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Old 22nd May 2007, 10:13
  #29 (permalink)  
NickLappos
 
Join Date: Apr 2003
Location: USA
Age: 75
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heli1, you are at least 1 order of magnitude off in your horsepower numbers, unfortunately!

Although it is hard to believe, the EH-101 has LESS useful load than an S-92, as proven by their respective flight manuals. The horsepower difference is fully absorbed by the empty weight difference between the two, so they have precisely the same power to weight ratio, and the rotor system of the 101 is less efficient, so the net performance is actually lower. Calculating performance requires more skill than counting engines.

Here is a comparison I did 3 years ago, still valid:

http://webpages.charter.net/nlappos/comparison.htm
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