Pomilio, Ottorino · New York, McGraw-Hill · leaf 271
stics of several types offabric. In this table we find for various types the weightper square yard, the resistance in pounds per square yard(referring to both woof and warp) and the ratio between theresistance and weight. We see that silk is the most con-venient material for lightness; the cost of… … Fig. 152. cent, of the total resistance; in fact the fabric on thewings is so disposed that the threads are at 45° to the ribs,thus working equally in both directions and having con-sequently the same resistance: in the calculations, there-fore, the minor resistance should be taken as a basis;…
Airplanes
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