Flight Log for 16 May, 1998, AMA Field, Muncie, IN
National Sport Launch '98, Day Two


Clear, wind N 5-15, changing to N 2-5 appr. 5:00 pm.
Model Flt 
#
Recovery Type Motor Comments
Spike (2)
5
18" nylon parasheet RMS 24/40 E18-4W This flight went off as well as E18 flights in the Spike always seem to; recovery was very close to the launch point, and still, after five flights, there's no sign of scorching or heat damage to either the parachute or shock cord, despite use of absolutely no wadding of any kind.  I'm sold on the "parachute compartment" recovery protection system.
Fat Fat Boy (2)
1
18" nylon parasheet Estes D12-5 Perfect maiden flight, good stability and recovery.
Maniac w/ Long Shot Booster
12
18" nylon X-form parachute Estes D12-0/D12-7 Boost and staging went off without a hitch, but the shock cord parted at the mounting point on ejection and the airframe core sampled, falling stably from approximately 1200 feet.  The airframe tube forward of the fins is a complete loss, crimped, opened at seams, and folded in at the mouth.  Fins and motor mount are undamaged, however, and the booster was recovered without a scratch.  The nose cone drifted away on the parachute, but was later returned to Lost & Found.  All that's required for repair is two pieces of BT-56, two couplers, and some primer and paint.  Should be ready to fly again in a month or so.
Fat Fat Boy (2)
2
18" nylon parasheet Estes D12-7 core, 3xEstes C6-7 outboards airstarted with Jet-X wick The airstarts failed to ignite on this flight, most likely because I cut the Jet-X wick too short and the flame wasn't conveyed to the propellant in the outboard motors.  Fortunately, I'd followed the cardinal rule of airstarting clusters, and used a core motor capable of flying the model safely on its own, and the rocket boosted and ejected above ground, suffering only a broken fin tip and one other fin cracked on landing (due to the weight of the unfired outboards).  A little CA, and it was right as rain.
Fat Fat Boy (2)
3
18" nylon parasheet Estes D12-7 core, 3xEstes C6-7 outboards airstarted with Jet-X wick Determined to show that this technique worked, I immediately prepped up the Fat Fat Boy again, using the same outboard motors still in the mounts and longer pieces of Jet-X.  This time, two of the three outboards ignited and the rocket demonstrated a good boost, airstart ignition (with no visible course change from the unbalanced thrust -- this is why we airstart), but the delay on the core motor, as on past occasions, proved short.  In this case, the result (in combination with a high horizontal velocity due to wind and rod angle) was a shock cord failure at the mounting point.  Fortunately, the aiframe of this model is unstable without the nose cone and nose weight, and tumbled to earth without damage, while the nose cone didn't travel far from the relatively low altitude.
Spike (2)
6
18" nylon parasheet Dark Star F62-6 Flight and deployment were textbook perfect.  This flight was after the wind had dropped off near the end of the day, but still drifted a couple hundred yards to the secondary parking lot, where it landed on gravel and collected a few minor chips in the paint.  No other damage.


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