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Aviation History
1918
1918 - 0254.PDF
MARCH 7, 1918. AN ALBATROS FIGHTING BIPLANE. Continued from page 227.) HAVING dealt with the bulkheads or transverse par- titions of the Mb&tros fuselage in our issue of last week, the longitudinal rails will be considered next. These are of a somewhat complicated nature, varying as they do along their entire length, not only as regards being tapered from front to rear, but also in the different form of spindling out employed at the various points, and in the method of reinforcing with other strips of with a triangular section strip, so as to carry the three- ply covering into the sloping side. Similarly at the section A, Fig. 6. the longeron, which is here of solid rectangular section, is reinforced on the outer side with a curved trip, spindled out externally, and with a smaller strip on the lower face of the longeron. This is done partly to strengthen the longeron, which at this point is subject to an increased compressive Front view of the Albatros biplane. wood, partly in order to increase their strength where required and partly to make their overall section con- form to the various angles and curvatures of the out- side three-ply covering of the fuselage. From Fig. 6 a fairly good idea may be formed of the shape and dimensions of the longerons at various points. The lower one (left hand) is originally of rectangular section, but is lightened from point to point by various forms of spindling and stop-chamfering. Thus at the point B (see key, diagram Fig. 6), the inner face of the bottom longeron is spindled out on its inner face with a curved cutter. At other points of this longeron farther towards the stern various load, owing to the overhung engine, and also to afford attachment for the three-ply covering, which at this point changes from flat sided to rounded section where the sides gradually merge into the truncated cone of aluminium which forms the extreme nose of the body proper, i.e., at the point just behind the " spinner " on the air screw boss. . . The upper longeron, which is originally of rectangular section, is spindled out to channel and L sections at' various points, as shown in X, Y, Z, Fig. 6. So as to form an attachment for the curved top of the body, the top longerons have glued to their upper face additional strips of triangular section while at the Rear view of the Albatros biplane. sections are met with, as channel, solid rectangle, and point Y, Fig. 6., the section is left rectangular soL sections of various proportions. Between the hori- zontal stern post and the point at which the middle as to form a support for the gun ring. In additionto their function as strengthening members these longeron meets the lower one, the latter is reinforced strips serve the further purpose of preventing the 250
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