DM,
"BTW the Aerodynamic theory of the blade is pretty well known and can be found across the web if you search."
That's why I ask here. Cannot find a consise answer. However if Nick claims a 2000 lb lift difference, he would (should?) be able to proof it.
As mentioned, I doubt that the UK-folks are any less ingenious than US.
2000 lbs is not a believe, but a rather solid number.
I would like to know how it was arrived at, and how the BERP folks look at this....
No bias, ..... by the time Inc. II is there, it is a new machine with an old name...
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