I am trying to build a rocket that will be conical based on a plastic piggy bank.

I went to the Apogee site and in their newsletter 162 found a method on simulating a pyramid style rocket by creating a massless transition at the rear. I tried this and it states the rocket is over-stable, but when I simulated a launch it flips around and crashes. Can someone let me know what I am doing wrong?

I attached the RockSim file. It is not 100% complete (like I have some centering rings missing), but it should have been good enough for the simulation.

Thanks
Les

Attached Files

Number 2.rkt (15.8 KB, 71 views)