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HelicopterMain Discussion › Feathering shaft helis
04-10-2011 06:10 PM  6 years agoPost 1
helibeli

rrApprentice

wales.uk

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What is the explanation that when the tip path plane of feathering shaft helis is tilted cyclically there is no vibration,yet all see-saw design helis have to have the rotor disk underslung from the pivot otherwise you get severe vibrations.Why did model heli designers not go the feathering shaft way right from the beginning?it took a few years before the Heim head appeared.

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