Danny, thanks for your response, I suspect that a lot of the stuff they gave us at Halton was superfluous to requirements. A pilot once stopped me halfway through expounding the lift equation etc etc and said this - I want an engine that makes it go faster, the faster it goes the more Bernoulis I get under the wings. More Bernoulis I go up, less Bernoulis I go down. Lecture end of. Generally speaking I like the Bernoulis theory (sorry for the spelling).
Smudge
PS, he was a Lightning pilot.
