Pomilio, Ottorino · New York, McGraw-Hill · leaf 49
Fig. 33. is, if D„ is applied very far above the center of gravity)the maneuver will be slow. Therefore for good mobilityof the airplane, the force Z)„ must not be too far abovethe center of gravity. The foregoing considerations show the close interdepend-ency existing between the problems of… … Fig. 34. to control directional stability by means of the lateral con-trols, and vice versa. For example, birds possess no meansof control for directional stability alone, but use the motionof their wings for changing the direction of their flight. To raise the force Z)„ with respect to the center…
Airplanes
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