How high are fireworks?

Jose wrote:

Fireworks go up to 1500 feet in the air.

If they routinely went that high, wouldn't there be NOTAMs across the
country mentioning the times and location of various shows? It seems to me
that 1,500 ft AGL is definitely a hazard to aircraft.

My thoughts while watching a mid-sized show from the ground last night was
that none got about 500 feet.

--
Peter


















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That sounds about right. As a rough rule of thumb, mortar-fired
firework shells go up about 100 feet per inch of diameter. Many
small-to-medium municipal shows don't shoot anything above 6" in
diameter, because larger mortars have to be buried for most of their
lenght, while 6" tubes (or smaller) can be set above ground.

Larger shows will include 8-12" shells, and even larger shells are
available (though they don't see a lot of use).

"Gary" wrote in message
oups.com...
That sounds about right. As a rough rule of thumb, mortar-fired
firework shells go up about 100 feet per inch of diameter.

At our recent fireworks, (pretty good sized display) It seemed to me, that
the shells took about 6 seconds, from launch to explosion. If they were
nearly stopped, and about to come back down, it would work out (using math)
to 576 feet.
--
Jim in NC

"Gary" wrote in message
oups.com...
That sounds about right. As a rough rule of thumb, mortar-fired
firework shells go up about 100 feet per inch of diameter. Many
small-to-medium municipal shows don't shoot anything above 6" in
diameter, because larger mortars have to be buried for most of their
lenght, while 6" tubes (or smaller) can be set above ground.

Larger shows will include 8-12" shells, and even larger shells are
available (though they don't see a lot of use).


I helped a guy build some quite large ones few years back, the coolest ones
were the 5lbs of calf's milk and 1lb of flash powder in the center. Man that
powdered milk can burn for a long time. he did the show in Wildrose, ND
"rostins thunder & lightning show" something like that.