Re: FW: Model Rocket Plan

Ian Woollard wrote:
> 
> Henry Spencer wrote:
> 
> >If you're feeling minimal, it can be done with five, as on DC-X's
> >maneuvering flaps.  One deflector on each of four sides to do pitch and
> >yaw... and then *split* one of them, with the two halves movable
> >independently, for roll.
> >
> >
> No, isn't 3 half-paddles at 120 degrees to each other minimal?

That should work, with appropriate mixing 
of roll/yaw/pitch inputs to three actuators.

(Similarly, it should be possible to steer a three-finned
air vehicle with one control surface on each fin.)

-dave w