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Aviation History
1921
1921 - 0685.PDF
OCTOBER 20. 1921 •-V- THE DORNIER "DRAGON FLY" FLYING BOAT FROM time to time we have published descriptions and illustrations of the various products of the Zeppelin firm built to the designs of Herr Dornier: (" Some Dornier Milestones," December 16, 1920 ; the C. Ill monoplane, March 31, 1921 ; the Cs. II monoplane flying boat, April 21] May 21, and June 9, 1921). This week we are able to give istic Dornier stamp may be noticed. The most prominent of these are the aerofoil-floats projecting from the sides of the hull, which take the pla^P of the wing tip floats, and have the advanatage of contributing to the lift, instead of adding to the resistance, of the machine. As in previous Dornier models, the "Dragon Fly" is- B B _ •'••'. •>- The Fly' The H H H H H H H "--•*".• • - Dornier "Dragon ' Flying Boat : boat, with three on board, and 60 h.p., takes off. Inset, in B B H H ttafH B m B B B B flight. ffl H EHEESBHiHH some illustrations and a few particulars of Herr Dornier's latest design, a small, low-powered, three-seater monoplane flying boat. The " Dragon Fly," as this machine is called, was con- structed at Rorschach, on the Swiss side of Lake Constance (where a new factory has been formed by the Dornier Metal Aircraft Mfg. Co.), and it is, we believe, being used, by the Swiss Society Ad Astra Aero at Zurich and Geneva. It will be seen from the accompanying illustrations that the " Dragon Fly " possesses a pleasing and at the same time practical appearance. Also, several distinctive features of character- almost entirely of metal construction, duralumin being employed not only for the hull, but for the wings and wing covering as well. The wingS are of the semi-cantilever type, without dihedral or sweepback. They are, unlike the wings on the previous Dornier boats, built up in three sections and are made to fold back—a useful feature not often to be found in connection with flying boats. A short centre section, no wider than the hull, is mounted above the latter on a cdbane of four struts ; the outer sections are mounted to this centre section, being hinged at the rear spar roots. Built up with the centre section is a streamlined housing for , •trf '13 Span 27'-7" L<?n§th 23"-6's Chord 5'-5" Area 0/ Atfcin * • Pianos 15Okea.jrt DORNIER "DRAGON FLY" • FLYING BOAT -HalsKe € THE DORNIER " DRAGON FLY " FLYING BOAT : General arrangement drawings. ..;,.-:* 685 • ::.
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