Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 98
nd at the rear end is the tail—one small plane sur-face—and the vertical rudder surface in two parts,one above and the other below the tail plane. Equi-librium is controlled by changing the slant of twosmall balancing planes which are placed midway be-tween the main planes at the outer ends, and in… … 98 FLYING MACHINES: THE BIPLANE. moved to right or to left by the swaying of the pilotsbody. The motor is raised to a position where the shaftof the propeller is midway between the levels of themain planes, and within the line of the rear edges,so that they have to be cut away to allow the…
Aeronautics
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