and this is their 125 mm air starburst shell.

這是他們製造的125釐米高空煙火彈

A 20-minute display will not drop 10,000 fireworks.

一場20分鐘的煙火秀會施放超過1萬發煙火

And 60% of them will release bad boys.

有60%是用這顆超屌的煙火彈

Each one costs around £ 30 and contains half a kilo of explosive.

每顆要價30歐元 裡面裝填了半公斤的火藥

And we have to launch it to a height to over 100 meters.

我們要把它發射到百尺以上的高空

As you can see, it’s much more than a bowl of loose powder.

如你所見 這可不只是一碗鬆散粉末

And this is how they test the component parts.

而這 就是他們測試重要零件的方法

The basic firework recipe is flash powder,

煙火的基本材料是閃光粉

a potent form of gunpowder.

也就是火藥的主要成分之一

It’s a mixture of Potassium Perchlorate and Aluminium.

混合了高氯酸鉀和鋁

These ingredients are mixed together in 7 kilo batches

這些原料混合成7公斤的材料

and a small sample is ignited to make sure it has a requisite brightness.

會點燃一些樣品 確保符合標準亮度

This sample has been mixed with Strontium to make it glow red and it’s clearly a pass.

原料摻入鍶後 會發出紅光 顯然這樣品合格

Well, this sample has Barium added to glow green.

發出綠光的 則是摻入了鋇

Again, it does the trick nicely.

這樣品顯然也合格了

If a firework is packed with this loose powder,

如果煙火裡裝的是鬆散粉末

it would explode in one instant flash.

爆炸時只會發出短暫光芒

So the gun powder mixture is turned into pellet to prolong the burn time.

因此要將混合好的火藥做成球 延長燃燒時間

As the burning pellets go to the sky,

當燃燒中的火藥球飛上天

they create the spreading patterns we are all familiar with.

會形成我們都很熟悉的煙火花樣

This test checks whether this particular pellets size will burn of its efficient time

現在在測試這些火藥球的燃燒時間

to create a burst diameter of 18 meters.

它們要達到18公尺的爆炸直徑

There are two roughly formed rings of stars – central ring and an outer ring.

這是火藥球的排列雛形 有內圈及外圈

The outer ring is made of stars of a slightly larger size.

外圈的火藥球比較大顆

Therefore their behaviour and when they burst in the middle

因此當煙火爆炸時

ignites these stars and blows them in the circle formation.

會點燃這些火藥球 形成圓形圖樣

The initial will be the heavy larger stars will travel further.

這些大火藥球會飛得比較遠

That’s in the sky you’ll see one small ring and then a larger ring around it.

這也就是你在空中會看到的雙圈煙火

The next test checks the fireworks 2 fuses.

接下來要測試煙火的兩條引線

Firstly, a length of fuse is measured down to which it’ll slowly burn inside the firework

首先 引線要能在煙火內緩慢燃燒

to ensure it ignites at the correct altitude.

確保會在正確高度點燃火藥

A fuse this length should burn any about 12 seconds.

這種長度的引線要能燃燒12秒

It has, so it’s a pass.

達到12秒了 通過測試

As second external fuse is needed to lose the firework.

第二條外部引線需要脫離煙火

Racking the fuse in paper should contain the hot gases

引線外頭裹著紙 含有易燃氣體

and make the fuse burn much quicker.

讓它能燃燒得更快

We expect this link to fuse to burn within a hundred fifty second.

這條引線要在0.001秒內燃燒完畢

Looks like a pass to me.

好像火箭飛過我面前

The final test is to ensure the firework is no louder than European regulation of 120 decibels.

最後要確保煙火音量低於歐規120分貝

The same noise level as enigmatic drill at close range.

大概跟電鑽的音量差不多