"Wind" is everywhere in motion
In winter racing sports
Reducing resistance is an important way to improve athletic performance
The resistance to exercise mainly includes
Air resistance and frictional resistance on the surface of snow and ice
Among them, the air resistance can generally reach 80%
Aerodynamic studies such as air drag reduction
It is an important research direction for improving athletic performance
The Beijing Winter Olympics Ski Jumping Men's Individual Big JumpIng Qualification Tournament kicked off today, with Chinese ski jumper Song Qiwu representing China.
Nordic traditional power of ski jumping, has a history of development of hundreds of years, China ski jumping national training team of this young team, most of the athletes are from cross-border material selection, Song Qiwu is in 2018 from athletics to ski jumping, from the first time to really step on the snow to stand on the winter Olympic field, it took only 5 years.
Taxi, jump, fly, land
The time of the air flight is about 5-6 seconds
I want to improve my performance in ski jumping
The most important way is to reduce air resistance
It is often used in the wind tunnel of military industry, aviation and transportation
It is a key platform for aerodynamic research
For athletes at the tip of the pyramid, every second of performance improvement is exposed to a geometrically increasing risk of injury. The use of wind tunnel technology can biomechanically analyze athletes' movements and propose improvement plans to help them improve their posture.
A sports wind tunnel built by Laiyuan, China
It is the world's first to be built for the characteristics of ski jumping
Sports-specific wind tunnels
It is a key platform equipment for aerodynamic research in sports projects
It can be unaffected by weather and seasons
Achieve four seasons of training
Sports wind tunnel of Laiyuan National Training and Scientific Research Base
The inner part is 32 degrees, 11 degrees and horizontal training sections
Simulates gliding, take-off and aerial flight
Domestic top sports training research experts gathered here
Athlete for ski jumping and Nordic biathlon national teams
Provide the most professional movement technical analysis guidance
Chen Xiaoping, researcher of the Institute of Sports Science of the General Administration of Sport
Professor Chen Xiaoping said: "We built this wind tunnel under the jumping platform of Laiyuan. Wind tunnels as a training for high-platform snow jumpers, there is currently no standard in the world, and it has not become a fixed model. Training in the wind tunnel must be done cross-border with on-site training. So China is currently the only country in the world that has solved this problem. ”
"Wind" – the most unpredictable influencing factor
"Wind sense" training is
Auxiliary suspension ropes are used in the slope section of the wind tunnel
In the safest environment possible
Cultivating athletes' "Royal Wind Technique"
Efficiently avoid sports injuries caused by overtraining
Three-dimensional attitude capture system and athlete foot force measurement balance
Combined power and posture
In a relatively static environment, aerodynamic resistance testing is achieved
Athletes take off at a height of 1 cm per height
The flight distance will be 1 to 1.5 meters
Therefore adjust the speed and direction of the athlete's introduction
Optimize the control of the air flight attitude
It is the key to achieving excellent results in ski jumping
Wang Jiadao, director of the Department of Mechanical Engineering at Tsinghua University
"We do two things in the wind tunnel, one is to test the force, and the other is motion capture." Professor Wang Jiadao said. After that, these data are used for interface drag reduction research to help athletes find the optimal attitude for air flight and achieve the purpose of efficient training.
Liu Hui, Executive Dean of the China Institute of Sport and Health, Beijing Sport University
Professor Liu Hui said: "The action is collected by moving, and the effect is collected by the force measuring platform. We must set up a synchronous setting of the motion posture capture and force measuring platform and the wind tunnel, and comprehensively collect the data and analyze it. ”
Gao Feng, deputy secretary of the party committee and executive vice president of Beijing Sport University
Professor Gao Gao said: "In the past, our thinking was more about constantly improving the physical fitness of athletes. With the wind tunnel, we can accurately capture the posture of the athletes. We have formed a drag reduction laboratory and built such a platform, which has a chief expert and a team to ensure the integration of our scientific research and training. ”
Technology has joined the era of winter sports competition
The wind is trained from the blood and sweat traditions
Summoned out of the ice trails and snowfields
Control wind Use wind
Together with the power that human beings have admired since the beginning of their existence
Convergence for conversion and utilization
A new era of sport has arrived
Science and technology to the Winter Olympics Science and technology to the future
Beiti Media produced a series of documentaries "The Covenant of the Winter Olympics", which recorded the preparation process of the ice and snow athletes with the lens, and behind the few seconds on the field were thousands of years of struggle, and also recorded the team that struggled silently outside the arena. This is the story of ice and snow, but also the story of struggle.
Video: Song Xuliu
Editor: Ruofei Xu (Intern)
Proofreader: Song Xuliu