At 07:10 PM 9/19/2002 -0700, you wrote: >At 09:01 PM 9/19/2002 -0500, John Carmack wrote: > >>With counter rotating blades you won't have any rolling torque, but you >>will still have a gyroscopic stabilizing effect that will make it resist >>changes in attitude. > > > Actually, no. The angular momentum of each pair of > counter-rotating engines cancels out, as long as they are spinning at the > same rate. There will be slight gyroscopic effects when the two engines > of a pair are at different throttle levels, but in the flight regime > contemplated for Gizmocopter, these throttling differences will be slight > and transient. > > -p
I'm not sure about that. If you have a shaft with two wheels on it, spinning either wheel either way will provide a gyroscopic "stiffness". Two spinning wheels, even going opposite directions, should have twice the stiffness, not none. I am far from an expert on gyroscopic effects, so I could be completely wrong, but I don't think additional rotating masses can't help you do a "plane change" of a rotating mass, so there is no way to cancel the gyroscopic stabilization effect. John Carmack _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
