On Apr 20, 7:52=A0pm, sstrik <sst...@[EMAIL PROTECTED]
> wrote:
> On Apr 18, 3:31=A0am, "Lloyd E. Sponenburgh"
>
>
>
>
>
> <lloydspinsidemindspring.com> wrote:
> > Mike Burge <frontier_market...@[EMAIL PROTECTED]
> fired this volley
innews:58a03=
0bf-c8db-4921-939c-ec8f66d0c292@[EMAIL PROTECTED]
>
> > > However, I have yet to observe
> > > detonation in our standard 70/30 perchlorate flash initiated in both
> > > ways
>
> > How are you determining whether or not it goes high-order?
>
> > I wish I could cite them now, but I have read accounts where, when 7:3
> > was initiated by a blasting cap, it immediately detonated, without any
> > discernable deflagration-to-detonation transition.
>
> > I have, myself, made magnesium flash go high-order by mixing it with
> > double-base nitrocellulose powder. =A0But that's not really flash
powder=
> > any more, is it? It's a mixture of flash powder, nitrocellulose, and
> > nitroglycerine -- the latter being a material we already know to be a
> > high explosive. <G>
>
> > Simply filming/taping the test will not normally do, although high
speed=
> > films of detonations can show the rate of the flame front. =A0At the
> > minimum, you must do some sort of witness plate testing to roughly
> > determine the velocity of explosion. =A0Even then, unless it clearly
> > exceeds anything reasonable, it's meaningless information until you
also=
> > measure the speed of sound in the explosive substance itself ( 7:3 is
> > do***ented... I meant for "explosive X,or Y, or Z", as you choose to
mix=
> > them).
>
> > LLoyd
>
> The question of did it deflagrate or detonate is often mute as you can
> be still just as dead :)- Hide quoted text -
>
> - Show quoted text -
true enough, its just interesting if done safely, but since this is a
fireworks group, I will not prolong any such disussions unless someone
is claiming their rockets or shells are detonating with the force of
RDX :P, but thats also different bc they are not being tested
unconfined. The point is taken that whistle and flash needs to be
handled safely no matter if it is detonated by a booster charge or lit
by a fuse. They are both energetic enough to do some major damage, but
if respected and proper precautions are taken they are way safer than
the improvised stuff the people on so called kewl bombs forums are
talking about making like acetone peroxide which would have no use bc
its unstable and cant be stored makes poor salutes bc it lack the boom
and light output of flash. I have never seen ground salutes being used
in displays, only hanging salutes strung together above the ground and
aerial salutes in day shows for festivals in europe ( thats where ive
seen them).
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