From: Bdale Garbee <bdale@gag.com>
Date: Wed, 2 Sep 2015 19:03:08 +0000 (-0600)
Subject: initial data on test 11 added
X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=e63b35e1d84defb4d0c092c9d2a5adeaea3562d0

initial data on test 11 added
---

diff --git a/rockets/research/index.mdwn b/rockets/research/index.mdwn
index 67d66fe..e721992 100755
--- a/rockets/research/index.mdwn
+++ b/rockets/research/index.mdwn
@@ -9,6 +9,7 @@
 
 ## Test Log ##
 
+* [Test 11](test10.html) - 1 September 2015 - 4 54mm KNSO grains
 * [Test 10](test10.html) - 30 August 2015 - 4 38mm KNSO grains
 * [Test 9](test9.html) - 29 August 2015 - 4 38mm KNSO grains
 * [Test 8](test8.html) - 8 July 2015 - 12 38mm KNER grains
diff --git a/rockets/research/test11.mdwn b/rockets/research/test11.mdwn
new file mode 100755
index 0000000..da40807
--- /dev/null
+++ b/rockets/research/test11.mdwn
@@ -0,0 +1,33 @@
+# Test 11 #
+
+Our first attempt at making 54mm grains with sorbitol.  Grain length 3.25", 
+core diameter 0.5" (only mandrels on hand).  Casting tubes from 
+[ARR](http://www.alwaysreadyrocketry.com/), machined a new set of hardwood
+casting stands on our CNC router, drilled PVC pipe caps for upper mandrel
+centering.
+
+The formula used is the same we've been using with sorbitol, but in an 875g
+batch this time:
+
+* 65% KNO3, 568.75g
+* 35% Sorbitol, 306.25g
+* 1% red iron oxide, 8.75g, added after melt
+* 10 drops Polystep-B1, added before pour using eye dropper
+
+Robert noted that tamping down the material in the grains required a tweak
+to his process for 38mm, since the larger casting tubes and greater propellant
+mass meant having to hold everything together more solidly.  We also noted
+that there was some variation (a mm or so?) in my casting tube lengths, so
+getting them uniformly filled was a bit fiddly.
+
+These grains were cast on 1 September 2015.
+
+## Results ##
+
+* Grain 1, ?g net
+* Grain 2, ?g net
+* Grain 3, ?g net
+* Grain 4, ?g net
+
+## Observations ##
+