From: Bdale Garbee Date: Tue, 25 Jun 2019 03:20:41 +0000 (-0600) Subject: lose the AP-specific cruft in latest batch skeleton X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=274c7bf6cc3aa82547872f90df044c29901bc290;ds=sidebyside lose the AP-specific cruft in latest batch skeleton --- diff --git a/rockets/research/2019.06.21.mdwn b/rockets/research/2019.06.21.mdwn index fdf191d..0037ea6 100755 --- a/rockets/research/2019.06.21.mdwn +++ b/rockets/research/2019.06.21.mdwn @@ -16,31 +16,25 @@ These grains were cast on 2019-06-21. ## Results ## -The batch size was pretty good, there was a bit of excess propellant in each -batch so we can make density and burn rate measurements after cure. The excess -weighed in at g after cure. - -Grains were cut, core drilled to 0.625", and sanded more or less ala Terry's -process. In the data below, lengths are a bit approximate due to imperfectly -squared ends, gross masses are precise using my new 600g by 0.01g scale! - Batch with RIO: -* Grain 1, " long, g gross, g casting tube, g net -* Grain 2, " long, g gross, g casting tube, g net -* Grain 3, " long, g gross, g casting tube, g net -* Grain 4, " long, g gross, g casting tube, g net -* Grain 5, " long, g gross, g casting tube, g net -* Grain 6, " long, g gross, g casting tube, g net +* Grain 1, " long, 0.5" core, g gross, g casting tube, g net +* Grain 2, " long, 0.5" core, g gross, g casting tube, g net +* Grain 3, " long, 0.5" core, g gross, g casting tube, g net + +* Grain 4, " long, 0.625" core, g gross, g casting tube, g net +* Grain 5, " long, 0.625" core, g gross, g casting tube, g net +* Grain 6, " long, 0.625" core, g gross, g casting tube, g net Batch without RIO: -* Grain 7, " long, g gross, g casting tube, g net -* Grain 8, " long, g gross, g casting tube, g net -* Grain 9, " long, g gross, g casting tube, g net -* Grain 10, " long, g gross, g casting tube, g net -* Grain 11, " long, g gross, g casting tube, g net -* Grain 12, " long, g gross, g casting tube, g net +* Grain 7, " long, 0.5" core, g gross, g casting tube, g net +* Grain 8, " long, 0.5" core, g gross, g casting tube, g net +* Grain 9, " long, 0.5" core, g gross, g casting tube, g net + +* Grain 10, " long, 0.625" core, g gross, g casting tube, g net +* Grain 11, " long, 0.625" core, g gross, g casting tube, g net +* Grain 12, " long, 0.625" core, g gross, g casting tube, g net The mass per unit length was within ?g/inch.