PPRuNe Forums - View Single Post - Helicopter Dynamics: Gyroscopic Precession
Old 4th Aug 2001, 04:15
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tgrendl
 
Join Date: Jul 2001
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I think if you take the modified bicycle wheel and do one more modification I may start to catch on.

Of the four metal spokes replace three of them with plastic. (same qualities, flex etc.)

Now, if you input a force to the hub from underneath you would have gyroscopic precession.(while spinning)

In the second case with the spinning "wheel" if you hold a big magnet over a quadrant you would have an approximation of aerodynamic precession.

Am I getting there?

So in the first case we have control forces being transmitted (from "in" to "out"), physically altered by precession, hampered (altered) by hinge offset, resistance etc.

In the second case the control forces are happening already "out" and transmit the pull back to the airframe. (and through the reverse path)

btw, great threads, always enjoy making my brain smoke.

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