Aviation, theorico-pracitcal text-book for students (1919)
Carmina, Benjamin Morreale, 1871- [from old catalog] · New York, The Macmillan company · leaf 108
are of the velocity. While this is a great ad- vantage, it is in the meantime a great disadvantage, be- cause the air blown against the machine has also the effect of pushing it backward, so that the effective forward motion is the difference between the two forces; and although the increased lift… … Fig. 67 find the angle of pitch at a given point B, 3 feet out from the center, we can solve the problem graphically by means of the triangle of pitch. First we find the circumference described by the given point B in one revolution by multiplying the radius by 2 to find the diameter and then by…
Aeronautics
Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.