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    Home > Chemicals Industry > Chemical Technology > Carbon fiber composite materials accelerate the localization of snowmobiles to light up Beijing Winter Olympics with colorful Chinese wisdom

    Carbon fiber composite materials accelerate the localization of snowmobiles to light up Beijing Winter Olympics with colorful Chinese wisdom

    • Last Update: 2022-04-25
    • Source: Internet
    • Author: User
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      On the evening of February 15, the Beijing Winter Olympics men's double snowmobile competition came to an end at the National Snowmobile Center "Snow Dragon"
    .
    The Chinese team Sun Kaizhi and Wu Qingze won the 14th place, creating the best result in the history of Chinese athletes in this event at the Winter Olympics

    .
    On the Olympic arena, Sun Kaizhi and Wu Qingzhe drove the dazzling "China Red" snowmobiles on the "Snow Dragon" track and drove out of the Chinese speed

    .
    A total of 4 gold medals for women's singles, women's doubles, men's doubles, and men's quad sleds were produced in the snowmobile competition

    .
    Although the domestic snowmobiles did not appear in the Beijing Winter Olympics, China has successfully produced domestic snowmobiles using high-performance carbon fiber composite materials, achieving a "zero" breakthrough in this field

    .

      Due to the high technical content and complex process of snowmobile manufacturing, it has been monopolized by foreign countries, which has affected the development of snowmobile projects in China
    .
    In 2019, the Ministry of Science and Technology "Science and Technology Winter Olympics" key project set up the "Key Technology of Carbon Fiber Composite High-performance Equipment for Winter Projects" project, and domestic snowmobiles are the key targets of the project

    .
    Today, China's snowmobiles have achieved a breakthrough in "from nothing", and the second generation of domestic snowmobiles is a typical representative

    .

      From the initial research and development to today's second-generation domestic snowmobiles, the development of domestic snowmobiles is full of ups and downs and thorns, but it still cannot stop the R&D team from advancing
    .
    In October 2019, led by the 703 Institute of the First Academy of China Aerospace Science and Technology Group, and jointly with Beijing University of Chemical Technology, China Aerospace Aerodynamics Technology Research Institute, Beijing Sports University, Dongguan Institute of Technology and other technical superior units in related fields, the project was declared and obtained.
    support

    .

      The No.
    703 Institute of Aerospace First Academy, as the core of the domestic snowmobile special research team, is responsible for the design, development and application demonstration of the first domestic two-person snowmobile prototype

    .
    From the establishment of the project team in November 2019 to the development of the principle prototype of the first two-person carbon fiber snowmobile in China in January 2021, the domestic snowmobile has achieved a breakthrough in "from nothing"

    .
    Since then, under the guidance of the Winter Sports Center of the General Administration of Sports of the People's Republic of China, the R&D team has cooperated with China FAW Group to comprehensively improve the key technologies and performance of all aspects of the snowmobile

    .
    In September 2021, the snowmobiles will be officially delivered for use.
    The iteratively upgraded domestic snowmobiles not only meet the "usable" standard, but also achieve the effect of "easy to use"

    .
    So far, domestic snowmobiles have made breakthroughs in design, materials, and craftsmanship

    .

      The most exciting thing is that the second-generation snowmobile has achieved an all-round improvement compared with the first-generation domestic snowmobile
    .
    Yang Xiaoping, deputy director of the State Key Laboratory of Organic-Inorganic Composite Materials of Beijing University of Chemical Technology, is the project leader of the key technology of carbon fiber composite high-performance equipment

    .
    According to Yang Xiaoping, the structure design of the second-generation snowmobile is more refined, the mold design is more reasonable, and the material performance has been further improved

    .
    The wind tunnel test data shows that compared with the national team's car, the calculated wind resistance coefficient of the second-generation domestic snowmobile is reduced by 6%, and the measured wind resistance coefficient is reduced by 4%

    .

      The snowmobile is known as "F1 on ice" and is a veritable "King of Speed" in the Winter Olympics
    .
    The snowmobile body looks like an open-top racing car in appearance.
    It not only has a chassis and a rudder, but also the players can sit in the car to complete the race

    .
    The rear of the snowmobile is equipped with a brake, and the helmsman drives the snowmobile through a pulley system controlled by two handlebars in the snowmobile

    .
    Such a snowmobile, which is purely manually operated and has no mechanical power system assistance, can reach a speed of more than 100 kilometers per hour

    .

      In order to make domestic snowmobiles run fast on the field and help athletes improve their performance, the materials used in the body need to have the performance characteristics of light weight and high strength
    .
    Yang Xiaoping introduced that the development of domestic snowmobiles uses high-performance carbon fiber composite materials, which are made of lightweight and high-strength domestic aerospace-grade carbon fiber TG800 and high-low temperature alternating (-196℃~120℃) toughness special resin

    .

    On February 17, Chinese snowmobile athletes are training for battle
    .
    (Photo courtesy of CFP)

    On February 17, Chinese snowmobile athletes are training for battle
    .
    (Photo courtesy of CFP)

      The carbon fiber composite material used in the domestic snowmobile is the biggest highlight in the design process
    .
    "TG800 is a new type of material developed in the aerospace field.
    The material density is only about 1/5 of that of steel, but its strength is twice that of steel

    .
    " Yang Xiaoping said that the application of this material to snowmobiles can ensure the safety of equipment.
    The body mass of the snowmobile has been greatly reduced.
    At present, the body mass of the double snowmobile is less than 50 kg

    .
    It is particularly worth mentioning that a key indicator of the TG800: the impact or compressive strength reaches 350 MPa, which can protect athletes from injury in the event of a crash

    .


      Yang Xiaoping emphasized that the advantages of carbon fiber composite materials lie not only in light weight and large design freedom, but also in high fatigue strength and good damage safety performance
    .
    After millions of fatigue tests, the strength retention rate of carbon fiber composites is still 90%, which is much higher than 40% of steel, and the fiber breakage in the composite material will not cause a chain reaction and catastrophic sharp damage, which is very important for athletes in competition.
    excellent protection

    .

      Not only that, the scientific research team also solved the technical problems of streamlining the rudder body, snowmobile manufacturing and helmet manufacturing
    .
    They have realized the optimization of the rudder surface body system, and the test results have reduced the wind resistance coefficient by 8% compared with similar products in the world; using autoclave technology, combined with integrated manufacturing, the test results show that the defect is less than 1%, ensuring high safety

    .
    At the same time, the snowmobile athlete's helmet combines 3D printed lattice technology and carbon fiber composite materials, and collects personalized data on the athlete's head for customization

    .
    The weight of the carbon fiber helmet is reduced by 20%, the drag coefficient is also significantly reduced, and the comfort of the athlete is significantly improved

    .

      Snowmobiles are not the strengths of our country's sports.
    The Chinese national snowmobile team was established in 2015.
    It is a late-start event, but at this Winter Olympics, the solidarity and hard work of Chinese snowmobile athletes has infected us and inspired us.
    More people are interested in ice and snow sports

    .
    The Beijing Winter Olympics has become an opportunity for the realization of national ice and snow sports, "driving 300 million people to participate in ice and snow sports".
    Fly freely on the ice rink

    .

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