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All-metal aircraft? Moreover, it has changed the mainstream thinking of double wings and upper single wings, and adopted the standard lower single wing! The wing root part is covered with aluminum skin for a smooth transition.

Who exactly are the stowaways?

Cai Ye, who accompanied the inspection, was also stunned, Miao Luo kept thinking in his heart, how can metal fly? Tan Yanmin simply walked up, knocked on the skin to make sure it was metal, and then asked, "Yunhua, this is white iron?" ”

"It's not iron, it's alloy aluminum developed in Chongqing." Whether it is Ba Yuzao or Zhou Houkun, or the technicians and ordinary workers next to them, the more they see the surprised look, the more they can't help but crack the corners of their mouths happily, and introduce to everyone: "The main support structure is made of steel pipes, and the outer part is made of alloy aluminum, and we have also modified the shape of the fairing and wings, and the blowing experiment has also been done." ”

Looking at the excited two, Yang Qiu was also very happy, but his happiness was different from others. In fact, there is no plane in this world that can surprise him, and he is happy with the appearance and concept! Because if you just look at the photos, you will definitely think that this is a product after 1930.

All-metal aircraft are not new, as early as 1915 Juncker built the world's first all-metal aircraft, the J1 type, and the J2 the following year. The Rhineland plan also brought back a large amount of information on the development of all-metal aircraft in Germany. In addition to Germany, at the end of the European War, the French Breguet 14 was known as the first model in aviation history to enter mass production with metal as the main material of the fuselage because of the use of a large number of metal materials on the fuselage skeleton. In the same year, the Haidong Qingding type was also developed for the first time in the skeleton, nose engine compartment and fairing fairing. Moreover, according to Wu Qingdu's report, Wang Zhu and others also started the development of all-metal aircraft last year.

He is happy that there is a private enterprise like this. Some young people who spontaneously organized for their dreams, when their technology, capital and processing capacity are not as good as their opponents, adhere to the belief and determination to dream and create the future! They are the hope for the future of the country.

But it is not easy to send it into the sky and have good flight performance, and if you look at the engine next to it, you can see that they also encounter the problem of difficult problems for aviation designers all over the world, and the power performance is seriously lagging behind compared to the dream. Tan Yanmin didn't understand technology, he only felt that it was a little whimsical to let the heavy metal go to the sky. Asked: "Yunhua, can this fly?" ”

The European war stimulated the development and trend of all-metal aircraft, and Zhou Houkun, who had just returned, could feel this kind of poor craze the most. As the chief designer, his dream is to send a real all-metal fighter to the sky in front of foreign countries, and he is afraid that Yang Qiu will not know, and he specially explained: "There is no problem with flying." The main structure of the aircraft is Dura aluminum developed in Chongqing, which is much lighter than steel. We calculated. About 380 horsepower is enough to get it into the sky. But this horsepower is still too small, the flight performance after going to the sky will be relatively poor, and it cannot carry anything other than the pilot, and the fuel tank can only guarantee a flight of 100 kilometers. ”

Tan Yanmin suddenly realized and said, "No wonder I saw you tossing the engine as soon as I came in." ”

Ba Yuzao said: "The engine is the most important part of the aircraft, and the first important thing about the quality of the aircraft is the engine. It takes at least 550 horsepower to fly this plane, but now the engines in various countries are between 350 and 400, so we are going to build our own. ”

"By the way, what did the vice president mean by overheating?"

Tan Yanmin is a typical conservative official, and it is rare for Yang Qiu to be interested when he passes by Hunan to inspect. Walk up to the engine and take a closer look. The provincial governor asked Zhou Houkun to take the initiative to explain, and said: "Vice President, Governor Tan, look here." He pointed to the dense mille-shaped radiator on the engine cylinder and said, "This is the air radiator." ”

"During the flight, the cold wind blows here from the nose of the aircraft and takes away the heat from the heat sink. This eliminates the need for an additional recirculating cooling tank. But this heat dissipation method has high requirements for casting and precision machining! The entire engine and even the heat sink are first cast and formed as a whole, and then by hand grinding, acid milling and polishing, so the most skilled workers also need about 1,200 man-hours for each such engine. Our precision casting technology is not as good as that of Europe and the United States, so the working hours and cost are not as good as those abroad, and the quality is also unstable. At present, the world's best precision casting technology is in the United States and Germany, and there are 71 pieces of single cylinder heat sink in the United States. 70 pieces in Germany, China is generally around 55, and the heat dissipation and stability are only 8 percent of the two. Also because there are often defects such as sand holes in casting, the yield is only about 5 percent, but it can reach 7 percent in Europe and the United States.

Yang Qiu touched the heat sink on the cylinder with his hand, and secretly smiled bitterly in his heart. Is 71 tablets too much? Ten years later, the famous double wasp engine has 172 single-cylinder heat dissipation blades, and all of them are precision casting and molding at one time! This shows the extent to which the precision casting technology in the United States has reached. Moreover, precision casting is still one of the basic industries, from mold design to final pickling and polishing, the whole process has no special high-tech and materials, and it is completely a test of processing technology. Not to mention the paper-thin part of the heat sink, the appearance of sand hole bubbles and impurities alone can destroy thousands of worth of blanks.

This is also the main reason why the American Wasp engine can lead the world, many countries are finally stuck in the processing technology and material technology, which shows how important the basic industry is, and the industrial processing capacity is the real cornerstone of all new technologies! This is the main reason why he has worked hard to improve the basic industry from the beginning to the end, because even if he takes out the drawings, many things cannot be made by the current processing capacity. There is also the consideration of cultivating technical personnel to be innovative, especially when this all-aluminum aircraft appears, and they are more determined to be in their own ideas.

There is no shortage of innovative talents in China, and as more and more young people go abroad, high-end talents will continue to emerge. But when they come back to serve the country, dreaming of using their expertise and then turning them into duplicators, what a terrible sight it will be! The road of science, the results bring only joy, the real scenery is on the road, history has also proved that countless great inventions are on the journey, creating a master. So this incident also secretly reminded him. Non-essential key technologies should be used as little as possible, so as not to leave a century-old regret for the nation.

However, there are two key technologies that can be provided.

No, it should be said that it is the key idea.

Yang Qiu glanced at Kuang Xukun, and after asking Lei Meng and the guards to take the unrelated personnel to a distance, he sat in front of the plane with Miao Luo, stroked the skin and asked, "Have you ever thought about how long it will take to develop a new engine?" ”

A trace of embarrassment flashed across Ba Yuzao's face, and he really didn't think he would succeed in his heart. Don't look at the scale of the factory. There are also more than 200 employees up and down, but compared with foreign countries, the lack of background is too great. For now, Dula Aluminum is from Chongqing. The engine is also imitated from Chongqing, and the aerodynamic shape also uses some foreign technology, so there is nothing in the hands so far. What's more, the aviation industry is known as a money-burning industry in Europe and the United States. The vast majority of investment patrons are millionaires, and if it weren't for the European war, half of the world's aircraft factories would have closed their doors. A few years of savings and even the entrepreneurial funds supported by Yang Qiu are not much left, if it is not supported by OEM processing, I am afraid it has fallen apart.

But he couldn't admit defeat easily, so he gritted his teeth and said: "At least three years, at most five years, I think we can make a breakthrough." ”

"Five years is not a long time, but have you considered it, you still don't have your own products, how many talents can be retained by the profits of OEM processing? You said it yourself. Each engine costs thousands, how many will be scrapped in five years? ”

Yang Qiu's words made the two of them face stiff, and they secretly screamed in their hearts, is it really going to be wasted? Miao Luo, who was sitting next to him, looked at the two of them sadly and said, "Chenhua, why don't you let my brother invest in research together?" ”

Yang Qiu smiled and patted her hands. said with a smile: "As the saying goes, disaster relief does not help the poor, and this is also the case for engaging in industry." Even if you borrow money or find someone to invest to tide over the difficulties, but what about the future? Products need to be constantly upgraded, and true industrialists will not stop the pursuit of technology. The new must be new, and the good must be good, and only in this way can we promote technological revolution and progress. How much money is involved? Cai Ye listened to the side and nodded secretly. These words broke through what the vast majority of enterprises in the Republic of China lacked the most.

Technology reinvested!

The spring breeze of the European war has made tens of thousands of factories and workshops across the country, but there are very few of them with technical content, and the industrialists who have made money often buy mature machinery and equipment to expand production in pursuit of greater interests, but ignore the importance of technological upgrading. On the contrary, foreign countries attach great importance to it, and just one of the simplest spinning machines has been changed and changed in order to increase efficiency, and it has not been interrupted until now. In order to engage in industry, we cannot only rely on state-owned enterprises and a few group companies of Yang Qiu, and only when industrialists like Ba Yuzao emerge and become the backbone can we truly become an industrial country.

However, there are very few people who realize this, and even those who are actively engaged in technological innovation are unable to maintain their business and investment in technology due to the limitations of capital, technology, and heritage, which will inevitably undermine their confidence in starting a business and investing in technology in the long run. Yang Qiu came out this time to investigate the survival of these small enterprises and prepare for the next round of industrial reform. He continued: "Your problem is being too confident! If I'm guessing correctly, co-packing can only sustain the daily expenses of the factory, right? Remember! The survival of the factory is the most important thing, and even if Juncker, which built its first metal airplane, specializes in its own brand of water heaters, it can get enough profits to subsidize the consumption of technology investment. ”

"What I just said may be a little heavier, but I still hope that you will work hard, technology must be grasped, this is the key to future development, and money must be actively earned! Two legs to walk steadily. After Yang Qiu finished speaking, he got up and patted the plane, and said with a smile: "Don't keep your face calm, it just so happens that I have thought of two ways that may be able to help you." ”

His words shook the two of them like the sound of a morning drum. The technological revolution is not achieved overnight, it requires a lot of investment and years of experimentation, so it is true that the problem of survival needs to be solved first, otherwise it is estimated that it will not be developed by starvation. Especially Zhou Houkun, this plane can be said to have poured all his efforts into it, otherwise with his ability, he would have been able to go abroad to enjoy a high salary. He was very grateful to Yang Qiudao for breaking the defects and said, "Vice President, please speak." ”

Yang Qiu walked to the engine, made a closing gesture, took out the concept of double wasps 10 years in advance, and said: "Since the engine made in Chongqing is 9 cylinders with 350 horsepower, why don't you increase the number of cylinders?" ”

Ba Yuzao was about to say that it would be twice as difficult to add a cylinder, but Yang Qiu had already continued: "Have you thought about it? If you could stack two engines back-to-back to form a double-layer 18-cylinder, wouldn't that increase horsepower a lot? There are also propellers, I have heard some foreign friends say that they are developing three-blade and four-blade propellers, and there have been some results, and the efficiency is much higher than that of double-bladed propellers. You might as well give it a try. ”

Two engines stacked back to back?!

Zhou Houkun's eyes lit up, he didn't think about adding cylinders, but each additional cylinder was twice as difficult to manufacture. If you increase it to 11 cylinders, it will be 5 times more difficult to build! The existing processing level, all of a sudden to improve such a big difficulty, the quality must not be a spectrum. But if the two engines are stacked back-to-back, it is technically achievable, and the existing technology that has been initially matured in Chongqing can be used. Even if the self-weight is removed, mutual interference to offset part of the power loss, at least 600 horsepower, waiting for a few years of processing and material technology to improve, wouldn't the future be better?

As for increasing the number of propeller blades, it opened another window for the two, they had long heard that some people abroad were developing three-blade blades, but there was no data on whether the efficiency increased, so they still chose the traditional double-bladed propeller for the sake of safety.

Seeing that the two of them had finally figured it out, Yang Qiu also laughed. Turning his head, he asked, "Songpo." Is the contract finalized for the procurement of patrol aircraft for the National Guard? ”

"Not yet, the bidding will be held in half a year."

Yang Qiu glanced at the two of them and deliberately reminded: "Songpo, you can take care of it when you go back." Patrol planes don't need to be too advanced in technology, and machine guns don't need to be too good for the time being. The main thing is that the range and observation window should have a wide field of vision, two engines, and the belly position would be best if two more observer positions could be added. ”

Ba Yuzao and Zhou Houkun are both smart people, and such an obvious hint is to tell them to fight for this batch of patrol aircraft contracts to feed the factory first. The existing twin-engine transport aircraft technology has matured, and it is not difficult for the two of them to modify and build a special patrol aircraft according to this requirement, so they hurriedly thanked: "Thank you, Vice President." ”

Yang Qiu pointed to the plane and smiled: "Don't thank me yet." Back-to-back overlapping isn't that simple either. The multi-bladed propeller will be enough for you to work for four or five years just by optimizing the shape and calculating the curve, so be sure to let me know when it actually goes up in the future. When he said this, he was actually prepared in his heart, in case he still couldn't develop it in the end, he would take out the drawings and copy them directly, after all, these two technologies are too critical.

The two also knew that he was not exaggerating, and nodded their heads in thanks, in fact, it did take five years for the twin wasp engine to mature, and the four-bladed symmetrical propeller did not complete the design optimization until 1928.

A few people laughed and chatted a few more words, and Yang Qiu also took care of the Ministry of Industry to support them with a batch of new equipment before pulling Miao Luo back. Tan Yanmin laughed side by side: "There are still many ways for the vice president, if the order for hundreds of planes is won, I am afraid that their plane will be able to go to the sky." ”

"yes." Cai Ye also said: "The construction of industry does not rely on the state alone, and the industrial development of Europe and the United States mainly depends on small private enterprises, and we have not paid enough attention to this aspect." I think that legislation should be adopted to adopt a reward system for them, and the orders of the government and the army should also be appropriately tilted, and a hundred flowers blooming is the prosperous age, and the growth of the country alone is not a blessing for the country in the long run. ”

Yang Qiu agreed with him. Like the military, industrial construction has also reached a time of comprehensive transformation, and it is necessary to take advantage of this period of peace to intensify efforts to encourage private and joint ventures, improve the industrial and commercial system, and promote patent protection and technological progress, which is also an important topic of the upcoming Chongqing Economic Conference.

The three of them chatted as they walked, and it was in this chat that the second round of business stimulus gradually surfaced.

After Yang Qiu inspected the industrial construction of Hunan, he revealed the concept of the double wasp engine in advance, and finally took Miao Luo to Chongqing to participate in the first national economic conference after the five-year plan. The new commander-in-chief of the National Guard's Outer Xing'an Mountains Defense Area, Wang Geng, director of the Hailanpao Civil Affairs Bureau, also took two nationally named guard brigades to officially enter Hailanpao from Harbin.

Although it was a lightly armed guard, since after the "Shanghai Communiqué" Europe and the United States recognized that this place belonged to Chinese territory, Yang Qiu instigated Nanjing to unilaterally cancel all unequal treaties, and Japan's defeat again intensified the momentum of China's domination of the Northeast, so Shumyatsky already felt that his life in the Far East First Division would become more and more difficult.

In the middle reaches of the Lena River, where the snow melts, there is a small town that pans for gold. This is Yakutsk, the base of the poor party in the Far East. This former emigrant town is now crowded with soldiers and poor supporters from all over the Far East, and with the influx of Han immigrants into the northeast and the former Russian region of the Khing'an Mountains, most of the Russians who can afford it have emigrated, and the rest are worried about what the future holds, which brings a good opportunity for the guerrillas to grow.

Ren Fuchen carried a gun on his back and walked towards the conscription office with dozens of compatriots who had come to defect. Most of these people who fled from China were bearded soldiers who were almost killed by Yue Peng and Zhang Zuolin back then, and they were used to being lazy, even if they had good policies, they were too lazy to do it. There are also the young Mongolian people who have been instigated, and they came here because Jebtsundamba was killed in an unknown way, which makes many people believe that it was the hands and feet of the Wehrmacht, especially since the recent redivision of Mongolia by the National Assembly and the division of the steppe into three provinces has caused more dissatisfaction among radical Mongolian young people.

But as soon as he reached the door, several Russian soldiers standing guard stopped him with guns: "Stop! ”

Ren Fuchen's face changed slightly, and after the Shanghai Communique, the Russian and Mongolian soldiers in the guerrillas did not trust them very much, and there were frequent conflicts. He said in Russian: "I'm Ren Fuchen, and I'm here to bring them to sign up." ”

"Sign up to be a spy?"

"Haha."

The leader of the squad waved his hand and said impatiently: "The political commissar has an order, no one is allowed to approach during the meeting, especially you!" ”…… (To be continued.) If you like this work, you are welcome to come to the starting point (qidian) to vote for recommendation, monthly pass, your support, is my biggest motivation. )