I use the dissolve and recrystallize method pretty much the same as what
you use. The only other additives that I use are on occasion is iron oxide
which I've heard some whispers that it also helps soften fuel. I use
ethylene glycol(antifreeze) to make the fuel softer and easier to work
with. I've tested it in many motors and it has no apparent effect on burn
rate. Here is a link to the tutorial where I show how my motor is made and
one where I launch the motors: Rocket tutorials:
http://www.youtube.com/playlist?list=PLeHFxN_hg2SbQogFc1hS8Skx2jxm3IK-0
https://youtu.be/moRojviaXrg
Nikolai nielsen
On 18 Sep 2017 4:28 AM, <jyawn@xxxxxxxx> wrote:
Nikolai: Apologies for the delay... Thanks to hurricane Irma, my internet
has been down for awhile.
I really don't know the answer to your question... I've never used
propylene glycol, and have rarely used any sugar other than sucrose... or
dextrose when I need to be TRA-compliant.
But I am intrigued, and would like to know how this works for you.
What method do you use to melt the KNSU? Are there other additives?
Have you tested this propellant in a motor?
Expiring minds want to know!
Jimmy
Jimmy, i was making some of my usual KNSU fuel of a 65/35 ratio with 4%
propelene glycol as a surfactant and i was working it relatively slowly
and
it felt a bit stiffer than it usually is and i then started to vigorously
smoosh the fuel together and it softened up which made me think of your
taffy pull section in your skillet Rcandy page
http://www.jamesyawn.net/skillet/large/index.html . i was wandering
whether
this would also apply to other sugars like the sorbitol that others use.
Nikolai Nielsen
