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Aviation History
1928
1928 - 0190.PDF
MARCH 15, 1928 THE BREDA A.7 MONOPLANE A Successful Italian Military Machine ALTHOUGH now one of the laigest aircraft constructing firms in Italy, the Societa Italiana Ernesto Breda, of Milan, is not, perhaps, so well known in this capacity to our British readers as some of the other Italian and Continental aircraft concerns. We are glad, therefore, to be able this week to give a brief description of one of the latest Breda products, which has, we understand, given very satisfactory results in Italy. It might be as well before proceeding with our description to say a few words regarding the Breda firm itself. An old- established Italian engineering company in pre-war days, S. I. E. Breda, during the Great War produced large quantities of aircraft parts and accessories. It also built Caproni machines and Isotta Fraschini aero engines. work, for which it was designed. Except for the fabric covering of the planes and fuselage, the A.7 is entirely of metal (steel and duralumin) construction. The wings possess several interesting features ; they have a very efficient section of medium thickness, and vary as regards the latter from maximum at a point about midway out from the root to a minimum at the tips and root. They are supported above the fuselage on a cabane consisting of two inverted V struts, while a pair of bracing struts on either side extend from the lower longerons of the fuselage up to the wings, where they are attached at the point of maximum thickness. These struts consist of steel tubes, with streamline fairings. TtE BREDA A.7 MONOPLANE : Three-quarter front view of the recent Italian reconnaissance machine fitted with a 500 h.p. Asso engine. After the war the Breda firm produced a number of experi- mental machines of its own design, some of which were of more than usual interest, and were very successful. Subse- quently it took up the problem of metal construction, and designed some all-metal machines which gave very satis- factory results. Besides the construction of aircraft, the Breda firm also runs a highly efficient school of flying, about which we hope to have something further to say on a future occasion. The Breda A.7—the machine we are about to describe— is a 2-seater high-wing (or " Parasol ") " semi-cantilever " monoplane, a type particularly suitable for reconnaissance Constructionally the A.7 wings are exceptionally strong and rigid, thorough tests having been carried out with the first experimental machine, resulting in many modifications and improvements. For instance, instead of wooden spars, these are now constructed of steel, in lattice form, the flanges and webs being of sheet-steel cold-pressed to the required sections. The transverse members are also of pressed steel, and are riveted to the main spars. The ribs are of duralumin, and abut against the front spar ; the leading edge forms a separate unit, complete with frame- work and metal covering, attached to the front spar—thus forming a large single casing. It is claimed for this form of SPAN LENGTH WING AREA 51'- 9" 34- 6" 462 S<j. BREDA A-7 MONOPLANE 5OOI-P IF ASSO ENGINE THE BREDA A.7 MONOPLANE : General Arrangement Drawings. .170
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