Pomilio, Ottorino · New York, McGraw-Hill · leaf 289
of the moment of inertia.Then calling M the static moment of any control surfacewhatever about the center of gravity (that is, the product ofits surface by the distance of its center of thrust from thecenter of gravity) we shall have M = aX 72. Value a can be assumed constant for machines of… … Fig. 161.
Airplanes
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