PPRuNe Forums - View Single Post - Dynamics ~ 2 Blade Rotor w/ Offset Flapping Hinges
Old 11th December 2002 | 00:46
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Dave Jackson
 
Joined: Nov 2000
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From: Vancouver, BC, Canada
vorticey,

I don't fully understand your concerns.

If the mean coning angle is greater, then the blades' center of mass (etc.) will be higher. This means that the pre-cone angle should be greater and the teetering hinge should be higher.

In a very general sense, the teetering rotor is no different from the articulated rotor. Both have tip path planes and mast planes. These planes are not parallel to each other during most flight conditions.
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As an aside; on sketch D/, if the ctr-ctr distance on the Tie-bar was slightly longer than two-times the offset length, the pre-cone angle will automatically increase when the rotor teeters. This *might* be an advantage when maneuvering.
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