There is a word limit for posting here. It used to be 9999 words at most, but now I don't know. I have other things to go out, so I can't give you a long speech, even though I type on the keyboard at a moderate speed.
What you notice mainly refers to the blooming form of fireworks.
When fireworks bloom, you can see the pattern because there are bright beads in the paper shell of fireworks. After being ignited, the bright beads on the surface are pushed out of the paper shell by the thrust of the explosion in the process of "opening the bud". In the air movement, bright beads burn out gradually, and their movement trajectories are displayed in their disappearing trajectories, with the help of human vision and
If many bright beads in a paper tube are filled into the paper tube in series and mixed with gunpowder injected into the paper tube, the bright beads will be pushed out continuously during the combustion process, forming clusters of discontinuous, discrete, divergent and family curves.
If it is a "fireworks bomb", there is a brief introduction at the end of this article. The standard pattern it produces is spherical, which is a nearly circular diffusion pattern under the influence of gravity and airflow. If it is in a weightless environment, it is an ideal symmetrical "round hedgehog", which is a standard circular pattern.
There can be bright beads with different diameters, different burning speeds, different compositions and different flame colors in the fireworks display, and there can also be many small paper tubes filled with gunpowder and placed in the fireworks display. The following also introduces the artificial patterns of fireworks bombs with different spatial distribution laws and spatial distribution densities, which is the difference you proposed.
If we carefully observe the video and photos of the non-circular pattern blooming in the fireworks, we can notice that the bunching direction of its blooming is uncertain, both at home and abroad. This is a world problem.
In 60,000 Chinese-English bilingual guided fireworks engineering technical documents, I gave a comprehensive explanation of the new blooming mode in the air and the blooming mode of space posture. In order to avoid * * *, I will not disclose the specific contents of the document for * * *.
If you need to know for yourself, you must study mechanics at university. By the time you graduate from college, you will be able to get a general idea of something. In addition, we should study aircraft dynamics, aircraft measurement, control and navigation, inertia mechanics and other majors. But these methods are standard, and the cost is quite high, so they can't be used in practice. If we want to reduce the cost, we must rely on the accumulation of precision machinery manufacturing.
As for the large number of patents applied by fireworks manufacturers in China and China around 2000, they all violated the dynamic standards such as "counterweight" and "pouring iron sand".
If you want to ask more questions, you can leave an email address, and the website is not allowed to be made public. Some people paste Arabic numerals in traditional Chinese characters.
The following are some related contents that I made public on the Internet:
Various fireworks subtitles and fireworks shapes:
The simplest and cheapest,
Putting dozens of candles and dozens of fireworks tubes in the ground according to a predetermined pattern and then lighting them together can burn for a long time and keep the pattern with the fire.
Second,
Dozens and hundreds of pyrotechnic tubes are tied to bamboo sheds and barbed wire according to a predetermined pattern, and then ignited together, which can burn for a long time and keep the pattern with the fire.
Minimum consumption 1000 yuan.
Third,
A row of barrels is prepared by the discharge company and pre-programmed, and a row of fireworks bombs with delay fuses are fired into the sky.
Exploded at the same time in different positions of the plane,
Flash according to the predetermined grid and flash past.
Minimum consumption 1 ten thousand yuan.
Fourth,
It can only be very simple graphics, unstable flashes in the air. Hire a fireworks company to build a cavity in the fireworks.
Blast some solidified and bonded gunpowder balls (bright beads) to unstable positions. Many experiments have to be repeated in advance, and finally the air distribution can't be controlled, and so can foreigners, who have no way to start and have no brilliant ideas.
Minimum consumption 1 ten thousand yuan.
Fifth,
The guidance smoke is 00000 flowers, and the guidance flame is 0000 fires. Say a word and you will play three-dimensional animated subtitles.
Sixth,
Virtual stereoscopic imaging without glasses is not suitable for outdoor display at present because of its small spatial scale.
Projected on the external wall or screen,
The screen can be a waterfall curtain wall,
It may be a smoke wall.
Seventh,
Traditional paper banners with subtitles appeared.
Reliable, safe, stable and impeccable.
Eighth,
Scatter the loose powder into a pattern. No, so is Hao! @ #￥%……& amp； *。
The fireworks you saw,
It is usually an ideal rendering drawn by a computer.
In fact, it can't be achieved accurately.
It is a world problem to really create shapes and subtitles that are continuously and stably distributed in the air and continue to shine! ! ! ! !
Detailed engineering documents have been circulated on WeChat for free.
The number of Chinese words involved exceeds 654.38+million, most of which are in Chinese and English.
All these were first put forward by China people.
What does fireworks mean?
Especially: a hundred years ago,
The fireworks of the "fireworks bomb" invented by foreigners,
It has always been the most popular and favorite fireworks variety.
Earlier,
Fireworks are just a kind of fire.
This is strictly controlled stuff. Private purchase, transportation, possession and discharge are prohibited. Only a professional discharge company can discharge it on its behalf.
The structure of fireworks bomb is that gunpowder is made into particles in a heated open cylinder.
The cylinder keeps rolling, pouring adhesive, flame retardant and gunpowder into it. They embrace each other and form many spheres.
These spheres are like snowballs, rolling bigger and bigger.
The process of granulating and coating sugar with round particles in Chinese and western medicine is similar.
This is a "bright bead", dried in the shade, mixed with gunpowder and inserted into the fuse.
Wrapped in two semi-circular paper shells, wrapped outside the paper shell by a planetary motion tape winding machine,
Wrap the adhesive in a paper case, and be careful not to leave a fuse.
The package below fires gunpowder.
Put the launch tube, glass steel tube is used at home, thick-walled stainless steel tube is used abroad, and decorative tube or iron tube cannot be used.
After the propellant is ignited, the sphere is pushed into the air, and when the projectile is at the highest point, the delay fuse is detonated. The bud opener exploded a bright pearl in full bloom, which exploded around with the explosion center as the origin, and pulled out a dense colorful bright line in the air, which was quite spectacular, colorful, fascinating and fascinating.
Fireworks have been entrenched at the top of fireworks, and their authoritative position is unshakable, indestructible, irreplaceable and subversive.
If it challenges its monopoly in the future,
It will be guided fireworks, guided fireworks,
Baidu's website has a detailed introduction.
According to keywords,
Just search.