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Thread: Vortex ring
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Old 20th Oct 2017, 15:46
  #30 (permalink)  
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You actually said the UH60 could be in the VRS envelope at 80 kts (light turbulence) and in heavy turbulence at 26 kts and 1700'/min and then, once corrected you produced a list of numbers
Main Rotor Radius 26.9
Disk Area 2273.28786006411
Weight 22000
Disk Loading 9.67761293520459
Air Desnity 0.002377

Vi 2707.10926827765
Vi min .66 1786.69211706325
Vi max 3383.88658534706
Vi Peak 14.6835315340503
Vi 1 26.6973300619097
Vi 2 53.3946601238194
Vi 3 80.0919901857291
with no units or explanation and then started talking about envelopes when you actually mean a larger area on the graph.
You repeated that a smaller envelope is 'easier to avoid' as if that makes it less likely to get into VRS with a low disc loading helicopter which I now have to repeat is not the case.

Ever taught IVRS, VRS and recovery? Ever had either?
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