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This thread reminds me of another phenomena applicable to helicopter flight theory - what we liked to call the Lu Zuckerman effect.
Remember the fun?
This effect more than adequately explains gyroscopic precession, centrifugal forces, acceleration vectors, pizo-electric effects, B214 vibrations, and a lot about the R22, etc, etc etc.
PS: it appears AC that landing gently means no gyroscopic forces, but presumably there is a rate of landing at which it would be impossible due to gyroscopic forces wouldn't it?
..... Lu Zuckerman effect again I think!
Question for the day...how do we get dynamic roll over?