Rotation |
A quick recap on rotation.
Without rotation our system (the Frisbee) would simple pitch and plummet
without an added angular velocity. This angular velocity turns the
unstable pitching action into a stabilizing precession rate.
The rotation of the system does not any component to the lift force, but it does add various other factors to the Frisbee's flight besides the precession rate. One of these is Angular Momentum. |
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A properly constructed disc has the majority of its mass around the circumference of the rim. We can generalize the Frisbee then to have the general likeness of a ring rotating about its center with radius (r). |
Using this, we can calculate the Moment of Inertia of the disc. (5) |
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