Adaptive biomimetic non-smooth surface film with aerodynamic drag reduction

Abstract

The invention discloses a self-adaptive bionic non-smooth surface sticking film with pneumatic resistance reduction function. The self-adaptive bionic non-smooth surface sticking film comprises a basal body, a variable height non-smooth unit, a non-smooth unit carrier, an intracavity air pressure lifter, a vehicle speed collector and a controller; a plurality of openings are formed in the non-smooth unit carrier, and each opening is provided with a variable height non-smooth unit to be stuck to the non-smooth unit carrier in a sealing mode to form a convex package; and the edge of the non-smooth unit carrier is stuck to the edge of the basal body in a sealing mode, a closed air filling cavity is formed between the edge of the non-smooth unit carrier and the edge of the basal body, and the intracavity air pressure lifter is used for adjusting the air pressure of the air filling cavity. According to the self-adaptive bionic non-smooth surface sticking film with the pneumatic resistance reduction function, the film is stuck to the surfaces of a passenger car or a commercial vehicle or a high-speed train, the film can adjust the height of the convex package according to the real-time vehicle speed, and thus the air resistance coefficient of a vehicle body can be effectively lowered.

Description

technical field [0001] The invention relates to a flexible film for reducing the aerodynamic resistance of a product, in particular to an adaptive bionic non-smooth surface film with aerodynamic drag reduction function for high-speed passenger cars, commercial vehicles and high-speed trains. Background technique [0002] According to statistics from the Traffic Management Bureau of the Ministry of Public Security, as of the end of 2016, the number of motor vehicles in the country reached 290 million, including 194 million cars. [0003] Aerodynamic drag directly affects a car's power and fuel economy. As non-renewable energy sources such as oil, natural gas and coal are on the verge of depletion, and the number of automobiles continues to increase, reducing aerodynamic drag is increasingly important. [0004] Relevant data show that the vehicle speed V=60km / h, the aerodynamic resistance accounts for about 40% of the total resistance, and when V is close to 160km / h, the tota...

AI Technical Summary

Problems solved by technology

The research on reducing the aerodynamic drag coefficient from the shape design is very mature, and it is difficult to make a breakthrough

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