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Old 9th Apr 2012, 01:33
  #70 (permalink)  
jeffg
 
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On the other hand, I have not seen nor read any evidence that justifies applying the V-22 flight limitation to other flying machines.
Actually it's the other way around. The 40/800 rule was in several NATOPS manuals well before the V-22 came along and it was automatically put into the V-22 NATOPS, before Marana. As recent flight test data shows, the V-22 is less susceptible to VRS than are most single rotor systems therefore those limits shouldn't be applied to it. Why are they? Because those limits are perfectly acceptable for both commercial and combat operations so it doesn't really matter. Fact is that if both types are flown within their limits theyre pretty darn safe from VRS.
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