From: Bdale Garbee Date: Thu, 1 Jun 2017 02:58:33 +0000 (-0600) Subject: clean up some file details X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=05cf527254885629b851ad9f56545d84d8c81dc4 clean up some file details --- diff --git a/rockets/research/2017-batch-02.mdwn b/rockets/research/2017-batch-02.mdwn index 9825e38..71add02 100755 --- a/rockets/research/2017-batch-02.mdwn +++ b/rockets/research/2017-batch-02.mdwn @@ -43,9 +43,8 @@ These igniters were made on 17 May 2017. 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. Might be worth -trying again using home-made bridge wires on shooter wire ends instead of -starting with a commercial e-match? +cylinder apart without igniting the rest of the igniter. Next time we'll +try with home-made bridge wires on shooter wire. ## Observations ## diff --git a/rockets/research/2017-batch-03.mdwn b/rockets/research/2017-batch-03.mdwn index b390854..00da1b0 100755 --- a/rockets/research/2017-batch-03.mdwn +++ b/rockets/research/2017-batch-03.mdwn @@ -18,6 +18,8 @@ Liner should be cut to 10.00" long for this 6-grain reload. ## Results ## +Average casting tube mass 1.13g. + * Grain 1, ?g gross, ?g net * Grain 2, ?g gross, ?g net * Grain 3, ?g gross, ?g net @@ -29,11 +31,7 @@ With a 10.00" liner, 14/64" nozzle throat, buna-n o-rings, simulation says this makes a 37% H-156, 208 Ns, with about a 1.2 sec burn. -
29mm 6-grain Erythritol #14
Rating:43% H-162Max Pressure:859 psi
Total Impulse:48.5 lbf·sSpecific Impulse:133 s
Max Thrust:46.4 lbfVolume Loading:70%
Average Thrust:36.4 lbfFuel Mass:5.82 oz
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29mm 6-grain Erythritol #14
Rating:43% H-162Max Pressure:5.92 MPa
Total Impulse:216 NsSpecific Impulse:133 s
Max Thrust:206 NVolume Loading:70%
Average Thrust:162 NFuel Mass:165 g
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29mm 6-grain Erythritol #14
Rating:43% H-162Max Pressure:5.92 MPa (859 psi)
Total Impulse:216 NsSpecific Impulse:133 s
Max Thrust:206 NVolume Loading:70%
Average Thrust:162 NFuel Mass:165 g
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