PS: Thank you for the generous reward from the book friend "Wangyun Mountain People" again and the 2 monthly tickets ^_^ voted by the book friend "Sazabi".

The development of anti-aircraft missiles was carried out later, because the planes in the early days of World War II were too cheap, and missiles, as "high-tech" products, could not reduce the cost in a short period of time. However, after the appearance of the B-29 strategic bomber, which cost nearly a million dollars, the anti-aircraft missile had practical value, and because the ground-based radar guidance was easier to achieve, the technical difficulty was much smaller than that of the anti-ship missile, so although the project was established relatively late, it was almost successful at the same time as the anti-ship missile.

In addition to the "911 Project", China also made a lot of other scientific research achievements in 1946, but they were also concentrated in the military field. For example, the Chinese government agreed to sell the advanced J-2 high-subsonic jet fighter and teardrop-shaped submarines to Japan precisely because the country had developed better products

Due to the application of parallel engineering, as early as when the J-2 had just completed its first flight, the development of the supersonic jet fighter had been officially established, and the research on titanium alloy began earlier because the rocket was also needed, and the J-6 design drawings provided by Hu Weidong as a reference, so the supersonic jet fighter named "J-3" could be finalized and put into service in 1946, in fact, it was not too much beyond Hu Weidong's expectations.

However, if it were not for Wu Zhonghua's outstanding contribution to the jet engine, the successful development of the "J-3" would have been at least three years later, and this is the role of genius. It may not be possible to do it without them, but the time and money spent will certainly increase dramatically, especially when the quantity and quality of "talent" in China cannot meet its needs. It is no wonder that although Hu Weidong is quite critical of Wu Zhonghua's character, he has always taken special care of him.

The teardrop-shaped submarine is of epoch-making significance in the history of submarine development, but it also has a big flaw, that is, the speed of water navigation is too slow, which is easy to take advantage of by an enemy with rich anti-submarine experience, and it is for this reason that the German submarine forces are now no longer in the prestige of the past. In fact, the teardrop-shaped design is only used on nuclear-powered submarines that require little to no afloat or conventional submarines equipped with AIP (non-dependent air propulsion) systems. to be able to play the greatest role.

But here's the thing. Except for the United States, which has been incomparably strong in the post-war period in history, there is no second country in the world that can be so extravagant as to completely replace the role of conventional submarines with expensive nuclear submarines, and the development of the AIP system is also very technically difficult. So, someone later in history came up with a solution. The teardrop-shaped design has been adjusted to a certain extent. So that the submarine no longer looks like a water droplet. And more like a whale, this is the so-called "whale submarine".

Compared to the teardrop-shaped submarine, the whale-shaped submarine has a somewhat slower underwater speed. However, it is still faster than the merchant ship, so it does not affect its main combat mission -- breaking diplomatic relations, and the underwater speed of the drop-shaped submarine is also impossible to be faster than the surface speed of the combat ship, so the task that the drop-shaped submarine can perform can also be well completed by the whale-shaped submarine. However, the whale-shaped submarine has a much faster speed on the water than the drop-shaped submarine and can also surpass the merchant ship, which makes it able to float up to the surface to pursue the target if necessary, and is much more tactically flexible than the drop-shaped submarine

Hu Weidong, who is well aware of the defects of the drop-shaped submarine, began to secretly set up a project to study the whale-shaped submarine as early as the initial sea trial of the test model of the drop-shaped submarine, and finally entered service in 1946, and was named the "Ming" class, in addition to good sailing performance, this new submarine also applied the sound absorbing tile successfully independently developed by China for the first time and greatly reduced the noise, so that it still has the world's advanced level until the early 50s.

As for the guided torpedoes that the Germans once caused heavy losses to the Allies, because they had many defects and were still very immature in technology, they were only studied for the time being, and until the mid-50s, when the "Ming" class conventional submarines were decommissioned, they were not equipped with a large number of troops, and although the direct-sail torpedoes were backward, they were mature and reliable, and they made great contributions in history until the Falklands War, and they were enough to use the "Ming" class submarines during their service.

The whale-shaped submarine is very useful, but the greatest scientific and technological achievement in naval equipment in 1946 was the successful construction of the first domestic aircraft carrier. After learning the lessons of the initial trial production failure, this aircraft carrier has adopted more mature technology and technology, rather than blindly pursuing the advanced, and the full load displacement of 30,000 tons is also within the limits of China's shipbuilding capacity, especially the design capacity. However, this aircraft carrier, designed and built by Japanese designer Keiji Fukuda, is not inferior to the Essex-class aircraft carrier of the United States in terms of performance, which once again proves that the performance of weapons does not only depend on the advancement of technology, and Keiji Fukuda also proved through this aircraft carrier that he is not only capable of designing battleships, giving a resounding slap in the face to those guys in Japan who excluded him from the country at the beginning

It is worth mentioning that due to the early appearance of Chinese jets, the aircraft carrier named "Hunan" was deliberately lengthened to prepare for the jet aircraft on board, although this had a certain negative impact on the seaworthiness of the warship, but because China has not yet developed a catapult with satisfactory performance, it can only take this stupid method, considering the overwhelming advantage of jet aircraft over piston aircraft performance, such a change is still worth it.

In fact, before the British invented the steam catapult with practical value, the US Navy also adopted the same approach, but as the speed of jet aircraft became faster and faster, there was a limit to the flight deck of the aircraft carrier alone, so sooner or later the catapult would have to be needed. In terms of the current situation of the Chinese Navy, subsonic aircraft are fine, and if the supersonic ones want to be on board, the tonnage of the aircraft carrier will increase to exceed China's warship construction capacity, even if it is just a fighter, even if it is just a first-generation supersonic fighter with a maximum speed of J-3, which is only slightly faster than the speed of sound

Therefore, the research of catapults must be carried out, if according to common sense, the steam catapult used by the United States and Britain and other countries in history seems to be the first choice, but because the steam catapult has extremely high requirements for the industrial base, not to mention China, even the current Germany can not be built, and even the United States in the early 50s in history can only be produced after the introduction of British materials and technology, in these areas that require the so-called heritage, the old empire like Britain is still very advantageous (to be continued......