The sales of treasury bonds are very smooth, although they are a little unsalable at the beginning, after all, everyone will have some doubts about new things, and there will be a wait-and-see time, but with the development of propaganda, the people of the Dawen Empire have gradually accepted the new thing of national bonds, and the 10 billion treasury bonds have been sold out within half a month. Pen, fun, and www.biquge.info

In the past half a month, Li Rujin has not been idle at all, Li Rujin has to design R&D directions and R&D ideas for the five R&D centers, even if Li Rujin has fused the souls of two people and has a strong memory, he is also busy and anxious, and his eyes are red and bloodshot.

The whole person has lost more than a dozen pounds in the past half a month, with an unkempt appearance, and walking out of the door is more like a madman than a beautiful teenager. Hard work will eventually pay off, Li Rujin looked at the neat six R&D plans on the table, and felt an inexplicable sense of relief in his heart, each of which condensed a lot of his hard work and his almost sleepless hardships.

These research plans are not completely copied from the earth in the previous life, the scientific and technological level of this era is very different from the scientific and technological level of the previous life, but there is a much higher level than the level of the previous life during World War II, copying the advanced tanks on the earth, the scientific and technological level of this world cannot be built, copying the tanks of the World War II period, and many advanced technologies in this era cannot be used, resulting in a waste of technology. Li Rujin is not entangled.

After repeated consideration, Li Rujin once made a bold decision to design a tank by himself, fully combining the tank manufacturing experience of his previous life, and then using the leading technology of this era to give full play to the advantages of both time and space.

Li Rujin had no recruitment, so he had to choose the best of the best, and went through the various tanks from the World War II period to the seventies and eighties in his previous life, and chose a tank as the base plate for transformation. The Leopard tank, excellent, and excellent, but had to be abandoned, with a size of more than fifty tons, belonging to heavy tanks, did not have a suitable engine. Li Rujin had no choice but to drool, endure the pain, and give up the leopard pose.

In the end, Li Rujin chose the T34 tank of the former Soviet Union as the base plate, and carried out technological reforms in line with the scientific and technological level of this era. Like composite armor and ceramic armor, this world does not have it, but the technological level of this world can be completely produced, and mass production can be realized.

The manufacture of tank barrels has good manufacturing technology in this world, but there is no electroslag remelting technology and self-tightening technology of the barrel, and these technologies can be replicated in this world.

There are many other technologies, as long as they can be copied, Li Rujin has copied them all, from the tank's shells to the suspension system, from the design of the turret to the selection of the load-bearing wheels, even if they are not used now, they can also be used as technical reserves.

After careful selection and repeated comparisons, Li Rujin finally pieced together this tank, it was really pieced together, the chassis was T34, but it was re-refitted, the length did not change, but the width was widened by 40 cm.

The turret is a trapezoidal turret, which increases the inclination of the inclined armor, and the volume is much larger than the original turret, which increases the space for personnel to move around, and also increases the amount of ammunition, and the barrel is made of the world's 95 caliber barrel, and an exhaust device is installed.

The overall design can be said to be a very good tank from the perspective of paper data, and the three major elements of the tank, armor, firepower, and speed, Li Rujin has also made detailed considerations, but the real actual situation has to wait for the prototype to be produced, tested, and then improved.

The design of armored vehicles and rocket artillery is much simpler, armored vehicles are directly modified with military trucks of this world, and rocket artillery is copied from the Katyusha rocket artillery of the previous life and modified.

The navy is dominated by small ships, such as frigates, offshore destroyers, and submarines, and submarines are the top priority of the navy, which is the main means of attack of the Dawen Imperial Navy in the near future, submarines, Li Rujin chose the German U-shaped submarine, and with the world's advanced power technology and the previous earth AIP engine technology, greatly increasing the endurance and survivability, the torpedo chose a torpedo tube of 533 mm caliber, with a design range of 60 kilometers and a speed of 45 knots. All-electrically propelled direct-sailing torpedo.

As for the development of large surface ships in the Navy, Li Rujin is still hesitating, whether he needs to develop battleships or directly develop aircraft carriers? Mentally speaking, Li Rujin wanted to develop a few battleships, but intellectually told Li Rujin to skip the battleships and start directly with a small aircraft carrier.

With aircraft carriers, battleships are basically targets. During World War II in the previous life, whether it was Germany or Japan, whether it was Bisman or Yamato, they all died directly or indirectly at the hands of aircraft carriers. After thinking about it, Li Rujin still decided to give up the development of battleships and start directly with small aircraft carriers, but all this is a matter for later.

The Air Force mainly focuses on armed helicopters, and at the same time speeds up the research and development of fuel engines, especially jet engines.

The research and development of the engine is still based on the V2 series diesel engine of the former Soviet Union, and strives to develop a high-power engine that can be used in tanks as soon as possible.

The research and development of communication equipment, with wireless communication as the main research and development direction, strive to develop a large power, small size, wide range of communication equipment, at the same time, the battlefield signal jammer, shielding device is also within the scope of research and development.

In the previous life, this kind of weapon was not developed for a long time, but its appearance changed the concept of time and space of conventional warfare in the past, increased the suddenness and destructiveness of war, expanded the scale and scope, and accelerated the process of war.

Since the emergence of missiles at the end of World War II, to the 21 st century, the development of missiles can be said to be ever-changing, with a wide variety of types, from the flight mode into ballistic missiles and cruise missiles, from the combat mission into strategic missiles and tactical missiles, from the launch point and the target can be divided into ground-to-ground, surface-to-air, surface-to-ship, and air-to-surface, air-to-air, and so on.

In terms of size, there are anti-tank missiles of the shoulder-resistant type that are several tens of centimeters long, and there are also intercontinental missiles of the giant type that are several tens of meters long, a very large family of missiles, and its appearance has brought about a tremendous and far-reaching impact on the strategy and tactics of modern warfare.