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Old 03-28-2010, 08:55 AM
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stantonjtroy stantonjtroy is offline
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Join Date: Dec 2006
Location: Maryland
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Maybe everyone else is seeing something I'm not but based on the sim data shown, you don't need to change the rocket at all. 18-25 fps decent rate under chute is normal so having these speeds at deployment is ok. 29fps is a little fast ( I wouldn't call it uberfast). Follow Mark's advice; Change up to a B6-6. That should put you dead on the money. Remember the "up" or "down" arrow shown for deployment in Rocsim is realative. On any balistic curve (parabolic) there is only one infintesimaly small data point where vertical velocity is truely zero. A fraction of a second prior or after and your rocket is, in the strictest sence, still moving up or down and Rocsim will show this. The velocities you're getting aren't too bad at all (except the 29fps). For a good visual repersentation, have rocsim plot the data (set it to use Apogee and Deployment as reference lines). The closer those lines are, the softer the deployment. I think you'll find them quite close. My two cents.
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