firetech Posted December 24, 2008 Share Posted December 24, 2008 Does anyone know any good comps for aluminum rocket fuel with bp chems that makes white sparks or a nice white flame?Thanks Link to comment Share on other sites More sharing options...
Mumbles Posted December 24, 2008 Share Posted December 24, 2008 I've heard just taking your normal fuel and adding 5-10% atomized aluminum adds a very nice white flame and a bit of a tail. Coarser flitter type Al would probably give a better tail. The glitter sized atomized aluminum does make the fuel a bit hotter, so you might not want to use rockets that are already on the verge of CATO. Moved to the rocketry section. Link to comment Share on other sites More sharing options...
pyrogeorge Posted December 24, 2008 Share Posted December 24, 2008 can i use Al flakes??around 10-20 mesh..? I will use it in comets. Link to comment Share on other sites More sharing options...
TheSidewinder Posted December 25, 2008 Share Posted December 25, 2008 That mesh might be a BIT too coarse for what you want to do. The Al will burn, yes, but it might not be dense enough within the grain to make much of a tail. But, like many things pyro, give it a try! It won't hurt and might look very good. Be sure your Al is coated to prevent an Al-Nitrate reaction. Link to comment Share on other sites More sharing options...
Mumbles Posted December 25, 2008 Share Posted December 25, 2008 These rockets are pressed dry. Unless you're storing them for years, or have terrible quality chemicals, there is no chance of a reaction. If it makes you feel safer, you can add a little boric acid. This reminds me. You should only press rockets containing aluminum. The Al will increase the sensitivity. Link to comment Share on other sites More sharing options...
qwezxc12 Posted December 25, 2008 Share Posted December 25, 2008 firetech, I've attached some videos of 1lb endburner rockets I made a while ago to test various metals in the BP. All the rockets were identical in nozzle size and construction, except for the -350 flake one, which had a little more fuel than the rest. As you can see the different grades of Al do increase the combustion temp and whiten the flame, but do not contribute much to any tail. The flitter grade Al I used did make a little bit of spark, but until you get into Fe, Fe/Ti, and Ti flake or sponge, there's not much of a tail. The -350 flake and 5um spherical Al do add quite a bit of power to a standard BP rocket - I've made many a "bomb-on-a-stick" dialing in Al% and nozzle size...like mumbles said, adding Al to a rocket on the edge of CATO will ensure its demise. Have fun experimenting. 1_NP_Meal.wmv 2_NP_5mic_Al.wmv 4_NP_350m_Al.wmv 5_NP_Fe.wmv 3_NP_Al_Flitter.wmv 6_NP_FeTi.wmv 7_NP_Ti_Flake.wmv 8_NP_Ti_Sponge.wmv Link to comment Share on other sites More sharing options...
psyco_1322 Posted December 26, 2008 Share Posted December 26, 2008 Those are some pretty spirally rockets Link to comment Share on other sites More sharing options...
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