2023 Launch Reports
As of this writing (April), it doesn't look as if we're going to get a high-power launch in Elsberry this spring -- too much rain. However, I am planning to make it to at least some of the park launches throughout the year, and am planning to attend Midwest Power for the first time since I got my level 3 there in 2016. It would be nice if we got to fly at Elsberry in the fall, too.
SLRA Park Launch, April 8, 2023, Valley Park MO
Weather conditions: mostly cloudy, clearing throughout the morning; wind E @ 8-14 mph, 54 F, 72% RH
Estes Tazz, B6-4
I initially had a Q-Jet B6-4 in the Tazz, but could not get it to light after three attempts. I'm not sure whether it was a bad motor, corroded clips not getting enough juice to the Q-Jet igniters, or what. I replaced it with an Estes B6-4 and it flew on the second try.
Estes Mega Mosquito, D12-3
Another old reliable rocket - it's flown here many times.
I also brought my new Boosted Bertha along with a Semroc Hawk and my Semroc Orbital Transport, but with the wind picking up I decided not to fly any of those.
SLRA Park Launch, April 29, 2023, Valley Park MO
Weather conditions: fair and breezy; wind NNW shifting to W @ 10-15 mph, 69 F, 30% RH
We had an afternoon launch this time, so Dave K. could do a twilight 50th anniversary re-enactment of the Saturn V Skylab launch from his scale launch tower. Earlier in the day, some SLRA folks had been over at nearby Beaumont Scout Camp to launch 3D-printed rockets with scouts. The weather was excellent.
Estes Boosted Bertha, B6-0 to B6-4
First flight of the Boosted Bertha went pretty much perfectly. I didn't have an altimeter on the rocket, but I would guess it only went about 500 feet on two B's. A C6-0 to B6-6 would probably be a better flight for this field.
VideoService "youtu" not recognized.
Boyce Aerospace Hobbies Gemini-Titan II 1:46, cluster of two D20-4s
The second flight of my Gemini-Titan scale model did not go well, however. One motor lit and carried the rocket off the pad, then the second motor lit just as the rocket was starting to arc over. From the video, the second motor started thrust about 1.5 seconds after the first one. The rocket went more-or-less horizontally a few hundred feet south, then lawn darted. I think the first motor's ejection charge may have fired while the rocket was under thrust from the second motor, causing the rocket not to separate, and the second motor's ejection fired after the rocket was already down.
When I recovered the rocket, the two halves had separated; the shoulder had broken off of the capsule section and remained stuck in the forward tube, which was crumpled. Two of the 3D-printed parts from the interstage had come apart, but didn't appear to actually be broken. The rear tube was OK, but the 3D-printed structure around the motor tubes was broken. Two of the fins were broken off, and I only found one of them. I doubt this rocket will be worth rebuilding, although it is a good kit and I would recommend it.
If the second motor had not fired at all, I think the flight probably would have been okay. The late-firing motor must have just barely started smoldering when the rocket left the pad. This seems like a fairly unlikely failure.
Estes Mega Mosquito, C11-3
Yet another flight of the old Mega Mosquito. I had put a C11 in it to fly as a demo at the scout camp, but didn't fly it there. This rocket had only flown on Ds and Es before, but it did well on the C11.
