We were chatting about Marty's rocket and at this point, I've got to
punt. If it were a model rocket, I'd bet a pack of D12 motors that it
would weathercock but all the HPR two stagers I've seen, on video, went
up nicely (although I'm curious about the K550 booster). Can somebody
else take a look at this?
I'll sit back and listen 8^)
> Thanks for the info guys. I've seen a few tidbits here and there that
led me to believe what you guys have said about weather***ing. I'm
curious about the high moments of inertia concept and why RockSim
doesn't include this.
Go to Dejanews.com and do a Power Search -> rec.models.rockets ->author
= "Peter Olivola" -> search for (inertia ) This should get you
> I've posted a couple of screen captures from RockSim for one of the
rockets on my website at the following url
As you can see, this particular configuration is dual staged, is about
280 oz., and 114" long.
> The rocket is a custom made from 4" PML tubing that has been glassed
with first 4oz and then 2oz cloth, with g10 fins, and an ogive
fiberglass Scotglass nosecone. The pics on the web site show the
sustainer loaded with a J350, the booster with a K550. With the booster,
the rocket has a static margin of 3.53. The sustainer alone has a
static margin of 3.19.
> This bird utilizes the motor/fin can from my extended Nike Smoke (see
detailed info at http://www.FoundCollection.com/) for the
sustainer. I've got numerous 4" components between these two rockets
that I can swap around for different motor configs. That's another
problem I've got - how to save assemblies in RockSim so that I can pull
them up in any 4" rocket config without having to rebuild them everytime
Marty... Were you the one that Kent needed the dremel for at Bomber
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