03-15-2011, 12:26 AM
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BARCLONE Rocketry
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
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Quote:
Originally Posted by JP
I later had a chance to meet Tim and had a chance to ask him... about the Tube Fin/ Ring Tail drag calculation problem! Tim knows it is a problem and I am assuming it is on his list of thing to be improved at a later date.
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Good to hear from you, JP!
Having that acknowledgement from TVM about something we've suspected is reassuring, really. We weren't just imagining it...
Quote:
Tim is also suggesting the Velocity at Deployment is best under 50 mph which seems to be a much higher than the 20 mph that most rocketeers use as a standard.
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My standard for LPR, using thin plastic canopies and tape disk attachment points, is the slower the better. If you can hear the canopy "pop", the Dv is too high. Period.
Quote:
A little about decal simulations was given. Decals work best if the decal is made more like a complete BT wrap in size and completely covering the BT desired with decal and background colors. Also change the BT’s color in Rocksim to a white and diffused for the decal wrap for best results.
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Meaning we're stuck with calculating the exact diameter of the BT and making a flat 'decal sheet' with everything in place before applying it. Pi, anyone?
(Pi R round, Cornbread R square!)
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