Originally Posted by
gulliBell
OK then, I'd like to know how the Vne limit came to be in R44.
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Many people know that the Vne in the R22 is due to forward cyclic position. At Vne (and most rear cg), the stick is forward enough that you are at the certification limits for controllability - the regs require you have enough push left to overcome a gust.
In the R44 I was somewhat convinced it might be retreating blade stall, but I talked with Pat Cox @ Robinson a couple years ago and he said no, that the Vne is just to control stress on the dynamic components and make sure components all reach their design lifetime.