3 This was my second flight with "Everclear".
5 5 grain 54mm Everclear motor with #36 nozzle, using one 45-cal pyrodex
6 pellet on an e-match for ignition. Flown at Tripolo Colorado Spring Fling
7 2019 on Sunday morning.
9 The grains used were from the 21 May 2019 batch:
17 Used abou 16.75" of ARR liner. Small profile o-rings were used between grains,
18 leaving the grains still slightly "loose" in the case. The buna-n o-rings on
19 the nozzle and forward closure were lightly greased, and the liner exterior
26 Tiny bit of liner burn-through at the junction between grains 6 and 3 (one
27 grain forward of the nozzle). The buna-n o-rings were pretty cooked on the
28 nozzle end, but no evidence of blow-by.
30 Forgot to get pre-flight masses. The post-flight mass of the airframe and
31 motor was 4140g. That's complete except for maybe 3-5g in the ejection
32 charges, and of course the propellant consumed.
34 Flight data in 2019-05-26-serial-1257-flight-0018.eeprom shows 9170 ft GPS