(Beijing Winter Olympics) Secret behind the "Olympic Five Rings" fireworks: the weight is accurate to milligrams and discharges zero residue
China News Agency, Shijiazhuang, February 11th: Uncovering the secret behind the "Olympic Rings" fireworks: the weight is accurate to milligrams and zero residue is released
Author Zhao Danmei Hao Ye
At the opening ceremony of the 2008 Beijing Olympic Games, little "starlights" converged into the "fantasy five rings" to amaze the world.
After 14 years, the "Olympic Rings" fireworks bloomed brilliantly in the "Bird's Nest", pushing the opening ceremony of the Beijing Winter Olympics to a climax.
It is precisely for this moment of bloom that Li Liangliang and his team "planned carefully" for 8 months.
"It is very difficult for the 'Olympic rings' fireworks to bloom at the same height and on the same facade at the same time." Li Liangliang from Anping Hebei Shenggu Fireworks Manufacturing Co., Ltd. is the chief engineer for the R&D, production and display of high-altitude special effects fireworks for the Beijing Winter Olympics.
He explained that due to the different raw materials of the five colors of the "Olympic Rings", the lift-off height and burning time are also different, and each launch point must be accurate to the centimeter.
At the same time, the weight of the high-altitude special effect illuminator must be accurate to milligrams to ensure the effect.
On the evening of February 4, the opening ceremony of the 24th Beijing Winter Olympic Games, which attracted worldwide attention, was grandly held at the National Stadium.
To this end, they restored the firing environment of the Beijing Winter Olympics 1:1 in Anping County. After repeated experiments, they finally exchanged for the perfect launch of the "Olympic Rings".
From the 2008 Beijing Olympic Games, the 29 huge "firework footprints" symbolizing the Olympic historical footprint, to the high-altitude special effects fireworks at the opening ceremony of this year's Beijing Winter Olympics, Anping fireworks have been associated with the Olympic Games for a long time.
Despite their rich experience, Li Liangliang and his team had been "pinching the sweat" until a second before the fireworks took off.
"It must be a success!" After receiving the task of setting off high-altitude special effects fireworks at the opening and closing ceremonies of the Beijing Winter Olympics in July 2021, Li Liangliang immediately set up a special experimental research and development team to continuously test the drug ratio and the color of the high-altitude special effect luminous body medicine ball. in order to achieve the best results.
At the same time, the team specially prepared a high-altitude special effect illuminator with low smoke and zero residue. After the fireworks are fired, nothing will fall off, while ordinary fireworks will drop paper scraps, sawdust, etc. after they explode.
According to Li Liangliang, there are very few teams in the world that can type with high-altitude fireworks. Compared with medium- and low-altitude special effects fireworks, high-altitude special effects fireworks are bigger and more spectacular.
For example, the opening ceremony of the Beijing Winter Olympics "exploded" the fireworks shape "Li Chun", with a height of 280 meters, a width of more than 110 meters and a length of nearly 200 meters when unfolded.
Therefore, high-altitude special effects fireworks are an essential part of important celebrations.
On the evening of February 4, the opening ceremony of the 24th Beijing Winter Olympic Games, which attracted worldwide attention, was grandly held at the National Stadium.
In addition to the above problems, Li Liangliang's team also needs to face more challenges from the weather.
"The production of high-altitude special effects luminous bodies requires water and raw materials to roll together like a Lantern Festival. The raw materials are easy to freeze during production in winter, and they are easy to crack after being sent to the drying room." Li Liangliang said that the best seasons for fireworks production are spring and autumn. The minimum temperature during the production of high-altitude special effects fireworks at the opening ceremony of the Beijing Winter Olympics exceeded minus 10 degrees Celsius.
"If the intensity is not enough, it will not be able to reach the expected flying height with a well-adjusted boost." Li Liangliang said that it is not difficult to ensure the height of the fireworks. It is difficult to ensure the height of each high-altitude special effect illuminator. completeness.
After numerous experiments, Li Liangliang and his team finally solved the temperature difference problem by adopting the step heating and step cooling methods.
Fireworks explode over the Bird's Nest during a rehearsal for the opening ceremony of the 2022 Beijing Winter Olympics in Beijing, January 30.
Image source: People's Vision
When the "Olympic Rings" and "Li Chun" meet, a vibrant Winter Olympics will also bring hope and strength to a world plagued by the new crown pneumonia epidemic.
Currently, Li Liangliang and his teammates are preparing for the high-altitude special effects fireworks for the closing ceremony of the Beijing Winter Olympics and the opening ceremony of the Beijing Winter Paralympics.
He said with a smile that he would not let everyone down.
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