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Aviation History
1924
1924 - 0772.PDF
DUTCH MILESTONES AT THE PARIS SHOW : Alongside with the latest Fokker D XIII biplane—which is fitted with a Napier "Lion" engine—is exhibited the little wire-braced monoplane built and flown by Mr. Fokker in 1911. As will be seen above, Mr. Fokker believed in tubular metal construction even in those days. Gothenburg last summer, and is of characteristically Fokker lines. The upper wing is large, of high aspect ratio and entirely constructed of wood, even to the wing covering, while the lower plane is of quite small dimensions, and serves mainly to steady the top plane against torsional loads, as, with the V struts running to the lower plane, any tendency to twist is resisted by the lower plane in drag. The top plane is carried on N-struts from the fuselage, and is braced laterally by a single outboard strut on each side. The lower plane, which, like the upper, is in one piece, slips into an opening in the sides of the fuselage and is secured in place by four bolts, as shown in one of our sketches. The fuselage is the usual Fokker welded-steel tube structure with wire bracing. The Napier " Lion " engine is neatly cowled in, the small overall size of the engine making this possible, and side radiators of a special type, capable of being withdrawn into the fuselage, leaving the nose free, enable a spinner to be used over the propeller boss. As the biplane wings are of the cantilever type, the V struts being, as already stated, for transmitting torsion mainly, the machine is very clean, and SOME FOKKER DETAILS : 1. View of the centre portion of the lower plane, showing fittings for attaching it to the fuselage. 2. One of the retractable radiators which are a feature of this machine. 772
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