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Aviation History
1932
1932 - 0711.PDF
FLIGHT, J01.Y 15, 1932 to where in the structure they are used, but the general principle remains the same, i.e., open-channel sections placed back-to- back. The sketches on this page show the fuselage construction very well. At the top of the page is a sketch of the general layout of the primary structure, with the various types of sections used and reference letters showing where they occur. In the lower sketches our artist shows how very simple the joints are, the primary structure hav ing been designed not only to give a form of construction which makes all rivets, etc., very accessible, but also to provide simple joints where two or more members meet. Over the cabin portion the longerons and diagonal struts are formed by two channels back-to-back, and the flanges are steadied by distance plates spaced at in tervals of a few inches. The struts are attached to the longerons by simple flat plates, the resulting joints being very simple and light. The rear portion of the fuselage has longerons and vertical struts, the latter being of the section shown in sketch D. Bracing is by R.A.F. wire, and is made very strong by being duplicated, so that it has been possible to do without wire bracing in the transverse panels. The ex treme tail end of the fuselage is a separate unit, making three in all for the fuselage. The secondary structure of the fuselage is mainly of wood, the covering over the cabin portion being three-ply carried on light stringers secured to the steel struc ture by wood screws. Over the rear por tion of the fuselage the covering is fabric. This is carried on the four corners only, which are well rounded and formed by aluminium sheet. There are no stringers, but the fabric is taped on at intervals. THE A.W. XV. : In C is shown the joint in the upper fuselage longeron, while D shows the construction used in the rear portion of the fuselage. (FLIGHT Sketches.) 663
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