cheers old smokey
Thats what I was looking for on the proflie drag side. I fully understood the CL induced drag relationship, but was getting a bit confused with the profile drag side of the graph. It would probally be better for to use 2 graphs for different weights, therefore different speeds.
BOAC, so sorry for not coming back sooner, i've been having a nightmare with local, slow and restricted internet ( I'm still on a contract in the sticks!!! ), so i can't access those pages yet. But i'll be able to in 2 weeks, can't wait!!
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