3 This was a 4-grain 54mm Everclear motor using a #32 nozzle. Ignition was
4 with one 45-cal pyrodex pellet on an e-match, on Sunday at the Tripoli
5 Colorado Spring Fling event near Hartsel.
7 The grains used were from the 21 May 2019 batch:
14 Small profile o-rings were used between grains, leaving the grains still
15 slightly "loose" in the case. The buna-n o-rings on the nozzle and forward
16 closure were lightly greased, and the liner exterior was heavily greased.
20 Test stand data in 2019-05-25-serial-3634-flight-0030-5.eeprom.
22 No liner burn-through, no discernable throat erosion, nozzle end o-rings
23 were fairly cooked but no evidence of blow-by.