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There are many aircraft with very old qualifications in my country, such as the strong 5 attack aircraft that was retired in the past few years, and the first-teaching 6 trainer aircraft that is still in use. In terms of transport aircraft, , my country has a 5 transport aircraft that was copied from the former Soviet Union's An 2 transport aircraft, and it has become a temporary talk because it is re-sale to Russia. Many people may not know that the Y5 aircraft is a very strange aircraft and is also known as a difficult aircraft to crash, because in certain specific situations, it can fly backwards!
▲The museum's operation 5
After the end of World War II, in order to improve agricultural production efficiency, the Soviet Union needed to perform pesticide spraying and other operations in the air, so it planned to develop a small aircraft with slow speed and relatively reliable performance. At that time, the Antonov Design Bureau successfully designed the An2 transport aircraft. After the successful design of this aircraft, it became a special aircraft that the Soviet Union valued at that time, and there were a variety of improved models. The overall layout of the
An 2 transport aircraft is relatively backward, because the jet era had arrived in the late 1940s. Many countries were actively developing newer and more advanced jet aircraft. The An 2 developed by the Soviet Union not only used a piston engine, but also used a very ancient biwing design. Nowadays, the aircraft we see usually only have one pair of wings, and An2 actually uses two wings to increase lift. The main landing gear of
An 2 is in front, it is not retractable and has a small landing gear at the rear. The diameter of the main landing gear wheel is 0.8 meters and the width is 260 mm, and the diameter of the tail landing gear wheel is 470 mm and the width is 210 mm. The nose is relatively short and thick, and a 9-cylinder star engine is installed. The maximum power of this engine reaches 1,000 horsepower, which is enough for this small transport aircraft. The fuselage length of the
An2 transport aircraft is 12.7 meters and a height of 5.35 meters. The upper wingspan is 18.2 meters and the wing area is 71.6 square meters. Since the overall size of the aircraft is not large, its weight is not large, with an empty weight of only 3.27 tons and a maximum take-off weight of not large at 5.25 tons. From the basic data, we can see that the fuselage of this aircraft is very short, has a large wingspan, a large wing area, and is also very small in weight. In addition, the biwing layout, everyone who knows the aircraft knows that this aircraft must have some data that surprised us in its flight performance. This is the truth.
ordinary aircraft have a minimum flight speed and cannot be lower than this speed during flight, otherwise the aircraft will lose control. Pilots who often fly to the An2 transport aircraft said that the aircraft can be controlled at a speed of 48 kilometers per hour. In contrast, the minimum speed of the famous Senas light aircraft is about 80 kilometers per hour, which is much larger than the minimum speed of the An2 transport aircraft.
things are more interesting here. Of course, small aircraft cannot fly in hurricanes and tornados. If the airflow speed at high altitude exceeds 48 kilometers per hour, then if the An2 transport aircraft flies against the wind, use the ground as a reference system, it will be found that the An2 transport aircraft is flying upside down relative to the ground. In fact, when the ground wind speed is relatively high, the An2 transport aircraft can theoretically turn on the engine and hang it in the air in a stationary direction, because many electric vehicles can achieve the speed of 48 kilometers per hour. This is enough to prove that the maneuvering layout of the An2 transport aircraft is very unique. It is completely an old aircraft for low-altitude and low-speed flights, and this is actually a must-have skill for biplane aircraft. At the cost of
, the An2 transport aircraft is very slow. Since the aircraft's aerodynamic layout does not have the advantage and the engine's power is not large, its maximum flight speed is only 258 kilometers per hour. If all readers have friends in their family situations, they will definitely know that if cars such as BMW and Mercedes-Benz are lifting electronic speed limits, the maximum speed will reach or exceed 258 kilometers per hour.In fact, many domestic cars can easily reach speeds of more than 200 kilometers per hour. 258 kilometers per hour refers to its maximum flight speed, while its cruising speed is only about 190 kilometers per hour, which means that many speeding cars on the highway are faster than the cruising speed of this aircraft, so ordinary helicopters will catch up with this fixed-wing aircraft in the air.
In fact, this kind of thing really happened in the real war. During the Vietnam War, Vietnam used An2 transport aircraft to bomb the United States, but in fact, soldiers were just sitting inside the cabin and throwing grenades or other ammunition to the outside. However, during the flight, American helicopters discovered the An2 transport plane. They said that the plane's flight speed was too slow and their helicopter might catch up with the plane. At that time, the maximum flight speed of the UH1 series helicopter used in the United States was 220 kilometers per hour, and at full speed, he could barely catch up with the An2 transport aircraft that did not fly at full speed. The US soldiers in the helicopter cabin actually used the AK47 he picked up to shoot down the An2 transport plane, becoming the only fixed-wing aircraft in the world that was caught up by a helicopter and shot down with a rifle, which is also a very embarrassing result.
my country's imitation of the Y5 transport aircraft also had strange events during flight, such as the plane's engine malfunctioning during training, but the plane actually returned to the airport in a floating manner. In fact, it is precisely because the overall performance of the An2 transport aircraft is relatively reliable and the low-altitude and low-speed flight performance is relatively good, so it is in large quantities in many countries around the world. With the output of my country's Y5 aircraft, the total production of An2 may exceed 20,000 aircraft. Moreover, to this day, many countries and regions still use this seemingly ancient transport aircraft, some of which are civilians and military. The reason why Russia purchased my country's improved Y-5 aircraft in 2019 is because they lack the experience of improving this old aircraft. my country has produced this aircraft for decades and has a lot of experience, and can be purchased directly, and the efficiency is better.
In fact, many foreign aviation experts, including some people in China, have said that although the Y5 aircraft has nothing outstanding, it may fly in the world for 100 years with its reliability, and it can be called a living fossil in the aviation industry at present.
