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Theatre > Pyrotechnics > Re: Some of the...
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Re: Some of the most recent of Japan's finest.

by "dan c." <dancutter@[EMAIL PROTECTED] > May 9, 2008 at 10:59 AM

On May 9, 6:14=A0am, "Lloyd E. Sponenburgh"
<lloydspinsidemindspring.com> wrote:
> "kjh" <k...@[EMAIL PROTECTED]
> fired this volley
innews:4824407f$0$4930$426a74cc@[EMAIL PROTECTED]
>
> > Is there any mathematical equation in order to create this?
> > I mean : to calculate the delay time thus the thcikness of the layer
> > on the round star ? that would be a "log" =A0equation as the more the
> > diameter of the star grow the more the delay is: but then it has to be
> > relative to the size of the shell and the power of the burst as it's
> > directly linked to speed : well =A0do you know any modelisation
software=

> > that can make predictable pattern ?
> > So im looking for a software :)
>
> You're working too hard to solve a simple problem. =A0The _thickness_ of
> the layer determines the delay, regardless of the diameter of the star.
=
=A0
> It is a linear function, not logarithmic.
>
> If you know the linear burn rate of your delay comp, you can determine
> the delay directly.
>
> You can determine the linear burn rate by rolling some stars to a
> specific diameter (say 1/2") with ONLY delay comp, then burning them to
> determine the timing. =A0One-half the diameter of the test star equals
the=

> thickness of the "delay layer". =A0If the star were coreless and 1/2" in
> diameter, then the delay layer would be 1/4" thick. =A0Time to burn
divide=
d
> by thickness =3D delay per inch of thickness.
>
> LLoyd

Very nice to put it mildly.  Are the whistles using the movement of
the shell through the air to function?  I wish I read Japanese, I'd
like to see more video.  Dan
 




 18 Posts in Topic:
Some of the most recent of Japan's finest.
John Reilly <strbeam@[  2008-05-07 21:48:58 
Re: Some of the most recent of Japan's finest.
"kjh" <kjh@[  2008-05-08 12:52:29 
Re: Some of the most recent of Japan's finest.
danielkaiser123@[EMAIL PR  2008-05-08 04:37:25 
Re: Some of the most recent of Japan's finest.
John Reilly <strbeam@[  2008-05-08 18:22:48 
Re: Some of the most recent of Japan's finest.
"kjh" <kjh@[  2008-05-09 14:15:54 
Re: Some of the most recent of Japan's finest.
"Lloyd E. Sponenburg  2008-05-09 08:14:18 
Re: Some of the most recent of Japan's finest.
John Reilly <strbeam@[  2008-05-08 19:03:52 
Re: Some of the most recent of Japan's finest.
Auriga <bradash1@[EMAI  2008-05-08 20:44:30 
Re: Some of the most recent of Japan's finest.
"dan c." <da  2008-05-09 10:59:59 
Re: Some of the most recent of Japan's finest.
Goober <romack@[EMAIL   2008-05-09 22:18:37 
Re: Some of the most recent of Japan's finest.
danielkaiser123@[EMAIL PR  2008-05-10 06:58:19 
Re: Some of the most recent of Japan's finest.
"J.E.B." <jp  2008-05-10 09:16:03 
Re: Some of the most recent of Japan's finest.
"J.E.B." <jp  2008-05-10 09:41:19 
Re: Some of the most recent of Japan's finest.
John Reilly <strbeam@[  2008-05-10 10:15:09 
Re: Some of the most recent of Japan's finest.
"J.E.B." <jp  2008-05-10 13:25:06 
Re: Some of the most recent of Japan's finest.
John Reilly <strbeam@[  2008-05-10 16:57:36 
Re: Some of the most recent of Japan's finest.
robgood@[EMAIL PROTECTED]  2008-05-11 10:44:15 
Re: Some of the most recent of Japan's finest.
John Reilly <strbeam@[  2008-05-11 11:37:58 

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tan12V112 Sat Sep 6 9:53:18 CDT 2008.