3 This was a 3-grain 54mm Everclear motor using a #24 nozzle. Ignition was
4 with one of Terry's igniters, on Saturday at the Tripoli Colorado Spring
5 Fling event near Hartsel.
7 The grains used were from the 21 May 2019 batch:
13 Small profile o-rings were used between grains, leaving the grains still
14 slightly "loose" in the case. The buna-n o-rings on the nozzle and forward
15 closure were lightly greased, and the liner exterior was heavily greased.
19 Test stand data in 2019-05-25-serial-3634-flight-0030-4.eeprom.
21 There was a fairly significant liner burn-through in the middle of the first
22 grain near the nozzle, burned-looking area was dime-sized, with maybe 1/4"
23 "hole" in the middle. Some extra ash on case there, but no obvious signs of
24 weakening of the case. Not sure what that was caused by?