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Old October 7th 07, 11:31 PM posted to rec.aviation.piloting
Morgans[_2_]
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Default Cessna Anticipates AvGas Demise


"Matt Whiting" t wrote


I didn't see any details on their web site, but if they use a hydraulic
coupling then that should isolate the prop during a strike assuming proper
design of the hydraulic drive. There is likely though some loss of
efficiency as I don't know of any hydraulic drives that are 100%
efficient.


I read that a clutch protects the engine from prop strikes, and a harmonic
dampener isolates torsional harmonics. I take that to mean an isolation
rubber dampener, as is common in industrial motors and transmissions.
--
Jim in NC