From: Bdale Garbee Date: Sat, 3 Jun 2017 04:38:02 +0000 (-0600) Subject: capture grain masses from batch 4, skeleton files for tomorrow's flights X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=f8a923245d05b3f8f2e12b39e7a28253aaea26fe capture grain masses from batch 4, skeleton files for tomorrow's flights --- diff --git a/rockets/research/2017-batch-04.mdwn b/rockets/research/2017-batch-04.mdwn index 99be728..ed976cb 100755 --- a/rockets/research/2017-batch-04.mdwn +++ b/rockets/research/2017-batch-04.mdwn @@ -35,28 +35,26 @@ Simulation says: ## Results ## -Average casting tube mass 1.25g. +Average 29mm casting tube mass 1.25g. 29mm grains -* Grain 1, ?g gross, ?g net -* Grain 2, ?g gross, ?g net -* Grain 3, ?g gross, ?g net -* Grain 4, ?g gross, ?g net +* Grain 1, 29.3g gross, 28.05g net +* Grain 2, 29.1g gross, 27.85g net +* Grain 3, 28.9g gross, 27.65g net +* Grain 4, 28.5g gross, 27.25g net -Total of ?g propellant, vs 122g simulated. +Total of 110.8g propellant, vs 122g simulated. With a 7.40" liner, 14/64" nozzle throat, buna-n o-rings, simulation says this reload will be a 99% G-180, 159 Ns, with about an 0.8 sec burn. 54mm grains -* Grain 5, ?g gross, ?g net -* Grain 6, ?g gross, ?g net -* Grain 7, ?g gross, ?g net -* Grain 8, ?g gross, ?g net -* Grain 9, ?g gross, ?g net -* Grain 10, ?g gross, ?g net - -Total of ?g propellant, vs 122g simulated. +* Grain 5, 184.6g gross, ?g net +* Grain 6, 183.3g gross, ?g net +* Grain 7, 186.2g gross, ?g net +* Grain 8, 182.6g gross, ?g net (canted - casting tube tilted at pour time) +* Grain 9, 184.0g gross, ?g net +* Grain 10, 180.5g gross, ?g net diff --git a/rockets/research/2017-test-05.mdwn b/rockets/research/2017-test-05.mdwn new file mode 100755 index 0000000..250f080 --- /dev/null +++ b/rockets/research/2017-test-05.mdwn @@ -0,0 +1,14 @@ +# Test 2017-05 # + +3 grain 54mm sorbitol motor + +With a 10.250" liner, 8.9mm nozzle throat, buna-n o-rings, simulation says +this is a 25% J-432, 763 Ns, with about a 1.6 sec burn + +* Grain 2017-01-08, 182.6g gross, ?g net +* Grain 2017-01-09, 184.0g gross, ?g net +* Grain 2017-01-10, 180.5g gross, ?g net + +## Results ## + +Flight data logged as ? sn ?, flight ?. diff --git a/rockets/research/2017-test-06.mdwn b/rockets/research/2017-test-06.mdwn new file mode 100755 index 0000000..a3b95dc --- /dev/null +++ b/rockets/research/2017-test-06.mdwn @@ -0,0 +1,23 @@ +# Test 2017-05 # + +4 grain 29mm sorbitol motor + +With a 7.40" liner, 14/64" nozzle throat, buna-n o-rings, simulation says +this reload will be a 99% G-180, 159 Ns, with about an 0.8 sec burn. + +

+ +
29mm 4-grain Sorbitol #14
Rating:99% G-180Max Pressure:6.47 MPa (939 psi)
Total Impulse:159 NsSpecific Impulse:133 s
Max Thrust:228 NVolume Loading:69%
Average Thrust:180 NFuel Mass:122 g
null
+ +

+ +* Grain 2017-04-01, 29.3g gross, 28.05g net +* Grain 2017-04-02, 29.1g gross, 27.85g net +* Grain 2017-04-03, 28.9g gross, 27.65g net +* Grain 2017-04-04, 28.5g gross, 27.25g net + +Total of 110.8g propellant, vs 122g simulated. + +## Results ## + +Flight data logged as ? sn ?, flight ?.