There are still 25 days to go before the opening of the Beijing Winter Olympics, and the popular science project brought to you today is - ski jumping!
Ski jumping originated in Norway and has been included in the competition since the first Winter Olympics. The 2022 Beijing Winter Olympic Ski Jumping Competition will be held at the National Ski Jumping Center in Zhangjiakou, resulting in a total of 5 gold medals.
The jumping platform is composed of a ski lift, a jumping area, a landing slope and a stopping area, and is divided into a standard platform and a large jumping platform. Ski suits are generally made of synthetic fiber materials with a thickness of between 4-6 mm. The rules stipulate that the total weight of athletes' ski clothes, ski shoes, helmets and ski goggles is determined by height and weight, and the corresponding snowboard length is also specially stipulated, generally 1.45 by height, the widest width is 11.5 cm, and there is a direction groove at the bottom of the board.
Wind tunnel tests have shown that the "V" shaped posture can effectively reduce wind resistance and provide more lift.
During the flight, athletes can control the balance of the body by swinging their arms, and the landing adopts a slightly curved posture of legs similar to lunge, which can effectively reduce the powerful impact on the human body.
Intern editors | oily noodles