FullMetalJacket
January 9th, 2007, 12:51 PM
"i use the primer grains from .22 nail rams as sparkler powder when mixed with a oxidiser and Mg powder with some MnO2 and ground charcoal for safety."
"these are very cautiously thought out ;)
the i also you super finely ground black gunpowder as a propellant and remove the smokeless powder and charcoal from the equation.
it produces a three centimeter long flame that is hot enough to literally weld with and so intensely white you cant even think about looking at it.
essentially the Mg gets melted into a spray by the immense heat of the initial combustants igniting then the MnO2 hitting the carbon and turning it into CO2
2MnO2 + C ----> Mn2O + CO2
this way the black powder or the smokeless combined with charcoal produces extreme heats but at a constant none explosive rate.
the Mg melts or comes close but in ether case the ejected material forms a conical flame like a torch with ether a purple or orange out flame depending if i added a potassium or sodium based oxidiser and a intense inner flame that is dazzling with a shade 10 glass in front of your eyes.
i use them to illuminate areas while looking for things at night and such"
These are two statements made by a chick on another forum of mine, she has some scientific knowledge, but this just seems very flaky to me. I've asked her about ratios but she hasn't responded yet... My personal knowledge seems to suggest that the 'inner cone/outer cone' flame colour bullshit is just that, bullshit, because if the Mg was burning and not exploding, like powdered Mg and powerful oxidisers tend to to, the colour imparted by the Mg would overpower that of the cation.
Furthermore, she states that gunpowder(sic) needs to be very finely ground in order to propel things... Whilst by personal field of expertise is HE and BC, I'm still quite well versed in pure pyro, and I know for a fact that to use BP as a propellant it has to be granulated. Or am I wrong?
Any word from the judges? It just seems like a hodgepodge of rules of thumb and factoids that she may have picked up reading on sciency-type forums, coupled with a probably quite good knowledge of science in general, applied to try and create some strange super-fountain composition... And her cause is not helped from the way she heaps personal attacks on me.
But anyway, my point is: is there any truth to this? Have you ever encountered similar compositions?
"these are very cautiously thought out ;)
the i also you super finely ground black gunpowder as a propellant and remove the smokeless powder and charcoal from the equation.
it produces a three centimeter long flame that is hot enough to literally weld with and so intensely white you cant even think about looking at it.
essentially the Mg gets melted into a spray by the immense heat of the initial combustants igniting then the MnO2 hitting the carbon and turning it into CO2
2MnO2 + C ----> Mn2O + CO2
this way the black powder or the smokeless combined with charcoal produces extreme heats but at a constant none explosive rate.
the Mg melts or comes close but in ether case the ejected material forms a conical flame like a torch with ether a purple or orange out flame depending if i added a potassium or sodium based oxidiser and a intense inner flame that is dazzling with a shade 10 glass in front of your eyes.
i use them to illuminate areas while looking for things at night and such"
These are two statements made by a chick on another forum of mine, she has some scientific knowledge, but this just seems very flaky to me. I've asked her about ratios but she hasn't responded yet... My personal knowledge seems to suggest that the 'inner cone/outer cone' flame colour bullshit is just that, bullshit, because if the Mg was burning and not exploding, like powdered Mg and powerful oxidisers tend to to, the colour imparted by the Mg would overpower that of the cation.
Furthermore, she states that gunpowder(sic) needs to be very finely ground in order to propel things... Whilst by personal field of expertise is HE and BC, I'm still quite well versed in pure pyro, and I know for a fact that to use BP as a propellant it has to be granulated. Or am I wrong?
Any word from the judges? It just seems like a hodgepodge of rules of thumb and factoids that she may have picked up reading on sciency-type forums, coupled with a probably quite good knowledge of science in general, applied to try and create some strange super-fountain composition... And her cause is not helped from the way she heaps personal attacks on me.
But anyway, my point is: is there any truth to this? Have you ever encountered similar compositions?