Lightning Tube [ Attention Intresting ]

Tony

Administrator
Medewerker
Imagine this situation: a client wants you to ignite 100 comets around a race track and another 100 on top of a large bridge spanning across acres of water all done, simultaneously! So now you are thinking of the costs with 200 e-matches needed, reels of long wires, several computer node systems, and on and on. Sure it's common to face situations like this (some of us only wish!) and we are more than pleased to budget them out. But in our land of making these faster, easier, and better there is a new product: Lightning Tube. A replacement for a spark generating, non-shock tube alternative to conventional shock tube products. What does this mean?

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Some will remember the Shock Tube system that was invented for the mining industry to avoid the use of long wires which can induce a radio frequency that will produce enough power to set off any explosives connected to it. The mining and the pyrotechnic industry love that instant ignition of any items attached to the cable but that is where the benefits end.

Shock tube is composed of high explosive materials (dump enough of the powder out and... well... lets just say no Pyro needs to do that) so it has to carry a high explosive transportation marking making it difficult to ship. Other problems exist such as the end resulting shock wave doesn't directly ignite loose pyrotechnic powders and the tube is actually deformed when ignited.

Enter Lightning Tube. This non-DOT regulated product will ship as a normal shipment without any HAZMAT fees to pay! (Users are required to have a valid and current ATFE license, type 4 storage and records keeping. Storage and records MUST be followed to ATFE specs.!) Unlike Shock tube you can bend, kink, or knot the tube or even operate with a small hole puncture and it will still transmit flame to the end of the cable. There is no noise, no vibration, and no sense of warming to the hands when it's held (Not recommended to hold any pyrotechnic device unless it was designed to do so.)

Lightning tube works better than shock tube in colder climate and can ignite slow delay mixtures without igniter mixtures. No need for an end igniter as you can ignite loose black powder directly from the output of the tube and you can keep devices as close together as you want because it doesn't need to create that "shock wave" effect.

It works by a principle of propagation with a molten metal spark travelling at 1200 m/s . It cannot be ignited by direct flame as the ignition requires a combination of impact and flame which is provided only by the starter. (That is why it's safe to transport)

The tube can be connected to Pyrotechnic delays to give precise timing of chains, add T joints to create full instantaneous fronts, or use it to replace regular quickmatch leaders. Imagine no electrical wires, less e-matchs, and because this tube can resist weather you don't need to cover long lengths of quickmatch!

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Ken Kosanke of the Journal of Pyrotechnics writes 2 in-depth articles in the January and February Firework Business News editions.

The company carrying the product is also looking for worldwide distributors. Contact them at: LIGHTNING THERMOTUBE, LTD. 12707 North Freeway, Suite 330 Houston, TX 77060 1-800-279-4563 or 1-713-728-1437 website: www.lightningtube.com
 

Vavoom

Registered User
Thanks for sharing.
Looks very interesting and promising.
Don't have the time right now to look for any movies or additional info, but will do that this weekend (if I don't forget).
 

Sparkey

Registered User
It looks impressive, but I don't understand how this tube is initiated? What causes the "spark" to travel so fast through the tube? The men on the internet are holding a small device that seems to cause this spark?

Further I'd like to know how a delay can be added to an existing tube-line. If the story is right, it must be possible to ignite quick-match e.g. with this alternative shock tube, but imagine a reck with 4 100mm shells, can anyone explain how a reliable delay can be achieved? It's not likely that a simple knot can do the trick?

What will a pyrotechnic display look like? Seems to me that it would be more of a (tube)mess than the conventional bickford-cord?

If anyone has more details/pics/movies I would sure like to know!
 

Tony

Administrator
Medewerker
Sparkey zei:
It looks impressive, but I don't understand how this tube is initiated? What causes the "spark" to travel so fast through the tube? The men on the internet are holding a small device that seems to cause this spark?

Further I'd like to know how a delay can be added to an existing tube-line. If the story is right, it must be possible to ignite quick-match e.g. with this alternative shock tube, but imagine a reck with 4 100mm shells, can anyone explain how a reliable delay can be achieved? It's not likely that a simple knot can do the trick?

What will a pyrotechnic display look like? Seems to me that it would be more of a (tube)mess than the conventional bickford-cord?

If anyone has more details/pics/movies I would sure like to know!

The best thing to do is to get some information at the company itself. The company information you can find in my first post. And if you know what you want to know dont forget to tell us.
 

HocusPocus.Pyro

Registered User
Hello Sparkey,

Although I think we need to wait for a little while until we learn more about this product ("Lightning Thermo Tube", or perhaps more correctly "Brinel Thermoshock Tube"), I will carefully try to explain on what I think this product is approximately about.

For ease and convenience I numbered your questions.

The answer to your question number (1): This is a product appears to be initiated by a handheld device here that may be a piezo-electric firing device, or perhaps using a small percussion cap. Initating systems like these were already available for NONEL (later marketed as NO-Match for fireworks industry, but this ended). It's normally possible to fire an electric match into this line also.

Your second question (2): The basis of this product is a relatively thin but strong hollow plastic tube. Imagine the hollow tubes you sometimes see that contain chemiluminiscent colors, that kids hang around their necks. Imagine this kind of tube, but then much thinner... It appears that here in this product too there is a small amount of powder "sprinkled" along the inside of the hollow tube. This amount of powder is very small. But it is just enough to allow a fire to transfer at high speeds through the tube, once it is initiated by somekind of 'stimulus'. In technical terms this is termed a "non-disrupting" cord, which tells you that the plastic cord stays intact after it has transmitted the energy (fire/shock)*. This is really already quite common in the blasting industry and also the space industry. You can find this concept already in described in more detail inside many patents, I think dating back to at least 1968 (Persson). Besides the blasting industry, shock tube is also already used quite frequently by the indoor Special Effects Industry, which the name "Lightning Tube" also infers...
It is also good to realize that this product is most likely not manufactured originally to be used for the fireworks industry. More likely, this fireworks market is only a small fraction of the normal market (blasting) and they will probably hope that the (bigger) companies that are responsilble for large fireworks shows will also start buying their products.

*)This is in sharp contrast with normal detonating cord, which can normally explodes with sufficient brisance to damage steel or initiate high-explosives.


For question (3): see answer to (1)


For question (4): Normally delay elements will be sold seperately with this sort of system. You can normally just click them on. This was the case with No-Match. I expect a similar concept to become available here. The delay element essentially holds the fire for a given fraction of a second, or a number of seconds. But normally this type of product would be used with very short delay, so a front can be fired nearly "instantanous", without needing to fire all expensive electric matches per cue.


For question (5): No, that's not possible. As always, a user needs to carefully follow all the instructions that the supplier gives with the product. I am sure that the supplier will address this issue of delays.

This is really a product that it reserved for professionals only.

Kind regards, HocusPocus.Pyro


Sparkey zei:
It looks impressive, but (1) I don't understand how this tube is initiated? (2) What causes the "spark" to travel so fast through the tube? (3) The men on the internet are holding a small device that seems to cause this spark?

Further I'd like to know how a delay can be added to an existing tube-line. If the story is right, it must be possible to ignite quick-match e.g. with this alternative shock tube, but imagine a reck with 4 100mm shells, (4) can anyone explain how a reliable delay can be achieved? (5) It's not likely that a simple knot can do the trick?
 

Sparkey

Registered User
Hey Hocuspocuspyro!
Thank you for your most extensive explanation of how this product works or most likely will work! It's obvious that this product will never become as normal in use for the pyrotechnic industry as for the use of e-matches i.c.w. electrical wiring.

I think this product will prove itself usefull when executing a single "gag" of firing a series of hundreds of fountains or single shot comets, instead of using so many (rather expensive) e-matches. But since many pyrotechnic devices for the use as mentioned above are (overall) equiped with inserted e-matches, I'm not sure that this product will touchdown in Europe! I'll see if I can find some companies who use alternative firing-methods and will post it here.

Thanks again!

P.s. I know this is an English discussion, but since you're Dutch and Tony is Dutch and I am Dutch and no foreign people are responding to this post, why bother translating our stories? :w
 
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