||12" plastic parasheet
3x Estes A8-5
||I had intended to fly this model on B6-6 motors, but when I got to
the launch I realized I'd burned most of the ones I'd bought getting the
Streamer Duration task completed for NARTrek a few weeks ago, and didn't
have three left. Since this field is on the small side, and the wind
was higher than I liked for a high flight, I loaded up a set of A8-5 instead.
Ignition was 3 for 3 again, as usual, and the boost was straight and roll
free. Recovery was fairly close.
Alpha + booster
Nose blow tumble
||This was in the way of sheer fun -- an Alpha on a C6-7 is a high and
fast flight; boosting it was an A10 is almost ridiculous, but boost it
I did, and though it turned a few degrees on staging (I think this is because
of assymetrical venting; one of the booster vents is right over the motor
latch), everything else was normal. Unfortunately, the tip was upwind,
and without a parachute or streamer, the rocket didn't drift quite far
enough back and landed on pavement just inside the Boeing plant, to be
recovered by Bruce Johnson, who's an employee of Boeing. The pavement
impact resulting in cracking one fin fillet, but that can be easily repaired
by wicking some CA into the crack. It'll fly again.
18" crepe paper streamer
||There was some talk about altitude and small motors -- so I figured
it was time to remind the gathered group how high you could go on an ordinary
Estes 1/2A motor. The Ninja coasts like nobody's business with the
boattail on it, so I sent it up. As always, it coasted out every
bit of the 4 second delay and ejected just at apogee.
12" plastic parasheet
||As always, I wished for a D12-7, but with only D12-5 available, I made
do with what I had. I didn't see this, but I was told that the rocket
was starting to arc over at apogee when it ejected -- still rising, but
definitely turning. That's about what I'd expect, given that two
seconds short of turnover is only about 50 feet below apogee, and the angle
should be visible by then. In any case, recovery, while a way downwind,
was nominal, and there was no damage.
12" plastic parasheet w/ spill and vents
||Not wanting to repeat the stripped parachute from last week, I loaded
up the C6-5 and sent the Cherokee on another journey. Boost was straight,
coast was smooth, and ejection was right on top, with recovery a hundred
feet downwind. With that, I called it a day.