Aeroplanes by James Slough Zerbe

Author:James Slough Zerbe
Language: eng
Format: epub
Publisher: Cupples & Leon company
Published: 1915-03-25T05:00:00+00:00

AEEOPLANE CONSTRUCTION 127

with the slightest suggestion only, of a pointed end. Its wings are perfectly flat, forming a true plane, not dished, or provided with a camhre, even, that upward curve, or bulge on the top of the aeroplane surface, which seems to possess such a fascination for many hird -flight advocates.

It will also be observed that the wing connection with the body is forward of the line A, which represents the point at which the body will balance itself, and this line passes through the wings so that there is an equal amount of supporting surface fore and aft of the line.

Again, the wing attachment is at the upper side of the body, and the vertical dimension of the body, or its thickness, is equal to four-fifths of the length of he wing.

The wing socket permits a motion similar to a universal joint. Fig. 55 showing how the inner end of the wing has a downward bend where it joins the back, as at B.

The Monoplane Foem.— For the purpose of making comparisons the illustrations of the monoplane show a machine of 300 square feet of surface, which necessitates a wing spread of forty feet from tip to tip, so that the general dimensions of each should be 18^ feet by 8% feet at its widest point.

First draw a square forty feet each way, as in

AEROPLANES

al line |

Fig. 58, and througli this make a horizontal 1, and four intermediate vertical lines are tben drawn, as 2, 3, 4, 5, thus providing five divisions, each eight feet wide. In the first division the planes A, B, are placed, and the tail, or elevator C, is one-half the width of the last division.

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