Page:Aerial Flight - Volume 1 - Aerodynamics - Frederick Lanchester - 1906.djvu/229

Rh lamina the curve will pass gradually from the form given by (B) to that given by (A), (E) and (F) being intermediate stages, and we may expect that the whole intermediate series will be in most part included within the area between the curves A and B, and in their character the intermediate curves will form a homogeneous series; thus a few accurate plottings from planes of known proportions would enable the curve to be drawn for any intermediate plane with a reasonable degree of certainty.

The curves as plotted in Fig. 95 are to some extent misleading, each curve being plotted in terms of the common maximum ordinate. In Fig. 96 the necessary correction is made to reduce the curves to a common scale, the maximum values being assigned proper to each particular proportion of plane in accordance with Fig. 89 (Chap. V.).

In Fig. 96 abscissae represent angles of inclination as before, and ordinates give the values of the constant $$C$$ generalised so A.F.