Pomilio, Ottorino · New York, McGraw-Hill · leaf 157
a tendency to react everytime the line of path tends to change its orientation rela-tively to the machine. It is necessary, however, that this 142 AIRPLANE DESIGN AND CONSTRUCTION tendency be not excessive, in order not to decrease themaneuverability which becomes an essential qualityin rough air,… … Fig. 101. Thus far we have considered the flight with the enginerunning. Let us now suppose that the engine is shut off.Then the propeller thrust becomes equal to zero. Let us Zone within nhich the Center pf Drift must/ in Order that the Machine be Trans versaIItjand Directionallu Siable
Airplanes
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