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Several dozen of these clustered together in a round that
fires them in every direction as a starburst pattern once
gets to altitude.
They spray a flammable mixture out the back, perhaps
even having the expulsion of this mixture propelling the
rocket hydraulically like a water rocket.
be any flammable fluid perhaps mixed with suspended
particles of various substances that burn with various
colors when ignited.
When the fluid is almost expended, the shell ignites and
lights the trail of fluid behind it. The trail of fluid then
burns backwards to the center of the original launch
point of all the shells.
The effect would be a sort of "reverse explosion".
Not sure if I described it clearly. Picture a tracer round in
reverse if that helps.
[Loris, Jan 03 2016]
||I'd make certain to be miles away during product development. The required volumes of component staging would yield a lightning bolt effect.
||I like it.
The problem would be staging and choreography. Instead of a single launch platform and the whole sky as your canvas, you've opted for a stage the size of the grand canyon as your platform with a single target.
||Would it be safer if it was not a fluid, but more of an explosive rope?
||As [bigsleep] says, having multiple ignition sites where outside ones have charges arranged to shoot back at centre column site would work to create the desired effect. Simplier to calculate and set up.
||I'd add something to that: infuse the rope not only
with colorful incendiary stuff, but with blobs of the
stuff at increments along the rope that would blow
up in sequence as the rope burned.
||So you'd shoot the round that would then unfurl the
rope behind it, when it completely uncoiled the end
of the rope attached to the round would be ignited.
||The rope burns backwards
towards the launch point hitting the regularly spaced
every couple of feet along the path.
||These mini fireworks could be progressively smaller,
biggest at the point where the rope attaches to the
round, smallest at the end of the rope at the center,
the original point of release. The effect of
this would be a large explosion followed by
progressively smaller explosions that would REALLY
give the impression that a large explosion is actually
imploding or compacting back into it's point of origin.
||Add different colors to further differentiate big
outside explosions to small inside explosions and
you'd get this "shrinking fireball" effect.
||The explosions would have to be very short so as not
to obscure the explosion sequences traveling back
towards the core. Bright flashes rather than
starbursts would probably suffice.
||You could even have the bus from which the rounds
all shot out from explode in spectacular fashion given
a compression/explosion effect, like a sun igniting
due to gravity or something.
What I'm picturing would be breathtaking.