[SS-Propellant] Possible propellant casting concept

Rich Nakka richnakka at rogers.com
Sat Feb 11 21:08:41 PST 2006


Greetings Team,
I"ve given a lot of thought to possible improvements to the two methods 
under consideration (Tucker-Rider & Krech-Nakka), and I've put down my 
ideas on paper. Note, this sketch represents only a concept. It is 
beginning to appear (based on Serge's and Dustins enlightening 
experiments) that stirring of the slurry would be needed, period. I'll 
confirm (?)  this when I get my vacuum pump and continue the testing of 
the evaporation method.

The method illustrated could be adapted to either liquid or powdered 
form of sorbitol & KNO3. If powdered form is used, a hopper would 
instead feed the materials into the mixing drum.

Based on a 15 minute mixing cycle, a 3 kg batch size, and continual 
replenishment of the holding tanks, the twelve 34 kg. segments could be 
cast in 34/3 * 0.25 * 12 = 34 hours. If two units are used, the time 
could be cut in half. And it'd be a wise approach to use two units in 
case one breaks down irrepairably.

Let's discuss this concept...have I overlooked any major issues? Is this 
concpet practical? Ideas for improvement? Simplification?

Richard
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