Xin chào đọc giả. Hôm nay, mình xin chia sẽ về Hai Người Nông Dân Chế Tạo Máy Bay Ở Tây Ninh, Nông Dân Việt Chế Tạo Máy Bay Trực Thăng Gây S bằng nội dung Hai Người Nông Dân Chế Tạo Máy Bay Ở Tây Ninh, Nông Dân Việt Chế Tạo Máy Bay Trực Thăng Gây S
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For nearly 10 years, Tran Quoc Hai and Le Van Danh, two farmers in Tay Ninh, have been tinkering with research and manufacturing helicopters. After F1, then F2, they surprised many scientists and were surprised and admired. Unfortunately, flying on a helicopter designed by the two farmers is still just a dream because no authorities have allowed them to experiment.
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|Le Van Danh and Tran Quoc Hai in front of the new helicopter.|
In February 2004, the event that the helicopter of two farmers Tran Quoc Hai (Suoi Dau commune, Tan Chau) and Le Van Danh, (Long Hoa commune, Hoa Thanh, Tay Ninh) was banned from testing and temporarily seized was received. attracted a lot of attention from both scientists and enthusiastic ordinary people. Heavily demanding, all compliments and criticisms, even doubts and derision, Hai and Danh silently accepted. Both decided to forget about the old helicopter to start building a second plane. Only technical perfection and superiority can help them give a complete and convincing explanation to answer the public opinion, which is heavy on suspicion and prefers sensational rumors to criticism. seriously. There have been up to 13 ministries, branches, dozens of scientists both at home and abroad and hundreds of curious people whose only purpose is to satisfy their curiosity to come to Suoi Dau to see with their own eyes, touching the aircraft works of Danh and Hai. Each visitor had an incongruous opinion. The most notable are some of the opinions of foreign aircraft experts. Someone said: “Of course you can fly, but if you build a new plane and show an old plane, it won’t do anything, buy it cheaper”. Simple mechanical workshop – the place where 2 aircraft Hai and Danh were built. In the previous plane, due to the installation of the engine lying down, while the propeller was on the top, Hai spent a lot of effort to make more cumbersome transmission details. To overcome, Le Van Danh asked his friends to buy a whole 250-horsepower Kawasaki speedboat from Thailand so that Hai could improve and build a new aircraft with a vertical engine system, significantly reducing the details. auxiliary drive. For cooling, Hai applies the principle of water cooling, simulating the cooling principle of the Isuzu engine. In the world, so far, there are only two companies Kawasaki (Japan) and Lycomin (USA) making engines. standing machines, the rest are using lying machines. “Vietnam is the third country,” Hai said proudly. Hai’s new aircraft engine was fitted with a misting system, adding some additives to Remifor oil (bad oil) instead of using gasoline or Diesel. (high-pressure fuels) to reduce the compression ratio to 9-15kg/cm2, which means a significant reduction in vibrations. Their innovation has truly created a “revolution” for the new aircraft. Each hour of idling it only uses 6 liters of Remifor oil instead of 60 liters of gasoline like the first aircraft, fuel costs are reduced up to 12 times. To prevent vibration, with the F2, Hai changed the tail of the aircraft to anti-air turbulence, and at the same time changed the propeller from two wings to three wings. New improvements have helped the F2 reduce from 350 rpm to 250 rpm in the same load capacity, reducing vibrations significantly. The most difficult is the propeller shaft. Many people who come to visit think that “two “barefoot engineers” only draw stories, the pinwheels must be made of platinum, where do these two fortune-telling come from?” In response, both Hai and Danh widened their eyes. : “Don’t read books, just superstitious! Near the Cu Chi overpass, for decades now there is still a HU1H (a large and modern American combat helicopter) thrown around. Platinum is more expensive than gold, just Only an idiot throws away tens of kilograms at a time.” To prove that the “white gold” incident is just a rumor, a legend, Hai Ri tried to find a real propeller shaft of a helicopter. The old American saw, brought back the saw, and tested the hole by hanging to measure the strength. Then, Hai let the lathe run automatically to turn this pinwheel and press the timer to measure the wear. After getting the correct parameters, Hai and Danh just went to Ho Chi Minh City and ordered the mechanical processing of their propeller shafts according to the “right deck” specifications. : “What can foreigners do, Vi Nam can do that, the main thing is whether you dare to think or not. If you don’t dare, say you don’t dare, just blow it up, mythologize technical stories, they laugh at each other!”. Similarly, with the F1, some technical scouts of the Ministry of Defense after watching it. Reviewer commented: “Very good, it can only fly 100m high. If you go higher, the air pressure will cause the helicopter to crumble.” They believe that, to bear the force, aircraft aluminum must be a special type of Duyra aluminum, very high hardness but light. Tran Quoc Hai refused: “It’s not good to say that, the higher you go, the less pressure you have. Russian aircraft in the 40s of the last century only had wooden frames covered with aluminum, covered with canvas still fluttering as usual, what’s more, my plane has steel ribs and composite shells? However, Hai and Danh are still not subjective. When building the F2, they decided to replace the square steel frame with a round steel frame, significantly increasing the strength. As for aluminum for aircraft shells, looking for eyestrain, he still couldn’t see where the special point was. Just as he was sewing, an old foundr he didn’t know suddenly came to him. He said: “Duyra contains a lot of Magne, heated it will fly like fireworks. Vietnamese technology cannot do this. I once sawed off an entire helicopter and put it in a melting furnace, and I didn’t see any dust coming out, proving that the plane is also made of ordinary aluminum.” Turns out, in the plane, there are only wheels. The car and the wheel are made of Duyra, the rest are made of aluminum. The road was drawn by the strategist, Hai and Danh were so happy, they went to find the old plane’s shells and bones, sawed, cooked, and sent it away by droppings. determined to find the composition of the real so-called “aircraft aluminum”.Finally, the secret was revealed that left everyone interested: it was just a manufactured aluminum alloy. according to the formula 2 times of steel for pistons plus 8 times of aluminum… beer cans, adding a few other additives are… standard.
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The hardness and bearing capacity of ordinary aluminum are increased by pressing and pressing many times with high technology, that’s all. In July 2005, when the F2 helicopter was basically completed, Mr. Hubert Mouret, a French aircraft expert, Project Manager of Emerraude Classic Cruises C/O Arche Type Vietnam came to the site to learn about the project. . As an expert with many years of flying Sud Alouette III combat helicopters in the French army, Mr. Mouret bluntly pointed out the defects in the F2’s mechanically controlled steering system. Criticized, Hai and Danh were not proud of themselves but “happy to wake up”, their hearts were immediately obeyed. Both decided to immediately remove the old steering system to start over. Instead of using the mechanical system, when there is an unexpected situation, the pilot takes time to unlock the mechanical lock to pull the lever, they change to a hydraulic steering system, the oil line is directed to the circulation. and has an automatic opening and closing valve, making it convenient and comfortable for the pilot because there is less to do, thanks to holding and steering, it is completely automated.–PageBreak–After exactly 2 years of diligent research, costs about 300 million more, the second plane is considered complete. One more small improvement: the cabin glass was replaced by a bearing sheet of mica worth 700 USD bought by Hai and Danh themselves, bending and posing made the F2 look brighter, the design is very “spoof”. After sitting in the cabin for a test run, an expert of BELL, America’s leading helicopter company, confirmed: “It’s okay. Just pay attention to the lubrication system”. This, the manufacturer Tran Quoc Hai does not worry, because he has conducted no-load testing on the rig very carefully without any small problems. Another team of experts from the Polish Academy of Sciences, after carefully examining all the parts, also confirmed: The F2 fully meets the flight performance. Technical details such as lifting and steering choke assemblies, steering levers, tilt control units all meet high and modern technical standards. They expressed surprise, unable to understand how such advanced and modern technical requirements could be neatly solved without the need for a large-scale manufacturing laboratory other than a mechanical workshop. The air is narrow, messy, slick with grease and only a few old lathe welding machines of Tran Quoc Hai. When interviewed by the film crew of the German News Agency, Hai and Danh could only shake their heads and laugh. They know how to make the whole helicopter, but how can they do it… they don’t know! Near the full moon of January, we visited, Hai and Danh said, until now, they are still struggling to know who, which agency is authorized to allow them to fly test (by anchoring method) Sicorsky strings). Both have sent applications to many places but still no reply. Impatiently, asking on the spot, every agency shook its head and said it did not have the authority to deal with it. At the end of December 2005, a group of scientists visited by Dr. Ha Phuc Mich, Vice Chairman of the Central Committee of the Vietnam Farmers’ Union. Dr. Ha Phuc Mich commented on a sentence that Hai and Danh were very interested in: “Up to now, aircraft manufacturing is no longer a matter of high technology, nor low technology, but a matter of appropriate technology”. He suggested that the Association would help them with the formalities. Full of hope, Hai and Danh compiled their dossiers and sent them immediately, but they waited a long time to receive no reply. Next to us, they could not hide their impatience and frustration, Hai said: “A few American scientists told me to , 60% of the scientific discoveries that help America develop are of ordinary people barefoot. I think it’s the same in my country. It is necessary to value all creativity, including the creativity of workers and workers without qualifications. The state has greatly supported the scientific world, how can it be neglected with the creative ability of the workers? Their question, I can’t answer, nor am I authorized to answer. Just imagine a huge waste lying right in the attitude of indifference. In the process of modernizing the country, it seems that we are overemphasizing imported modern technologies, while wasting too much of our internal resources. There is still an unfair, lack of incentives for the inventions of people without degrees. From time immemorial, there have also been inventions of scientists who have not experienced the university environment such as Edison, Bill Gate of the United States … Le Van Danh bitterly: “People think that airplanes must fly in the sky. , saw the plane parked in our yard, they couldn’t stand it, so they said it was not an airplane!”. Not only not encouraging, not helping, some unbiased comments from both the scientific world and the press can easily cause insiders to feel discouraged. A scientific officer, after reviewing all kinds of tests, said in the newspaper an irrelevant statement that the aircraft’s lubricant was not safe enough. Another official of the Department of Science, Technology and Environment of Tay Ninh province pointed to a sketchy review and immediately said: “This steel cannot bear the force”. Annoyed, Tran Quoc Hai “exploded” all the time: “If you can’t, you can’t do what? Hardness, features or size, you tell me to try?”. Panicked, this officer then scoffed: “Well, you just do as you want!”. Worse still, with the F1 plane, a newspaper even made an extremely idle comment, that Tran Quoc Hai and Le Van Danh built the plane but created a… chicken coop! I asked: “Are you sure the F2 will fly smoothly?” Both Hai and Danh were cautiously assertive: “If we can’t fly, maybe we spent nearly ten years making some toys. But, to confirm, you have to test it. All answers of science must be experienced through experiment!”.There was a time when too discouraged, refused to sell 2 planes at the same price as the Provincial Museum and the Vietnam Military History Museum. , two farm engineers intended to dig graves and bury both planes in the ground as a rite of passage for their passion and enthusiasm, just as the Wright brothers did a century ago with the drone. The first flight of mankind. But then thinking back, they still believe that they are living in a more civilized age than the ancestors of the aircraft industry by hundreds of years, so they stop, continue to wait and hope. Definitely, there will be a day when their helicopter can fly, test and fly. And then, they plan to ask ANTG Newspaper to auction these two helicopters. All proceeds will be used to build houses of gratitude for the poor
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