Just when Stuttenberg ran to the cabin like crazy, Bai Yi was leaning in front of the warm fireplace and carefully reading the letter in his hand, which he had just received yesterday afternoon, and then Bai Yi spent most of the night using an "encyclopedia" of the Republic of China period to re-decipher the letter written by Wu Yunzhe. Pen ~ fun ~ pavilion www.biquge.info

There is no way to use such a secret method of writing, after all, the reputation of the KGB for spying on the letters of others is simply famous all over the world, and it is necessary to mention some progress in the development of the two recoilless guns, and for the sake of safety, before leaving the country, it is stipulated that all correspondence should be written in cipher.

The specific operation method is simple, that is, use a reference book as a code book, use the number of strokes of the basic text, determine the number of pages, lines and columns of the code book where the required text is located, and so on, you can use the code book to make the real content, which sounds quite lofty, but it is very troublesome to do.

Take the most basic letter writing as an example, it can't be full of words that don't understand it, at least there must be a letter, otherwise even primary school students can see that there is a cat in this letter, but to write this secret letter like a real "letter", but also to meet the requirements of the code book, this is quite a test of the writer's writing skills.

Bai Yi didn't know the situation in China, anyway, every time he wrote, it took a lot of effort, so that it was not easy to decipher, especially long letters, it took a long time, at this moment Bai Yi was a typical long letter in his hands, it took Bai Yi most of the night, plus a morning to finally decipher.

The letter is mainly to Bai Yi to introduce the development of two types of recoilless artillery during this period, it turned out that after Bai Yi left, as the director of the R&D Planning Department of the Ministry of Ordnance Industry, Wu Yunzhe officially took over the development of the two types of recoilless artillery, thanks to the notes left by Bai Yi and the wide application of finite element analysis, the development progress is progressing rapidly.

When Bai Yi went to Siberia, the two recoilless guns had already entered the sample trial production stage, but it seemed that God deliberately did not want the recoilless artillery development team to be completed overnight, and the recoilless artillery project that entered the trial production stage seemed to have touched the ceiling, and it was no longer possible to buy one step earlier.

There is only one reason for this, and that is two words - ammunition!

Unlike other weapons and equipment, it is necessary to have relevant supporting ammunition first, and then plan the relevant launch system based on these ammunition, the recoilless artillery development team is just the opposite, it is the first to have a relevant launch system, and is developing matching ammunition.

The prototypes of the two recoilless guns he developed are classic weapons and equipment in the previous life, one is the Swedish classic equipment "Carl Gustaf" recoilless launch system, which is known as a Western RPG, and until the 21st century, people still don't know whether it is a recoilless gun or a bazooka.

And the other, the fame is even more outrageous, can be called a typical representative of the soul of a shot into the soul - RPG-7 rocket launcher, because the firing principle of the two types of equipment is based on the principle of recoilless artillery firing, so Bai Yi simply classified the two types of equipment as recoilless artillery for the time being, as for how to divide it in the future, that is after the development is completed, before that, in order to improve the efficiency of equipment research and development, Bai Yi is still good to be classified in one place.

It is based on the classic equipment of the two previous lives that Bai Yi will have no fear, after all, since the day he entered the military academy, these two pieces of equipment have frequently appeared in the textbooks, Bai Yi is also quite familiar with the technical characteristics of the two equipment, not to mention the remorse, so Bai Yi is not afraid of the embarrassing situation of the two recoilless guns with pipes and no bullets, because as long as he is a traverser with golden thighs, it is impossible at all!

In order to complete the goal as soon as possible, Bai Yi was transferred from the project team to Siberia, although Bai Yi wrote down all the ideas as much as possible before leaving, but the time was urgent, especially in terms of ammunition, there are many expressions that are not very detailed.

In this way, the recoilless artillery development team is like a toddler's little doll, suddenly losing the support of the handrail, and wrestling is inevitable, and the biggest twists and turns in this is the No. 2 recoilless artillery project born from the RPG-7, and the primary task of this equipment is to carry out anti-tank combat at the squad level.

Therefore, the relevant anti-tank ammunition is indispensable, but the problem is that China has no experience in the development of relevant ammunition before, although the samples and related drawings of several German iron fists of the Baiyun Plant have indeed played a certain reference significance after their research, but that is all.

For example, the internal medicine hood is known to be copper, but due to the lack of resources in Germany at the end of the war, in order to reduce the cost, a little alloy was added to the copper medicine cover; There is also the basic ingredient used in the shaped charge is "black gold", but it is not complete, and a lot of additives are added to help the shaped energy explosion, which cannot be solved at all with the reality of China; As for the propellant in the second half, it was too simple to meet the basic performance of the ammunition for the No. 2 recoilless gun.

All in all, the ammunition of the German "Iron Fist", except for the structure that gave the recoilless artillery development team a general direction, did not play a big role, and even in some respects disturbed the thinking of the members of the development team, so that this anti-tank ammunition could not be taken out for a long time.

In desperation, Wu Yunzhe could only write to Bai Yi, hoping that Bai Yi could think of a way, after all, the volunteer officers and soldiers on the Korean front line can be said to be looking forward to the stars and the moon for this kind of individual anti-tank equipment, especially after the third battle, the volunteer army that crossed the 38th parallel found that the terrain difference towards the north and south was so huge:

The north is densely mountainous, but the south is a flat river, and when fighting in the north, thanks to the restrictions of the lofty mountains, the mechanization of the US army cannot be expanded; However, south of the 38th parallel, the mechanized units of the US army can be said to be like fish in water, so they gallop across the flat field, hide far away if they can't hit the accelerator, and when the time is ripe, they will quickly return to the rifle with full horsepower.

Often at this time, the volunteers who relied on two feet had not yet withdrawn to a safe place, and they were bitten by the US tanks, and they had no choice but to use their flesh and blood to collide with the steel of the US army again and again, so that the casualties on the front line could be imagined, and because of this, the Volunteer Army Command urged the No. 2 recoilless gun several times to come out as soon as possible!

Bai Yi didn't expect this to happen, so he hurriedly planned two sets of plans and sent them back to China, but he didn't expect that although the plan broke through the bottleneck, it was still far from the original design plan......