Pomilio, Ottorino · New York, McGraw-Hill · leaf 31
Fig. 1G. Wing structure is becoming more and more uniform forall types of airplanes. As already pointed out, the frameconsists of two or more spars on which the ribs are fitted(Fig. 18). A leading edge made of wood connects the frontextremities of the ribs, while for the trailing edge a steelwire… … the function of which is to stiffen the wing horizontally.The rib is usually built up with a thin veneer web, to whichstrengthening flanges are glued and nailed or screwed(Fig. 19). The spars are usually of an I, channel, or boxsection for lightness (Fig. 20). The vertical struts between the upper…
Airplanes
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