My First Post(rockets)
#31
Posted 30 September 2003 - 07:32 PM
kno3: 75
bbq charcoal: 15
sulfer: 10
The normal BP mix but with lower quality charcoal, the core width/depth were the same as with the kno3/sucrose rocket.
And I must say they performed excellent!
They had a nice long tail when going up.
I've got an video of the test, if anybody is interested to put it on their site
just tell me I'll mail it to you.
#32
Posted 30 September 2003 - 10:03 PM
Incidentally, has anyone tried sucrose & KN03 with sulphur as a binder to make propellent? It certainly works some magic with first fire mix.
-jim
#33
Posted 01 October 2003 - 05:36 PM
Do you mean the 5 cent sugar comp 63/27/10 ?
What did you have in mind, mixing it all together and then heat to melt the sulfer(112 C)?
I don't know what the viscosity of this melted mixture is,(I never tried it)but I think it will remain pretty thick and you will have a hard time handling it .
If this is what you mean ofcource .
One mixture that involves melting sulfer that I know is: yellow powder
I think you have allready seen it somewhere, 60 gram's kno3, 40 gram's potassium carbonate, 20 gram's sulfer.
Put it all together and gently heat untill the mixture is melted.
This gives an flashlike! composition and works really great for burstcharges.
#34
Posted 01 October 2003 - 06:25 PM
#35
Posted 01 October 2003 - 07:17 PM
#36
Posted 01 October 2003 - 08:00 PM
#37
Posted 01 October 2003 - 09:26 PM
the carbonate produces polysulphides
K2CO3 + 8S => K2S3 + K2S4 + SO2 + CO2
there you go
you heat them below nitrate decomposition temp < 300C and reaction occurs
i think it is called fulminating gold
#38
Posted 02 October 2003 - 07:55 AM
Do you know how many accidents happened with this reaction? Are you working in a lab where you have temperature control? Do you have a barrier to keep you away from the mixture?
This is worse then mixing flash. Stop this!
#39
Posted 02 October 2003 - 02:20 PM
#40
Posted 02 October 2003 - 02:36 PM
#41
Posted 02 October 2003 - 03:31 PM
#42
Posted 02 October 2003 - 04:14 PM
Now, how about used granulated black powder? It does the burst job beautifully for large shells, and a reasonable job for smaller ones. H3 is easy to get and break small shells better then most commercial items today. Why oh why do you have to use dangerous composition like yellow powder?
Answer this: 1) Do you know the temperature area where the mixture bound?
2) Do you have the ability of maintaining that range of temperature for x amount of minutes with little fluctuations?
3) Do you have unmanned mixing capabilities?
4) Do you have a blast screen?
5) Are you capable of using the mixture in a safe manner?
I assume that if you can’t invest in perchlorate or aluminium then you probably don’t invest in proper facilities as well.
I had access to all of the above and I didn’t go near this formulation. You think you know better? Be my guest
#43
Posted 02 October 2003 - 05:39 PM
Yes I do have temperature control.
Yes I know the temperature it melts (around 112 celsius).
I have made several batches and had no problems so far,(fjew I'm glad).
After the mixture is melted it turns dark orange, then I remove it from the heat directly!
I think it will only ignite/explode when you continu heating it to a higher temperature until it turns black in color.
I know extreme caution should be taken when handling this mixture.
#44
Posted 02 October 2003 - 09:45 PM
#45
Posted 03 October 2003 - 04:26 PM
Edited by PanMaster, 03 October 2003 - 07:05 PM.
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