Forums › Archives › Archives 2006-2010 › 2009 Project – Cradle Boosted Rocket—>launched
- This topic has 23 replies, 10 voices, and was last updated 16 years, 10 months ago by
new2hpr.
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December 30, 2008 at 1:50 am #49663
Jeffrey Joe HintonModeratorClip whips or flash in the pan for the first stage ignition? Either way, kool project.
December 30, 2008 at 2:17 am #49664SCOTT EVANS
Just a little more complicated than my 5 stager starting with a 4 “D” cluster. 😉 Ok a lot more complicated! In mine, if the center “D” didnt light, it would have been a much shorter ride. And no deployment. 🙄 But it all worked ok. 🙂
December 30, 2008 at 2:25 am #49665SCOTT EVANS
Also you might need little beefier moters than “B”s in the bottom. ❓
I think it looks like you have room for “D”s 🙂
December 30, 2008 at 4:17 am #49666slipstick
Also you might need little beefier moters than “B”s in the bottom. ❓
I think it looks like you have room for “D”s 🙂I’m just throwing out concepts, and I don’t want (or want any of the helpful NCR members) to have to chase the stages very far. C’s are probably a better choice for boost, but D’s won’t work (composites excluded) since I built it with 18mm tubes.
December 30, 2008 at 4:26 am #49667
AdrianParticipantLooks like a beautiful machine, and it should be a blast. Any way to check the stability on it? There’s lots of fins, but lots of motor weight back there, too.
December 30, 2008 at 7:13 am #49668
AdrianParticipantOf course, you could ignite your second stage motors with Parrots in those 18mm tubes, and get apogee deployment and some cool data as a bonus. Might be tough to pull together before this weekend, though. I’ll lend you one if you’re interested. It looks like with the length of the 2nd stage tubes that it might also be a tight squeeze to put one Parrot in each along with the motor and chutes. It might be better to just put one in the central part of the 2nd stage cradle to ignite both motors. The Parrot you got at the December launch would be perfect for that, especially if you haven’t soldered on the screw terminals yet.
December 30, 2008 at 3:09 pm #49669SCOTT EVANS
Also you might need little beefier moters than “B”s in the bottom. ❓
I think it looks like you have room for “D”s 🙂I’m just throwing out concepts, and I don’t want (or want any of the helpful NCR members) to have to chase the stages very far. C’s are probably a better choice for boost, but D’s won’t work (composites excluded) since I built it with 18mm tubes.
Oh.
They look bigger in the picture.
Adrian, is right. The weight of all those little motors adds up back there.December 31, 2008 at 3:31 am #49670new2hpr
ParticipantMaybe Mike’s a beta tester for Rocksim 9. It would allow all those additional pods with nosecones and motors.
Ken
December 31, 2008 at 6:22 am #49671slipstick
…Any way to check the stability on it?
Yes, I verified it with Rocksim 8 and later 9 (as a Beta tester). The HP version has long K700’s which move the weight forward. The model rocket version is marginal as an extra motor is used for igniting the upper stage(s).
It turns out we have to be at wedding before 2 PM on Saturday the 3rd, here in Louisville, so making it up to Ault and back for a launch might be dicey.
I’ll need to learn more about the parrot yet, but I have many plans for it.
December 31, 2008 at 7:02 pm #49672SCOTT EVANS
…Any way to check the stability on it?
It turns out we have to be at wedding before 2 PM on Saturday the 3rd, here in Louisville, so making it up to Ault and back for a launch might be dicey.
If its not yours, or one of your kids, you dont have to live with it long if your late! 😉
Besides most weddings all end the same, they say “I do” and then they kiss. Seen one you seen em all. 😉
And unfortunanetly all marrages dont end “Death do they part” . 😯
I had a friend, spent more money than anyone I know (biggest shin-dig I ever did see) on his wedding, and honeymoon. Marrage almost lasted a whole year. 🙂Yes, I know, I’m a bit cold! 🙂
If your late, you might miss good food though. 🙂 -
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