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author
Bdale Garbee
<bdale@gag.com>
Mon, 29 Jun 2015 04:18:29 +0000
(22:18 -0600)
committer
Bdale Garbee
<bdale@gag.com>
Mon, 29 Jun 2015 04:18:29 +0000
(22:18 -0600)
rockets/research/test5.mdwn
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diff --git
a/rockets/research/test5.mdwn
b/rockets/research/test5.mdwn
index 23f80a1ce2cf9c9f5b539fd5786ea198a1d65595..4f2a59c6d642087c27ae8cdae8ed2ba220845e64 100755
(executable)
--- a/
rockets/research/test5.mdwn
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rockets/research/test5.mdwn
@@
-2,12
+2,12
@@
Trying again using KNSO with our new casting bases. We also have a real
eye-dropper now for measuring the surfactant. 4 38mm grains of
Trying again using KNSO with our new casting bases. We also have a real
eye-dropper now for measuring the surfactant. 4 38mm grains of
-1.875" length, using formula of
+1.875" length,
250 gram batch
using formula of
* 65% KNO3
* 35% Sorbitol
* 1% red iron oxide
* 65% KNO3
* 35% Sorbitol
* 1% red iron oxide
-* 3 drops Polystep-B1
+* 3 drops Polystep-B1
(1 drop per 100g being the general idea)
## Process ##
## Process ##
@@
-81,7
+81,9
@@
point.
## Observations ##
## Observations ##
-Pour went really smoothly. One grain looked "perfect" with the propellant
+Pour went really smoothly. Easier than previous batches, perhaps due to
+a bit more surfactant, perhaps just getting better, perhaps due to putting
+the mandrels in post-pour. One grain looked "perfect" with the propellant
settled evenly and a couple mm of open gap at the top of the casting
tube. We think this one may have been slightly under-filled compared to
the others, all of which had some evidence of propellant sticking to the
settled evenly and a couple mm of open gap at the top of the casting
tube. We think this one may have been slightly under-filled compared to
the others, all of which had some evidence of propellant sticking to the