You need a press and special tooling to start with. This can cost money and takes space. Don't take this on, unless you're ready to make the necessary investment in the kinds of good equipment that Ned shows you how to use in this project. Believe me, you cannot cut corners when making whistles: either you invest in the right equipment and learning, or you fail, possibly catastrophically. Making whistle fireworks is not instant gratification.
Whistle fuel takes time to make. And you have to be extraordinarily careful, and you cannot rush it. Why You Might Want to Learn to Make Whistles Making a big whistling firework and using it in a fireworks display is a guaranteed crowd pleaser.
It is something most of them will never have seen and heard before. This is a firework the big boys make and that audiences just love. The satisfaction you can get from adding whistles to your aerial shells, or launching your first whistle and strobe rocket, is mind altering. It will pump you up like few other fireworks can. Within this and the next two projects, you have what I consider to be the best tutorials ever written on making whistles and whistling fireworks rockets, fountains, etc.
That means, that if you follow Ned's instructions closely, you can pretty much be guaranteed of successfully making just about any kind of whistling firework you can imagine. And to do it well. Often when making fireworks we focus on visual effects. But our ears can detect a lot of other effects that are going on. The special sound of a charcoal, core-burning rocket as it quickly "Whooshes" out of the launch tube is quite different than the slow "Shhhhhhhh" as an end-burner launches, and I enjoy the sound of them both.
For the Pyrotechnics Guild International's convention I have made girandolas containing multitudes of these core-burning motors, and I eagerly look forward to hearing them as they rise skyward. It's a bit like a jet engine taking off. For a different sound, I have some girandolas, which have whistle motors on them, and I also have some of these whistlers on my competition Chromatrope wheel.
Whistles add one more auditory dimension to fireworks effects, and while Saturn Missiles can wear thin on me after a while, I do enjoy a whistling effect occasionally. For the purposes of this article it is a pyrotechnic device designed to produce a shrill audible effect. But there are whistles and there are whistles. There are two primary types, and you need to know the difference before you make them, so that you can pick the correct tooling.
There are whistles designed to generate powerful thrust in order to fly, and whistles, which have lower thrust. Whistles with high thrust are normally used as whistle rockets. Both types emit showers of sparks. Note: To make any kind of whistle, you must use a press either hydraulic or arbor and tooling that is specially designed to make whistles.
The important thing to remember is that you use different types of tools for different kinds of whistles. Simply put, there is whistle rocket tooling, and there is simple whistle tooling. Be sure you have the correct tooling before you start. Warning: Attempting to make whistles without the proper tooling can be fatal. Whistle composition is highly impact and friction-sensitive, and is a very powerful explosive. Whistle rockets have a sound all their own, and can be flown with only the whistle engine, or with other pyrotechnic effects, such as strobes, shells, or salutes.
A simple row of stand-alone whistles, mounted like fountains on the ground, will certainly grab an audience's attention during a fireworks display. Whistles can also be loaded into an aerial shell, such as a color-whistle-and-report shell. When the whistles have a bit of titanium in them, they make wonderful silver-tailed whistling inserts. If they are used as shell inserts, only the amount of fuel that will burn for seconds is pressed in them so that they don't burn all the way to the ground.
Whistles can also be mounted on the exterior of an aerial fireworks shell, ignited when the shell is launched out of the mortar, and serving as a whistling rising-effect as the shell rises skyward. Making whistle fuel and pressing simple whistles are two of the first steps to making whistle rockets and strobe rockets, which I'll be exploring in follow-up articles.
VAT No. We endeavour to dispatch all orders placed before 12pm the same day although this is not always possible in our busy season, October — December. All dates are treated as the latest date for delivery NOT the date you would like delivery.
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If this is blank your order will be delivered on the next Saturday after the day of ordering. Show Builder Wishlist Deliveries Showroom. Join us Sign in Register. Logged in My Account. Contact Us No products in the basket. Sign In. How do Fireworks Make Their Sound? September 24, Is it just about the explosive gunpowder? This is created by confining the explosion inside a small shell.
The gases expand much quicker than the speed of sound and therefore, the cartridge explodes it creates a loud, sonic boom. Each pop or boom is actually the sound of chemistry in action. The sharp, loud pops that are most common in aerial shows are the sound of the burning or the bursting charges together with their color-producing metal powder mixtures.
Fireworks that use gunpowder create a louder, deeper boom as the powder ignites. How tightly the stars are packed into the firework shell also impacts the noise they produce.
For example, to create that whistling sound that some fireworks make as they rocket up into the air, stars are packed into a small narrow tube so that—as they light—they are forced down the tube much like with a mechanical whistle. However you plan to celebrate with fireworks this summer, always read the cautionary labels on your fireworks! The Shape of Fireworks The arrangement of those stars inside the firework shell casing can also determine the shape of the firework in the sky.
If the pyrotechnic technician assembling the firework wants lights in the form of a heart in the sky, the stars are arranged in the shape of a heart inside the mortar shell. These are the consequence of the use of some organic compounds.
Various aromatic organic compounds can be used; salts of the very shock-sensitive picric acid were previously used, but now gallic acid, salicylic acid and benzoic acid salts are more commonly used.
These organic compounds are mixed with oxidisers, and then tightly packed into the firework tube. When they burn, the aromatic compounds produce small explosions which cause pressure changes in the gas being ejected by the burning mixture. This creates a standing wave in the tube, and as the distance between the end of the tube and the burning mixture increases, so does the wavelength, producing the characteristic descending whistle sound.
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