Fijnje van Salverda, Johannes Gerardus Wybo, 1822-1900, Waring, George E. (George Edwin), 1833-1898 · New York, D. Appleton & co. · leaf 60
THE EXTRANEOUS OBSTACLE, OR THE WIND. 4.7 line, and the angle of maximum deviation is a right angle. The attainable angle then becomes equal to two right angles, so that one half of the horizon is accessible to the boats. Now, if P1 M is the direction of the boat or of its bow in the air, then P M… … Fig. 5. direction of the wind and that of the boat; the maxi- mum velocity is twice that of the wind or of the in- herent velocity, and the minimum velocity is zero. Finally, if the inherent velocity v is greater than that of the wind V, then, according to Fig. 6, the point of departure, P, will…
Aeronautics
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