Pomilio, Ottorino · New York, McGraw-Hill · leaf 127
y to take up also the spiral glide which is today thenormal maneuver for the descent. The spiral descent is accomplished by keeping themachine turning during the glide. We have seen that acentrifugal force is then originated W V equal and opposite to the centripetal force R\ which hasprovoked the… … FiQ. 86. THE GLIDE 113 force is provoked solely by the inclination of the airplane,that is, when the angle of drift is zero, we say the spiraldescent is correct, the machine then doesnt turn flat;as in practice this is the normal case, we shall study onlythis case. We developed the discussion for…
Airplanes
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