I saw the “Milky Way” flowing straight down into a huge ice cube in an instant; Snowflakes are placed on the “ice surface” one after another, and immediately quietly transformed into the Olympic rings. The five rings are rising… Making the audience’s senses like shuttle ups and downs in the magical scene of continuous blending between water, ice and snow.
On February 4, the changing stage of the “bird’s nest” of the National Stadium was presented for the first time at the 2022 Winter Olympic Games in Beijing, bringing a visual feast of ultimate enjoyment to hundreds of millions of spectators all over the world. The blessing from Aerospace Hi-Tech Holding Group Co.Ltd(000901) is behind it, which ensures that the Chinese stage at the opening ceremony of the Winter Olympic Games is as safe and accurate as launching rockets.
“The director is responsible for excellence, and we are responsible for safety and reliability, providing a solid foundation for artists and a technical guarantee for artistic creation.” On February 4, Li Minghua, Secretary of the Party committee of China Academy of Launch Vehicle Technology (hereinafter referred to as “the academy”), said in an interview with the reporter of science and technology daily.
It is understood that China Academy of launch vehicle technology, as the general unit of the Winter Olympic special project of China Aerospace Hi-Tech Holding Group Co.Ltd(000901) Group Co., Ltd., has undertaken the technical support tasks of many projects such as the stage, air facilities and ground display system of the opening and closing ceremonies of the Winter Olympic Games and the winter Paralympic Games. Beijing Long March Tianmin High Tech Co., Ltd. (hereinafter referred to as “Long March Tianmin”), an innovative enterprise from Beijing Economic and Technological Development Zone, is a wholly-owned company of Beijing Institute of Aerospace Launch Technology affiliated to the rocket Academy. Its general ground stage system should complete the most important ceremonial performances such as HJ display, wh display and video playback to meet the needs of different scenes.
As early as January 20, 2021, at the report meeting on the preparations for the 2022 Winter Olympic Games and the winter Paralympic Games in Beijing, Xi Jinping General Secretary clearly proposed to highlight the requirements of “simplicity, safety and excellence”. As the core equipment of the opening and closing ceremony, the ground stage system is the space and carrier to implement the competition requirements and realize the director’s creativity.
Safety is the premise of all wonderful performances. It is understood that the opening ceremony bid farewell to the “crowd performance” (the number of participants is only 20% of that at the 2008 Olympic Games). Using science and technology to make the stage Fuller is one of the biggest features of the opening ceremony of this winter Olympic Games. This makes even minor mistakes on the stage will be magnified and highlighted. In order to ensure safety, the long march Tianmin first applied the aerospace system engineering model to manage and implement industrial projects, which is also an important exploration of management innovation in the industrial field.
Li Minghua said that different from the colorful and warm atmosphere of the summer Olympic Games, this winter Olympic Games should use science and technology and new concepts to express the ethereal romance brought by winter. Facing the open-air stage of China’s largest stadium at present, the special team of Tianmin of the long march completely placed the complex stage engineering system equipment under the calm “ice surface” – dozens of sets of motors and rigid chains, steel wire ropes and pulleys cooperate with each other to drive large lifting platforms, car platforms, tilting platforms and other mobile equipment to complete all kinds of lifting, translation Turning and other actions – make the “ethereal” realized, and give the warm feeling surging under the cold stage surface with machinery.
It is reported that the ice cube condensed from the “galaxy” into a whole body of ice glittering and translucent on the bird’s nest stage, with a total weight of about 400 tons and a lifting weight of 180 tons. The load is more than 8 times that of the large lifting platform of the general theater. It is the driving equipment with the maximum power of the whole opening and closing ceremony. Under the condition of limited site, the long march Tianmin development team accurately controlled the motor to drive 4 sets of synchronous transmission units composed of 16 chains and 16 steel wire ropes to control the lifting and positioning accuracy of this huge ice cube within ± 1mm.
When the snowflakes on the “ice surface” immediately quietly turn into the five Olympic rings and rise slowly, this smooth transition comes from the “small opening and closing” method of “sinking first, then translating and finally rising” adopted by the ground central lifting platform. By adopting this innovative way, Tianmin of the Long March can reduce the abrupt feeling brought by large-scale actions, provide a smooth and stable stage for artistic performance and process ceremony, and shape a quiet and aesthetic artistic conception with the overall performance.
Li Minghua said that the design of the stage machinery control system adds the digital simulation software and hardware equipment used in the research and development of aerospace system products, carries out the optimal design of control algorithm, comprehensively carries out the hardware in the loop simulation test test, and creatively combines the Winter Olympic project with the quality management system familiar to astronauts, so as to identify and avoid major mistakes in the design stage, Improve the reliability and safety of the whole system. Compared with the general rocket flight test, nearly 100 ground tests need to be carried out, and nearly 1000 ground tests have been carried out for the stage system of the Winter Olympic Games. Through various subsystem and comprehensive tests, eliminate all unreliable factors and achieve “zero error” in live performance.
In response to the call of “holding the Olympic Games thrifty”, the special team of Tianmin of the long march gave full play to the ability of the rocket academy to “reduce costs and increase efficiency” in the management mode of aerospace system engineering, and cooperated with the main creative team of general director Zhang Yimou to complete more than 20 rounds of continuous adjustment and optimization of creative schemes, saving nearly 10 million yuan.
