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[web/gag.com] / rockets / research / test1.mdwn

diff --git a/rockets/research/test1.mdwn b/rockets/research/test1.mdwn
index a57bebc469e0f6fb92a1dae985de5c3d1642f341..3fc11cbf8dd0c56fcb8fc60e54ab33e986f8dd6f 100755 (executable)
--- a/rockets/research/test1.mdwn
+++ b/rockets/research/test1.mdwn
@@ -28,6 +28,8 @@ good grain after saw / knife kerfs.
 
 ## Process ##
 
+The grains were cast on 30 May 2015.
+
 We measured out the potassium nitrate and sorbitol into a sealable plastic
 container and shook vigorously to break up the clumps in the sorbitol and
 get a good physical mix.  
@@ -56,3 +58,14 @@ actually.
 
 About 4 hours later, the card stock was pulled off the test strand, which
 proved to still be a bit on the pliable and "tacky" surface side.
+
+## Observations ##
+
+After casting, further reading on Nakka's site indicates initial melt is
+at about 91C, or 196F.  Fully melted at 125C, or 257F.  Discoloration at
+175C, or 347F.
+
+Nakka says wait 24 hours before trying to pull the core rod.  The propellant 
+will remain pliable after cooling, thus can be deformed if handled sooner. 
+
+