10-11-2007, 09:15 PM
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BARCLONE Rocketry
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
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New Plan -- Backyarder
Since we haven't closed this thread yet, I'll add a new design here tonight...
I have this not-so-big backyard, about 200' x 175', and I thought about what size rocket I could safely fly here. I figured it needed to be streamer recovery to reduce drift, and needed to be capable of flying on about a 1/2A with a decent Dv. The thought occurred to me that most designs would use a small-diameter body tube, to maximize the altitude, and that would be detrimental to my purpose. So, I went the other way...
This design uses Series 13 components, and can still reach over 265' with a Dv of 3 on an A10-3. The performance on a 1/2A3-2 is just right, at 101' with a 7+ Dv. Both motors get off the pad with (guide rod) inches to spare.
Length: 16.60"
Diameter: 1.34" (ST-13)
Fin Span: 4.7"
Weight: 1.1 oz
1/2 A3-2T......101.5'......Dv 7 FPS......24"
A10-3T.........265'........Dv 3 FPS......20"
Enjoy!
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