HS code-based re-exports in free zones

Aerodynamic engine: more efficient propulsion mode With the increasing use of aircraft,HS code-based re-exports in free zones people's requirements for the performance and efficiency of aircraft are also getting higher and higher. In the aviation industry, the way of propulsion is an important indicator affecting efficiency. In the past, engines basically used the heat energy generated by the combustion of fuel to push the impeller to achieve the propulsion effect. However, this method has some problems in terms of efficiency and environmental protection. With the rapid development of science and technology, aerodynamic engines have become a more efficient and environmentally friendly driving method and are gradually applied in the aviation industry. I. Advantages of aerodynamic engines 1. High efficiency: Because the aviation industry often involves long-distance flights, power efficiency and range efficiency are very important.Compared with ordinary engines, pneumatic engines do not need to burn fuel and do not produce soot and exhaust gas, so they are not only more efficient, but also more environmentally friendly. Two. Stability: The interior of the air-powered engine adopts a magnetic levitation and toothless and oil-free design, which ensures the stability of the engine under high-pressure and high-speed conditions, and its noise is relatively low, which will not cause too much noise pollution to the ground community. 3. Low maintenance cost: There are no parts inside the engine that need to be replaced, and no fuel or lubricating oil are required. Once installed on the aircraft, it can be operated for a long time, which greatly reduces maintenance costs. II. Practical application of pneumatic engines. International airlines have begun to use aerodynamic engines, including ANA in Japan, Boeing in the United States, and Bombardier in Canada.For example, in 2015, the fuel efficiency of the Boeing 787 was 20% higher than that of previous aircraft. This is because the engine of the 787 adopts the second-generation air-powered engine with high canalve ratio, which can significantly improve the range of the aircraft and reduce the cost of use. In addition, European Airlines announced in June that it had produced air-powered engines for aircraft after 2020, which are expected to be 25% more efficient than the current one. III. The future development of aerodynamic engines. The efficiency of pneumatic engines is incomparable to that of current engines, but there are also some areas that need to be improved in this kind of engine. 1. Generate more electricity: Although the model can be light and optimized to reduce taxiing and drag, the aerodynamic engine will still consume the company's electricity. Need to be in the engineInstall solar panels or other energy sources so that the generated electricity can be self-charged for electrical appliances such as Wi-Fi or video. Two. Improvement of the heating system: Now, airlines need to heat the engine before take-off according to the climate, so that the engine does not freeze when operating at high altitude. However, the heating engine is very power-consuming. In winter and cold areas, increase the self-heating function that may be damaged to reduce the power consumption of the heating engine. 3. Improve the life of the engine: Because the high-speed operation of the engine will lead to wear and corrosion problems, the life of the engine has become a key challenge. In order to solve this problem, it is necessary to improve the life of the engine by researching better materials, improving the protective layer on the outside of the engine, and adopting more intelligent maintenance methods. In a word, as a new generationWith the advantages of high efficiency, stability and environmental protection, aerodynamic engines are gradually being applied in the aviation industry. Although there are still some problems that need to be solved, with the continuous progress of technology and the continuous attempts of aviation enterprises, it is believed that aerodynamic engines will have a wider application prospect.

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