BendyFlyer
Charter Member
A little off topic but relevant nonetheless and it is too true Nagpaw. There is a lot of cut n paste rubbish on the net. My example is the Shorts Sunderland - every so called technical reference obviously used the same reference material and just reproduced it but it was all wrong to begin with, finally came across the Air Ministry official handbook and repair manual which gave the precise measurements, control angles etc., none matched the internet available reference material. A couple of inches on the span and incorrect airfoil designator and then chord makes all the world of difference on the lift characteristics of a wing as does the primary flight control surfaces, size and angle of movement. (I fixed this all up and redid the air file for the JBK Hythe which I then converted into a Sunderland - available here at SOH as a download). Another key issues is take off weights etc, basically all WW2 heavies went out routinely grossly overweight with either fuel or ordinance loads. Or the DH Mosquito, stalled at @ 90 knots but had a VMC of 180 knots if you lost an engine on take off big difference.