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Backyard Ballistics This forum is dedicated to the safe teaching and responsible handling of high and low explosives. You will not find any information on how to make "bombs" or any such device(s) . Backyard ballistics will teach you the science and the art of pyrotechnics and how to manufacture and use explosives/pyrotechnics safely and responsibly. Backyard ballistics is also a haven for rocketry and pneumatic cannons. All information contained within this forum is for educational purposes ONLY. Totse does not accept responsiblity for any incident involving the use of the information contained within this forum.

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 #1 
Old 2007-12-29, 04:42
napalm113 napalm113 is offline
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Default rockets or flares, what do you think is safer to fire from the shoulder?

rockets or flares, what do you think is safer to fire from the shoulder?

I'm more or less trying to make a sub caliber kit for my law tube. I'm contemplating either making several single shot flare launchers with a sticky match fuse hooked up to a primer or some sort of small rocket flare.
 #2 
Old 2007-12-29, 05:29
Moderator
 
directly over the center of th
Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

hurm ... exhuast gases in the face are always lovly in the morning you know the flesh peeling and bacon/burnt hair smell .... that is if you can get one of 2 things to happen either A get a engine to burn under 3/4 a second or you have a main that burns at 3/4 to lob then delay and fire a main

not to mention CATO's suck
 #3 
Old 2007-12-29, 05:53
psyco_1322 psyco_1322 is offline
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Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

You could launch it out pneumatically after lighting a small delay segment in the engine so that it takes off after it gets out a ways. Thats pretty much what warweed said. But if indeed you can produce some near perfect rockets that dont CATO in your face you still have that tail on the rocket that can be several feet long with ease. I seen a video of a 1lb(3/4")nozzle-less rocket lifting 500g without any trouble and the flame front (correct term?) was still touching the ground when the rocket was a good 15-20 feet in the air! Thats not something youd want in your face for sure. You might consider using a star comp that has a minimal tail, something along the lines of a organic colored star.
 #4 
Old 2007-12-29, 11:40
Von Bass Von Bass is offline
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Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

http://i190.photobucket.com/albums/z132/benzowarrior/Untitled-1.gif

That would be my basic plan, although I would probably be more tempted to completely change the plan and fire it like a mortar with an e-match from a safe distance.

If you're planning on making the engines to go in there, as pysco says, try and find something with a minimal tail - KNO3/Sucrose often has a shorter tail than BP & charcoal compositions.

EDIT; sorry to be spamming this with images, but I just had a look through my rocket videos, and found a good example of where the tail could be - this, I think, is one of Al93535 from apc, so credit for the vid frames goes to him.

http://i190.photobucket.com/albums/z132/benzowarrior/rockettail.gif
 #5 
Old 2008-01-09, 02:42
SHIMSTAR SHIMSTAR is offline
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Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

ive made a launcher myself but never got to firing it.
heres a youtube vid. Its powered by D class motors. the fins are springloaded and wrapped with a kind of sabot
http://www.youtube.com/watch?v=M4z4_C861LU
 #6 
Old 2008-01-09, 02:48
nuclearrabbit nuclearrabbit is offline
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Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

Two or three years ago I made a shoulder fired bottle rocket launcher. Aluminium pipe resonates at such a terrible pitch when one explodes inside right next to year ear.
 #7 
Old 2008-01-09, 22:54
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I live in Heresy
Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

Quote:
Originally Posted by SHIMSTAR
ive made a launcher myself but never got to firing it.
heres a youtube vid. Its powered by D class motors. the fins are springloaded and wrapped with a kind of sabot
http://www.youtube.com/watch?v=M4z4_C861LU


Nice!
 #8 
Old 2008-01-10, 10:21
Moderator
 
directly over the center of th
Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

care to take a few close up pics of the fins them selves ?
:)
EDIT:
Just realised i have been with totse for 6 years now as a active member ... well 2237 days
 #9 
Old 2008-01-13, 05:25
SHIMSTAR SHIMSTAR is offline
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Default Re: rockets or flares, what do you think is safer to fire from the shoulder?

http://pic1.picturetrail.com/VOL1130/3850820/14434969/216417062.jpg
those are three small brass tubes. the first and third tubes are epoxied to the rocket body tube and the middle is a free tube able to rotate. there are small torque springs epoxied into the small brass tubes.

_______ ________ ______
______\/\/\/_______/\/\/\/______

if you have a hard time visualizing i can model it in cad
 
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