From: Bdale Garbee <bdale@gag.com>
Date: Mon, 1 Jun 2015 01:03:51 +0000 (-0600)
Subject: another test
X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=94cbcfd669bbd7985a8b3ea158279be3c232e765

another test
---

diff --git a/rockets/research/index.mdwn b/rockets/research/index.mdwn
index 5f438d4..f86500b 100755
--- a/rockets/research/index.mdwn
+++ b/rockets/research/index.mdwn
@@ -9,4 +9,5 @@
 
 ## Test Log ##
 
-* [Test 1](test1.html) - 30 May 2015 - 38mm 3-grain KNSO
+* [Test 2](test2.html) - 31 May 2015 - 4 38mm KNSO grains plus test strand
+* [Test 1](test1.html) - 30 May 2015 - 3 38mm KNSO grains plus test strand
diff --git a/rockets/research/test2.mdwn b/rockets/research/test2.mdwn
new file mode 100755
index 0000000..e14465e
--- /dev/null
+++ b/rockets/research/test2.mdwn
@@ -0,0 +1,29 @@
+# Test 1 #
+
+Trying again using the same formula as [test 1](test1.html), but different
+handling logistics for pouring the grains.
+
+[Tru-Core](http://www.rocketsaway.com/html/casting_sets.html) 
+casting set with two bases each set up with 0.5 inch mandrels.  Four pieces 
+of casting tube cut to grain length of 1.875 inches.
+
+## Process ##
+
+The grains were cast on 31 May 2015.
+
+The multi-cooker was preheated to about 250F with the lid on.  Temp was
+increased during melting to 275F indicated.
+
+When the 200g batch of propellant was nearly ready to pour, we put in enough
+bits from the void-plagued grains of test 1 to re-melt that we'd be able to
+cast 4 grains plus a burn rate test rod.
+
+We poured one grain at a time, leaving the multi-cooker heating and putting
+the lid back on between grains to keep the propellant at temperature.  The
+first 3 grains poured pretty easily, the viscosity was higher when pouring
+the last grain so not clear how well it filled.  Two grains stacked on each
+mandrel, for 4 grains total.  That left enough to form a test burn rod about
+3/8" diameter and in excess of 4" long.
+
+## Observations ##
+