From: Bdale Garbee <bdale@gag.com>
Date: Thu, 10 Sep 2020 02:53:52 +0000 (-0600)
Subject: add info about cato flight at Airfest
X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=ec6088e7aecbf6be2cf0d437f9609bccce465b82

add info about cato flight at Airfest
---

diff --git a/rockets/research/2020-test-1.mdwn b/rockets/research/2020-test-1.mdwn
new file mode 100755
index 0000000..c350a8c
--- /dev/null
+++ b/rockets/research/2020-test-1.mdwn
@@ -0,0 +1,20 @@
+# Test 2020-1 #
+
+8 grain 75mm sorbitol motor with pyrodex pellet ignition in 4-inch Wildman
+re-rebuilt airframe flown on 7 September 2020 at Airfest in Argonia, KS.
+
+48" purple "Woody" case, Loki #58 (long) nozzle with 2 o-rings, customized
+forward bulkhead with 1600psi pressure sensor and EasyMotor prototype.
+
+The original model using Kuker's Motorsim said this should be a 43% M-2690 
+with a slightly progressive burn about 2.5 seconds long, using 5355g of 
+propellant or 73% volume loading, and a max pressure of 825 psi.
+
+After casting and weighing the grains, we ended up with a net propellant
+mass of 4924g.  The grains seemed to have fairly uniform density.
+
+## Results ##
+
+Motor cato'd just off the rail on pad 61.  Airframe and electronics a 
+total loss.
+
diff --git a/rockets/research/2020.08.31.mdwn b/rockets/research/2020.08.31.mdwn
index 7d95c76..20295d8 100755
--- a/rockets/research/2020.08.31.mdwn
+++ b/rockets/research/2020.08.31.mdwn
@@ -52,5 +52,3 @@ or about 616g per grain, which is 92% of what Kuker's simulator projected.
 Borrowed Terry's Loke #58 nozzle, which is a few thousandths over-sized.
 
 The as-built motor is projected to be a 30% M-2300 or so.
-
-Flight attempted at Airfest 2020 on Monday morning, CATO just off the rail.
diff --git a/rockets/research/index.mdwn b/rockets/research/index.mdwn
index 8c5ca0b..6421c75 100755
--- a/rockets/research/index.mdwn
+++ b/rockets/research/index.mdwn
@@ -12,6 +12,7 @@
 ### 2020 ###
 
 * [2020 batch 01](2020.08.31.html) - 31 August 2020 - 8 75mm KNSB grains
+* [2020 test 01](2020-test-1.html) - 7 September 2020 - 8-grain 75mm KNSB at Airfest
 
 ### 2019 ###