Wu Dajing's "Chinese God of War Sun Dasheng" helmet is eye-catching, and these sports equipment are "more useful in the middle"

China's Wu Dajing (left) competes in a match on Feb. 11. Photo by Xinhua News Agency reporter Ma Ning

On the evening of February 11, in the men's 500m preliminary round of short track speed skating at the Beijing Winter Olympics, China's Ren Ziwei and Wu Dajing both advanced as the first in their group, and another Chinese player, Sun Long, was sentenced to advance for fouling by his opponent.

In the subsequent short track speed skating men's 5000m relay semifinals, the Chinese team composed of Wu Dajing, Ren Ziwei, Sun Long and Li Wenlong played in the first group, and Li Wenlong accidentally fell off the ice in the final stage of the competition, and the referee watched the video replay and was awarded to the final.

During the competition, the helmet worn by Wu Dajing was commented by netizens as "full of national style and domineering". It is reported that Wu Dajing's helmet is named "Sun Dasheng, the God of War of China", and the design pattern appears in the majestic Qitian Great Saint Sun Wukong in "Journey to the West", which is very eye-catching.

The innovation of sports equipment for events is nothing less than a tiger for excellent athletes. Especially in winter sports, the excellent results achieved by athletes are inseparable from the "blessing" of advanced equipment. In order to help athletes give full play to their strengths, the Beijing Winter Olympics have invested a lot of scientific research in sports equipment.

Many of the winter Olympic games are dangerous, and sports equipment should play a key protective role for athletes.

Liu Li, professor of the School of Fashion Art and Engineering of Beijing Institute of Fashion and director of the National Winter Sports Clothing Equipment Research and Development Center, introduced that alpine skiing, big jumping and other projects, because of the rules of the event, athletes are often affected by some foreign objects. Therefore, the team led by him developed special anti-collision equipment for them. This equipment is suitable for materials that are still active in low temperatures. According to the special structural design, the external force can be effectively decomposed to protect the athletes.

Cutting protection mainly serves short-track speed skating projects. At present, the team led by him uses high-strength and high-film materials to prepare, and uses the weaving method and knitting method to improve its comprehensive anti-cutting ability, which is currently better than the international cutting capacity of 20% to 30%, which can effectively protect our athletes.

Professor Wang Jiadao, director of the Department of Mechanical Engineering at Tsinghua University, said that helmets not only play a protective role for athletes, but also need to have the function of reducing resistance, and athletes' helmets have also designed some microstructures in addition to aerodynamic shapes, which are very important for drag reduction.

There are two main categories of winter sports, one is ice sports and the other is snow sports. Because the medium is different, the frictional resistance from the ground is different, and the way of reducing the resistance is also different.

Wang Jiadao introduced that in order to take into account the reduction of friction resistance and increase the forward momentum when pedaling, the team led by him made the ice knife into a sandwich-like structure, so that the two sides of the ice knife were hard and the middle hardness was slightly lower. In this way, during the side sliding process, the ice blade of the ice blade is sharper and more wear-resistant, thereby improving the lateral pedaling force and reducing the frictional resistance. It has been calculated that the pedaling rate can be increased by 20%-30%, and the frictional resistance can be reduced by about 10%.

In terms of snowboarding, the team led by him proposed a self-lubrication solution. The snow wax material and the bottom film material are mixed together to make the bottom film material have self-lubricating properties, so that the sliding process does not need waxing, and the deceleration can be achieved. This is especially useful for long-distance cross-country skiing. (Yang Yuboluo synthesized from people's network, CCTV news)