Figs.1,2 8 3 .A.C.A. TschnicE-.l L'-aniorandum Fo.407 J- /\ Fig.l Above, a diagrammatic representa.tion of the wing bracing of tlie Breguet airplanes. Below, that of the Nieuport-Delage 43', … Fig..2 Details of the forged duralumin spar box of the Breguet 19. The dotted lines in the lower sketch give an idea of the manner in which the part was forged.
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