X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=rockets%2Fresearch%2F2017-batch-02.mdwn;h=65ef4121ce4d18d89bdbcffcc256b39a1199b008;hb=a1b30b23fc5beceeb58c55eba8d887165ad8a9ad;hp=faabcef18f70628a9142bf2e56dcfc57196367f9;hpb=f9642d1ca08b912e116227e22336451b2ef7af42;p=web%2Fgag.com diff --git a/rockets/research/2017-batch-02.mdwn b/rockets/research/2017-batch-02.mdwn index faabcef..65ef412 100755 --- 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