Awesome Amateur Rocket Launch
Posted 12 October 2011 - 11:34 AM
Potential efficiency is similar to Gas Generator cycle hydrocarbon engines. All of the ones I've seen are steel cases, which adds significant weight. Aluminum is out because at those temperatures, Aluminum will burn.
Posted 12 October 2011 - 09:23 PM
I admit I'm not up on the state of the art in amateur rocketry. Is anyone using guidance? Vectored nozzles? Roll control? I sure would like to see amateur solutions to those things!
Posted 12 October 2011 - 10:19 PM
2 of those abilities you stated seemed to be a bit on display in this video as I watched it.
Once again,any guess what do you think this little fun filled experiment might have really cost?
Posted 15 October 2011 - 02:35 AM
Propellant is Ammonium Perchlorate Composite Propellant (APCP)
in a rubber binder with 8% metal powder using a Fin-O-Cyl
The first model rocket I made back in school (much much smaller than this one) used the perchlorate / aluminum mix for fuel. It burns with a beautiful brilliant white flame. There's almost no residue left.
Also, it's so hot it roasted the bottom of the rocket's tube. The motor itself (a shotgun shell) was destroyed.
Posted 16 October 2011 - 05:15 AM
Posted 20 October 2011 - 10:06 PM
What got me out of continuing it was the political infighting from the rocketry associations and the sheer cost of building and flying the things.
Amateur astronomy is easier on the pocketbook, once you have your equipment in place.
Posted 30 January 2013 - 06:43 AM
Posted 01 February 2013 - 02:41 AM
My first thought regarding the 'stuff' appearing in the window was that it's condensation, not melted material.