Anyone have an intuitive guess (or experience) whether properly-packed eggs are likely to survive a 15 G launch? Seems kind of rough.
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Yeah, but I figure there's gotta be a limit on acceleration before problems crop up. Trying to guess whether an F67 would work here. Now that I think more about it, I wonder if we'd even be able to tell if the eggs broke on the way up or down?
Ah well that would seem to answer it....The force when the chute opens may easily be more than 15 gees.
Yeah, but I figure there's gotta be a limit on acceleration before problems crop up. Trying to guess whether an F67 would work here. Now that I think more about it, I wonder if we'd even be able to tell if the eggs broke on the way up or down?
Or, in the case of our TARC team from years ago, ejected at apogee into the top of a tree, exploding into a fine mist covering our NAR witness.
So, 30 days later . . . What's going on with the team, Neil ?
Dave F.
I don't mind giving an update here, mainly because I'm feeling ever so slightly optimistic at the moment. This has been a bit of a rollercoaster (and afadeev has been on the other end of a lot of my venting).I don't think Neil owes us, or anyone else, and update on this.
Sadly they have an unbreakable conflict the next two Saturdays. It really is a bummer, going up there to fly would be by far the best thing for them.The invitation is still open for them to come. Like I've said, even if they only come the see the other teams fly and how it all works. They will be able to come away with vital info for next year.
It might! I'll continue this in PMs.Would a Sunday work ???
I CAN make that happen!
We try our best to get any team flying for TARC
I don't think Neil owes us, or anyone else, and update on this.
There is a fine line between a Good Samaritan outreach, helping out someone else's kids, and flipping that into an suicide mission obligation with status updates to total strangers.
That's way too weird, and too far down the "no good dead shall go unpunished" trail.
I don't mind giving an update here, mainly because I'm feeling ever so slightly optimistic at the moment. This has been a bit of a rollercoaster (and afadeev has been on the other end of a lot of my venting).
Anyway, I spent some time with them and went through all the fixes I thought would be required to make the rocket safely flyable (including but not limited to: installing the altimeter + making holes, shortening and securing the payload section, adding a parachute to the lower half of the rocket, cleaning up the parachutes of the top half of the rocket, and cleaning up the upper rail button). All of them have now been implemented. Unfortunately it's basically one girl working at this point, being helped by her parents. Not much of a team.
I suggested that the team should do some experiments to figure out how much reefing the chutes need to ensure they'll come down in a reasonable amount of time. According to my sims dual-21" chutes will be way too slow. Don't know if they've done that yet.
The main thing is that the rocket seems to be flyable now, to my eyes anyway. They've acquired a couple of single-use F20s that should get them to 800+ ft or thereabouts. Their plan (I think) is to use those motors for practice, then buy a couple more for qualification attempt if the rocket survives. Finding a flying opportunity will be the challenge now; unfortunately they are not available on the next couple of Saturdays when RadRocks will be open for TARC flying. Their schoolyard is quite small (about 400' square) so I'm not too hopeful of them getting back the rocket if they fly it there unless it's a *really* calm day, and those tend to be in short supply in March.
But at minimum, they (she) learned a bit more about the various things that go into a working rocket, and some techniques. I am told she has come out of this more interested in it than before. I'm crossing my fingers that they can get some flights in now.
What makes you think they got "short changed " by the teacher?
Looking ahead to the finish line right now, not interested in rehashing what got us here.
The girl(s) will do a practice launch on Sunday, thanks to a way-above-and-beyond effort by jjsr.
Thanks again to you and the club and the farm for providing launch venue (and igniters!). I dunno if the girls will want to continue, but I think for sure they had a good successful experience today to motivate them.Neil, those girls are interested, even if next year at HS they don't have a rocketry team/club.
I reminded them all extracurricular activities start with someone having interest and finding others to join in.
I'm pretty sure the dad will be back. lol
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