Olympic opening fireworks
The fireworks show is the biggest highlight of the opening ceremony of the Beijing Olympics. 12 projects, the total time is 16 minutes and 38 seconds, focusing on sacred, magical, innovative, brilliant, brilliant artistic effects; and the Bird's Nest, no matter where you sit, and the line of sight between the center point of the stadium is 140 Around the meter, everyone in the audience can watch the game equally. This is the new feeling that the bird nest brings to the world.
The reporter interviewed Cai Guoqiang, the chief designer of the visual effects art of the opening and closing ceremonies of the Beijing Olympic Games, and Zhao Weiping, the chairman of a fireworks company responsible for providing fireworks products, to reveal your secrets.
[Size decryption]
Decipher how a peony blooms
The first climax point of the bird's nest was to interpret the whole process of the national flower peony from the hustle and bustle to the full bloom. The bird's nest instantly became the red ocean of peony. From the flower bone to the flower petals relay, and then the peony blooms, the peony blooms only take 11 seconds, but the number of fireworks is 4,845.
In order to allow the whole red peony to cover the entire nest, the designer used the computer 3D special effects technology to draw a huge peony covering the roof of the bird's nest, and then selected 85 points of the bird's nest top, each position is responsible for launching 3 Petals, each consisting of 29 fireworks, symbolizes the 29th Olympic Games.
When discharging, in the order from the inside to the outside, the flower core is first emitted, and then the innermost flower petals are emitted, and the outermost petals are sequentially transferred. When the last layer of petals is opened, 85 points are simultaneously activated, and the fireworks are fired.
Decipher how two white pigeons spread their wings
The attentive audience will find that at the opening ceremony, a pair of snow-white wings were born on both sides of the nest, and they were fanned up and down like a dove of peace.
Zhao Weiping told reporters that it is not difficult to let the bird's nest produce wings. The difficulty is that the wings should be fanned up and down. The movement shows that a dove of peace is flying. In order to make this peace pigeon smart, the researchers first improved the effect of the traditional fireworks elements of the white iris, only white light, without the trail left by the tail and the obsolete, which is like the wings of the peace dove. In order to make the wings move, the researchers actuate the frequency of the wings of the flying dove in the flying pigeons, so that the birds in the nest and the average dove fan wings once every 1 second.
Deciphering how the three red flashing nests are moving
A red silk thread in the night sky, wearing a bird's nest full of scenes, like a red neon light constantly flashing, under its embellishment, the entire bird's nest is flashing, running, jumping. The first difficulty of the red flashing bird's nest lies in the arrangement. In order to cover the entire nest, each main beam should be erected at a launch point every five meters. At the junction of the two main beams, a launch point is also set every five meters. The average distribution of all the launch points, the entire nest can jump in the red ocean; the second difficulty is the time difference control, the fireworks at each point must be lit at the same time and extinguished.
How to unlock the four-day door
There was a scene in the opening ceremony: a magnificent arched door that appeared above the nest. Close the door, open a slit to open half, open three quarters, until the Golden Gate finally opens. Experts revealed that it is difficult to open the distance and angle of the sky to the sky. The distance between the first set of launch points and the angle of the horizontal plane must ensure that the fireworks are delivered in an arch shape when they meet in the air; and the distance between the second set of fireworks and the horizontal angle must be guaranteed. When the fireworks meet in the air, there is just a gap, just like the door has just opened a slit, and so on. If the angle is a little bit, the process of opening the door cannot be vividly reproduced.
Cai Guoqiang, chief designer of visual effects art at the opening and closing ceremonies of the Beijing Olympic Games
Deciphering how to make five rings and numbers on the sky?
At the opening of the opening ceremony of the 9th, 8th and 7th, the first thing in the air was a flashing number. During the opening ceremony, five circles of five colors of red, yellow, green, black and blue appeared in the nest, and five circles circled each other to present the Olympic five-ring pattern. How did these patterns come out?
Experts introduced that the number nine drawn with fireworks, the time spent in the air is not much more than a second, nine just extinguished, eight hours of light, flashing again for a second, which number stays even if it is a blink of an eye The time spent on the fireworks is not the countdown stopwatch. The biggest difficulty in using the fireworks to express the Olympic rings and other patterns is that the starting point and time interval of the fireworks are difficult to control. The interval error of each fireworks can not exceed 0.03 seconds. The uniform speed can be seen in the ring, and the audience can see the circle. ring.
[Encryption]
Green myth of 16 million fireworks
Many people like fireworks, but many people can't accept fireworks. At the opening ceremony of the Olympic Games, the audience was surprised to find that the fireworks show throughout the opening ceremony did not leave a piece of paper scraps. The unprecedented performance of the Nest Fireworks has created a green myth of the history of fireworks in the world.
This all depends on the continuous progress of the current fireworks production process.
Zhao Weiping said that the traditional fireworks production process needs to be sealed with a paper pad to form a pressure chamber. With the explosive power of the paper pad and the gunpowder in the cabin, the fireworks can be vacated. Taking the traditional fireworks-like meteor shower as an example, under the force of the pressure chamber, the fireworks can display the visual effect of the meteor through the sky at high altitude. Otherwise, the fireworks can only rain on the ground. The paper pad pressure chamber is an essential body organ for fireworks, and this is the main source of pollution for fireworks. After repeated trial and error, the researchers finally found a substitute for the paper pad pressure chamber, a new environmentally friendly material, the explosion effect is higher than the paper pad pressure chamber, which can be completely decomposed and burned at the moment when the fireworks are ignited, leaving no bit of paper. Chips and residues, this scientific research will be promoted in other fireworks and firecrackers in the future, but due to different products and different formulations, further promotion requires further research and development.
[secure decryption]
How to protect the nest in the fireworks?
Many people in the industry have worried that the protective film of the Bird's Nest cannot withstand the high temperature of any kind of fireworks. Even if only a small Mars falls on the nest, the film will be burned. How many guarantees of the safety of the bird's nest at the opening ceremony?
It turned out that researchers and Beijing Institute of Technology have already begun to develop chip fireworks products, so that chips with data such as discharge time can be implanted into the heart of fireworks. In this way, fireworks have the brain and have the ability to talk to the computer system. Every Mars' detonation time and landing point are under the control of the computer. Even if tens of thousands of fireworks bloom at the same time, all Mars can flash at the same time. Bright, at the same time, fly to the set location, burn out within the same time limit, all Mars are burned out at the top of the bird's nest, the high temperature of the fireworks will not become the nemesis of the bird's nest film.
Water Purifier Pressure Sensor
Shenzhen Ever-smart Sensor Technology Co., LTD , https://www.fluhandy.com