ding edge to chord Upper wing 2.5/4.96 =0,51 Lower wing 1.04/4.96 - 0.21 Load per unit area W/S = 6.5 lbs./sq. ft. For the calculation of the mean center of gravity position it is not sufficient to take into 203 account the fact that the upper wing area is jgQ = 1-35 greater than the lower wing;… … 20 per cent.8 In our case we may assume, therefore, 20 X 30/50 «12 per cent. Whence we obtain the mean center of gravity position 0.21+ (0.51X1.35X1.12) n ,0 1 +(1.35X1.12) u'*y But this is not all. The ratio of the lift of the upper wing to that of the lower wing is constant only for great angles…
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