United States. Army. Signal Corps · Washington · leaf 153
AIR, SERVICE HANDBOOK. 151 The top camber: If this was flat it would produce a rarefied area of irregular shape. The bad effect of this upon the lift-drift ratio has already been explained. The top surface is then curved to produce a rarefied area the shape of which shall be as stream-line and free… … The camber varies with the angle of incidence, the velocity, and the thickness of the surface. Generally speaking, the greater the velocity the less the camber and angle of incidence. With infinite velocity the surface will be set at no angle of incidence (the neutral lift line coincident with the…
Aeronautics, Military
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