Issus
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- Aug 27, 2012
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So i've been planning to build a little rocket that will be pretty cheap to launch and not go too high. Originally, I was going to do this properly with milled VK airfoils on the fins and tip-tip carbon, however some plans for that launch were canned. Now the idea is something I can pretty much build in a weekend from scratch without costing very much money yet still be strong enough to take some medium sized motors and to be durable enough to not need to worry about it too much. Basically, just a rocket I can have fun with. I went with a 54mm blue tube and plastic nose cone so I don't have to spend a week doing layups, sanding and epoxy to make the body tube/NC and am using a 38mm motor mount to take CTI or Aerotech motors to keep my options open for reloads.
It will take up to a J, however stability is getting down to 1.30, and breaking mach with 6mm square fins, and this fin design isn't likely to work too well. A I366 will be my biggest load for this, which is going to get up to 0.98M anyway, so I probably wont bother with it.
AV Bay is detailed here:
https://www.rocketryforum.com/showthread.php?42018-Rethinking-my-AV-Bay-designs
Tower Launcher is here:
https://www.rocketryforum.com/showthread.php?41954-High-power-launch-tower-design-review
This is how the rocket looks with subsonic fins:
These fins will be identical in shape, but without the airfoil milled I can mill 3 square fins in under 2 minutes for all of, vs 20 mins of setup/CAM and then 14mins per side (about 32mins per fin including setup).
It will take up to a J, however stability is getting down to 1.30, and breaking mach with 6mm square fins, and this fin design isn't likely to work too well. A I366 will be my biggest load for this, which is going to get up to 0.98M anyway, so I probably wont bother with it.
AV Bay is detailed here:
https://www.rocketryforum.com/showthread.php?42018-Rethinking-my-AV-Bay-designs
Tower Launcher is here:
https://www.rocketryforum.com/showthread.php?41954-High-power-launch-tower-design-review
This is how the rocket looks with subsonic fins:
These fins will be identical in shape, but without the airfoil milled I can mill 3 square fins in under 2 minutes for all of, vs 20 mins of setup/CAM and then 14mins per side (about 32mins per fin including setup).