X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=blobdiff_plain;f=rockets%2Fresearch%2F2019.01.08.mdwn;fp=rockets%2Fresearch%2F2019.01.08.mdwn;h=2d43d37e5122221ee1cb42849aa500dbe517c014;hp=0000000000000000000000000000000000000000;hb=370b5894994bd638993ce0adbc37bdfb198fa44e;hpb=2297feecab2d9ee0b9ca01f246aef2dc4da7592e diff --git a/rockets/research/2019.01.08.mdwn b/rockets/research/2019.01.08.mdwn new file mode 100755 index 0000000..2d43d37 --- /dev/null +++ b/rockets/research/2019.01.08.mdwn @@ -0,0 +1,20 @@ +# Batch 2019.01.08 # + +4 Terry-length Everyclear grains for 54mm cases, with 0.5 inch cores, +cast as two 6-inch-long double grains then cut and trimmed. + +This was my second time mixing APCP propellant. Again used the 4.5qt mixer +and hand packed with no vacuum processing. Same formula as yesterday + +These grains were cast on 2019-01-08. + +## Results ## + +The updated batch size was just right, there was a bit of excess propellant +so we can make density and burn rate measurements after cure. + +* Grain 1, gross, g casting tube, g net propellant +* Grain 2, gross, g casting tube, g net propellant +* Grain 3, gross, g casting tube, g net propellant +* Grain 4, gross, g casting tube, g net propellant +