Sound a lot like a visit to tvtropesCS wrote:Thanks for the links. Talk about a exponentially growing rabbit hole of mind f*ck. I'm running out of room for tabs.
You would get an extremely stable projectileThe big question I haven't figured out, what negative happens if the cg and cp are to far apart?
Also a badminton like structure on the back of a projectile would move its cp back?
Yes. An easy way of finding the centre of pressure is to make a cardboard cutout of the profile of the object in question, and see where it balances.
There are other ways of course: http://www.grc.nasa.gov/WWW/k-12/Virtua ... rktcp.html
Ideally I would want a greater separation of CP and CG but the fact that the fins need to survive firing means that I couldn't make them too light.Sure, I may have said it in my own layman terms though. However how much flight time are willing to sacrifice for your projectile to spend yawing, before correcting itself? The amount of drag and lift will effect how fast the projectile corrects itself. Firstly amplified by the distance between the cd and cp.
Practically, gluing a shotgun wad in reverse might do the trick.
I solved this to some extent with the split sabot design that pulled the projectile along by the threads on the body as opposed to pushing on the fins.