more stuffs

diff --git a/rockets/research/2018-batch-02.mdwn b/rockets/research/2018-batch-02.mdwn
index 12d7600176494ee0423ef4e60b9bcb286c48f642..eed99fe30f9c589e2ac7db5a23e05e867b050f25 100755 (executable)
--- a/rockets/research/2018-batch-02.mdwn
+++ b/rockets/research/2018-batch-02.mdwn
@@ -24,8 +24,11 @@ These grains were cast on 2018-12-15.
 
 ## Results ##
 
-* Grain 1, g gross, g casting tube, g net propellant
-* Grain 2, g gross, g casting tube, g net propellant
-* Grain 3, g gross, g casting tube, g net propellant
-* Grain 4, g gross, g casting tube, g net propellant
+Forgot to weigh casting tubes, using average from the next couple batches
+instead.  Grain 2 visibly under-filled.  
+
+* Grain 1, 195.5g gross, 5.8g casting tube, 189.7g net propellant
+* Grain 2, 192.6g gross, 5.8g casting tube, 186.8g net propellant
+* Grain 3, 195.3g gross, 5.8g casting tube, 189.5g net propellant
+* Grain 4, 201.6g gross, 5.8g casting tube, 195.8g net propellant
 

diff --git a/rockets/research/2018-batch-03.mdwn b/rockets/research/2018-batch-03.mdwn
index 2bccfd6b13a023379665cf21d455282055b4256e..13dbc3e9f04177f78d23218ec7984a5a6c991883 100755 (executable)
--- a/rockets/research/2018-batch-03.mdwn
+++ b/rockets/research/2018-batch-03.mdwn
@@ -21,8 +21,8 @@ These grains were cast on 2018-12-17.
 
 ## Results ##
 
-* Grain 1, g gross, 5.78g casting tube, g net propellant
-* Grain 2, g gross, 5.82g casting tube, g net propellant
-* Grain 3, g gross, 5.78g casting tube, g net propellant
-* Grain 4, g gross, 5.80g casting tube, g net propellant
+* Grain 1, 198.8g gross, 5.78g casting tube, 193.0g net propellant
+* Grain 2, 194.1g gross, 5.82g casting tube, 188.3g net propellant
+* Grain 3, 196.6g gross, 5.78g casting tube, 190.8g net propellant
+* Grain 4, 201.1g gross, 5.80g casting tube, 195.3g net propellant
 

diff --git a/rockets/research/2018-batch-04.mdwn b/rockets/research/2018-batch-04.mdwn
index 3926a7ba28f2644b5bebd8c754cc3d0aed28ae12..69adc540f58490e26beef28c42275728050d4af1 100755 (executable)
--- a/rockets/research/2018-batch-04.mdwn
+++ b/rockets/research/2018-batch-04.mdwn
@@ -21,8 +21,8 @@ These grains were cast on 2018-12-17.
 
 ## Results ##
 
-* Grain 1, g gross, 5.78g casting tube, g net propellant
-* Grain 2, g gross, 5.87g casting tube, g net propellant
-* Grain 3, g gross, 5.83g casting tube, g net propellant
-* Grain 4, g gross, 5.79g casting tube, g net propellant
+* Grain 1, 193.4g gross, 5.78g casting tube, 187.6g net propellant
+* Grain 2, 192.5g gross, 5.87g casting tube, 186.6g net propellant
+* Grain 3, 190.8g gross, 5.83g casting tube, 185.0g net propellant
+* Grain 4, 195.1g gross, 5.79g casting tube, 189.3g net propellant
 

diff --git a/rockets/research/2018-test-1.mdwn b/rockets/research/2018-test-1.mdwn
new file mode 100755 (executable)
index 0000000..2636426
--- /dev/null
+++ b/rockets/research/2018-test-1.mdwn
@@ -0,0 +1,27 @@
+# Test 2018-1 #
+
+7 grain 75mm sorbitol motor with pyrodex pellet ignition in 4-inch Wildman
+rebuilt airframe flown on 2 September 2018 at Airfest in Argonia, KS.
+
+CTI Pro75 6xl case, Loki #50 (long) nozzle with 2 o-rings, CTI forward and aft 
+closure rings, forward bulkhead from Terry's pile machined to have 0.5" inside 
+snap ring plus 0.25" inside liner, with two o-rings, one pushing against liner.  
+Original simulation says this should be a a 34% M-2293 with 6520 Ns total 
+impulse, 1056 psi max, 76% volume loading, and about 2.25 seconds burn 
+time.  After casting and weighing the grains, the adjusted simulation says
+this will be a ...
+
+## Results ##
+
+Flown at Airfest in Argonia, KS, off Terry's launch trailer.  Motor cato'd
+about 0.45 seconds after launch, blowing forward closure through the ebay
+and ripping the forward end of the case apart violently.  Clearly a 
+significant over-pressure event.  Pretty sure this was the first time I
+actually few the Pro75 6xl case with KNSB, and I dialed up the max pressure
+at the same time... which was clearly a bad plan.
+
+The burning grains were sent up in a fireworks-display-worthy fashion,
+generally acknowledged as the most impressive-looking CATO of the weekend.
+
+Flight data logged as sn 3121, flight 5, stored in cato.eeprom.
+

diff --git a/rockets/research/2019.01.07.mdwn b/rockets/research/2019.01.07.mdwn
new file mode 100755 (executable)
index 0000000..7f31883
--- /dev/null
+++ b/rockets/research/2019.01.07.mdwn
@@ -0,0 +1,22 @@
+# Batch 2019.01.07 #
+
+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 first time mixing APCP propellant.  Used the 4.5qt mixer and
+hand packed with no vacuum processing.  The formula was taken from a pdf
+about everclear, modified by me to use PAPI as the curative.
+
+These grains were cast on 2019-01-07.
+
+## Results ##
+
+The batch size was too small, there was about 1/4" of the second casting
+tube left empty.
+
+* 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
+
+

diff --git a/rockets/research/2019.01.08.mdwn b/rockets/research/2019.01.08.mdwn
new file mode 100755 (executable)
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
+

diff --git a/rockets/research/index.mdwn b/rockets/research/index.mdwn
index e50a65cd545bee72504325a00f26100a849fab0c..49d8d1db6651e302663bb8cdae2a5400e2312575 100755 (executable)
--- a/rockets/research/index.mdwn
+++ b/rockets/research/index.mdwn
@@ -9,9 +9,15 @@
 
 ## Activity Log ##
 
+### 2019 ###
+
+* [2019 batch 01](2019.01.07.html) - 7 January 2018 - 4 54mm Everclear APCP grains
+* [2019 batch 02](2019.01.08.html) - 8 January 2018 - 4 54mm Everclear APCP grains
+
 ### 2018 ###
 
 * [2018 batch 01](2018-batch-01.html) - 5 July 2018 - 7 75mm KNSB grains
+* [2018 test 01](2018-test-1.html) - 2 September 2018 - 7-grain 75mm KNSB cato
 * [2018 batch 02](2018-batch-02.html) - 15 December 2018 - 4 54mm KNSB grains
 * [2018 batch 03](2018-batch-03.html) - 17 December 2018 - 4 54mm KNSB grains
 * [2018 batch 04](2018-batch-04.html) - 17 December 2018 - 4 54mm KNSB grains