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Old 17th Jul 2007, 21:00
  #107 (permalink)  
NickLappos
 
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The downwash discussion is really not about absolute weight alone, it is more the disk loading that drives downwash velocity (weight drives the volume of air that rides at the downwash speed).

The S61/H3 has a lot less downwash speed, its disk loading is about 35% less than an EH101 or an S92, and the downwash velocity goes with the square root of the disk loading, so the 101 is perhaps 15% higher velocity than the S61. The S92 and EH101 are within 10% of each other, the 101 a bit more.

The 92's downwash is clearly more than an H3's, but not so much greater that it needs a great deal more thought. I would believe the 101 to be that way, too. More downwash that an S61, but not disqualifying.

OK, write down the date, I said something good about the 101....
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