add 2020 batch to index

[web/gag.com] / rockets / research / 2017-batch-02.mdwn

diff --git a/rockets/research/2017-batch-02.mdwn b/rockets/research/2017-batch-02.mdwn
index faabcef18f70628a9142bf2e56dcfc57196367f9..65ef4121ce4d18d89bdbcffcc256b39a1199b008 100755 (executable)
--- a/rockets/research/2017-batch-02.mdwn
+++ b/rockets/research/2017-batch-02.mdwn
@@ -12,8 +12,8 @@ For our first attempt, we made up a 10g batch with the following formula:
 * 7% magnesium powder, 0.70g
 * 1% air float charcoal, 0.10g
 * 24% West Systems 105+205 epoxy, 2.40g
-** 2.01g 105 resin
-** 0.39g 205 hardener
+    * 2.01g 105 resin
+    * 0.39g 205 hardener
 
 Two folded papers were used to weigh out the KNO3 in one, and a mixture of
 the magnesium powder and charcoal in another.  The epoxy was mixed in a small 
@@ -41,6 +41,11 @@ These igniters were made on 17 May 2017.
 
 ## Results ##
 
+They didn't work.  The basic problem is that the pyrogen on the Chinese 
+e-matches is aggressive enough that they blow the end of the epoxy fire
+cylinder apart without igniting the rest of the igniter.  Next time we'll
+try with home-made bridge wires on shooter wire.
+
 ## Observations ##
 
 A 10g batch was just enough to make up 6 igniters, and the pot life seemed