perfect shooting table", this alone is enough to surprise Li Hui.

You must know that because of the high cost and short life of large-caliber artillery barrels in the world, it is impossible to carry out too many tests, so the firing table is naturally relatively rough, if these perfect firing meters are told to the Beiyang naval division, it can undoubtedly greatly improve the accuracy of the artillery.

Perhaps it was really as Li Hui thought, after recruiting Fan Ming, the functions of the system were fully activated. The new "message board" on the interface may seem inconspicuous at first glance, but it allows Li Hui and the Biochemical Soldiers to communicate easily wherever they are, which is of great significance at the end of the 19th century, before the invention of wireless telegraphy.

The function of "optimizing" weapons and ammunition, although not cheap, is definitely worth the price, and with the addition of this function, the information of the system product has become more detailed

"Well, guns don't cost money to test and have a perfect shooting table", this alone is enough to surprise Li Hui.

You must know that because of the high cost and short life of large-caliber artillery barrels in the world, it is impossible to carry out too many tests, so the firing table is naturally relatively rough, if these perfect firing meters are told to the Beiyang naval division, it can undoubtedly greatly improve the accuracy of the artillery.

It's a pity that the current ranging methods and sighting devices are still very backward, not to mention the fire control system, and the effective range of artillery is generally very close, especially naval artillery, so the accuracy of the artillery itself has a limited impact

But even so, considering that the gunners of the Beiyang Naval Division have generally not fired many original large-charge explosive shells (including matching trainer shells) before, these perfect shooting meters still have great practical significance, at least they can save more than half of the training volume of the gunners of the Beiyang Naval Division, and these are all silver!

Realizing that he had saved a lot of money for the Beiyang Naval Division, and the aluminum powder purchased by the previous trustee in Macao had also been delivered, Li Hui decided to finally complete the research on KClO3 explosives. Although the price of aluminum powder is as high as more than ten times that of KClO3, it is still much cheaper than picric acid, after all, aluminum powder is only used as an additive in explosives and not as a main body.

At first, Li Hui planned to directly follow the formula invented by the Eighth Route Army in history, but after careful consideration, Li Hui finally decided to increase the proportion of aluminum powder in explosives, "The stability of KClO3 is always a problem, and aluminum powder can reduce the sensitivity of explosives, and adding more should improve safety." And as long as the ratio is not too high, the higher the aluminum powder content, the more powerful the explosives! ”

"KClO3 petroleum jelly explosives themselves can be fully oxidized without relying on air, and the reason why adding aluminum powder can increase the explosion power is because aluminum powder is extremely active at high temperatures, and can seize the oxygen in water and carbon dioxide, the reaction products of KClO3 and petroleum jelly, and release huge energy. The end product of both reactions is aluminum oxide, and the oxygen in it actually comes from KClO3, which means that once the number of moles of aluminum exceeds twice the number of moles of KClO3, it makes little sense to increase it. In this case, theoretically, the maximum content of aluminum powder should be", although Li Hui learned the overspeed algorithm when he was a child, but after all, he has not used it for a long time, in order to prevent mistakes, he still seriously took out a pen and paper to calculate the result, "The hydrocarbon ratio of Vaseline is not clear, let's set it to the molar number of 1:2, and then reduce the amount slightly when the actual configuration, anyway, even if KClO3 is slightly more, you can directly react with the aluminum powder, and you don't have to worry about waste." In this case, the optimal mass ratio of KClO3, petroleum jelly and aluminum powder is 122.5:14:54, which is 64.3%, 7.35% and 28.35% respectively in percentage terms. Mass production can't be so precise, so it's 64%, 7%, 29%. ”

However, as soon as it came to the actual preparation, Li Hui immediately found the problem, compared with KClO3 petroleum jelly explosives, this new formula because the content of petroleum jelly that doubles as a dispersant is too low, it is extremely difficult to mix evenly, and for three-base explosives, it is difficult to fully react if the mixing is uneven, and the explosion power will inevitably be greatly reduced.

In desperation, Li Hui could only reduce the proportion of aluminum powder, and after repeated tests, he finally found a balance point, on the basis of which the percentage was rounded up, and finally the formula was set at 72%/8%/20%. Because the name of KClO3 petroleum jelly aluminum powder explosives was too long and not conducive to secrecy, Li Hui named this new type of explosive with a silver-gray appearance as silver explosives

Because even military black powder has a large fluctuation in explosion power due to its quality and pressure density, it is not suitable as a reference for measuring the explosion power, and TNT, which has not yet been found to be used as explosives, cannot be bought in China at all, Li Hui had to spend a lot of money to buy some picric acid as a reference. After all, he knows the power coefficient of picric acid, so he can convert it when the time comes.

Relying on the 10,000 taels of silver experimental funds allocated to Li Hui by Li Hongzhang in advance and the personnel and equipment of the Tianjin Machinery Bureau, Li Hui had already made several classic experimental devices for testing the power of explosives

"Sure enough, it is right to add more aluminum powder, the power has reached 84% of picric acid, and the pressure density of silver medicine can almost reach 2 (g/cm3)! If calculated by the same volume, the explosive power of silver medicine is not much worse than picric acid, and the arson effect is even more complete, although picric acid has a good combustion effect, but after all, it is only an amateur, and aluminum powder is professional! And the safety of silver drug production is also much better than picric acid, although the flammability cannot be solved, but without a detonator, it only burns and does not explode, and it is generally safe. Wowhaha, little devil, I see how rampant you are this time! Li Hui was ecstatic with the test results, and unlike the previous success stories that simply copied history, this time Li Hui actively used his brain to make improvements, thus gaining an unprecedented sense of achievement.

However, Li Hui will not underestimate the military predecessors of the Eighth Route Army in history, they may not have thought of such a formula, maybe it was just that with the difficult conditions at that time, they really couldn't get so much aluminum powder, so they could only save a little use, right? In fact, if it weren't for the fact that the Beiyang Naval Division itself has a lot of funds and a perfect shooting watch that can save extra money, Li Hui would never dare to add so much aluminum powder to the explosives, it would be all silver!

For the sake of secrecy, Li Hui temporarily requisitioned an open space on Liugong Island as a testing ground, and because the area was not large enough, the live-fire test could only be conducted in the form of direct aiming, and the target distance was naturally not far away. Li Hui, who knew that it was powerful, closed his eyes without waiting for the cannon to sound, but the generals of the Beiyang Naval Division who came to watch were unprepared, and as a result, they were all dazzled by the dazzling white light emitted by the explosion of the cannonball, and scolded for a while