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The Zeppelin-Lindau Rs.II (known incorrectly postwar as the Dornier Rs.II) was a biplane flying boat, designed by Claudius Dornier and built during 1914-15 on the German side of Lake Constance. Initially this aircraft was powered by three engines mounted inside the hull driving three pusher propellers via gearboxes and shafts. The later version was powered by four engines in two push-pull nacelles mounted between the wings.〔 ==Design and development== After a disastrous storm which wrecked the Rs.I, Dornier continued development of large seaplanes with the Rs.II. The design and construction drawings of the Rs.II had been prepared during 1915 and the airframe was completed rapidly after the loss of the Rs.I. Although resembling the Rs.I, there was little in common with the Rs.II, which had a much broader, shorter hull, low aspect ratio upper wing and open lattice tail unit.〔 The Rs.II, (Navy serial no 1433), as launched in 1916, consisted of a sesquiplane flying boat with a short but very broad fuselage and a tail unit supported at the end of a long open lattice box framework of tubular booms cross braced with cables. The short lower wings were intended to support stabilizing floats but these were found unnecessary due to the inherent stability of the broad hull. The tail unit comprised a biplane elevator assembly with a small separate tailplane above a pair of all-flying rudders and the large upper wing was supported by struts which also supported the propellers.〔 Power was supplied by three Maybach HS engines mounted inside the hull, transmitting power to the three propellers via clutches, gearboxes and shafts. The three propellers were mounted as pushers aft of the wing support structure at about mid-gap. Radiators for the internally mounted engines were mounted as a wide slab on the hull aft of the pilots cockpit.〔 The wing structure was formed by three built-up girder spars of triangular section with aluminium wing ribs spaced fairly wide apart; the wing fabric was sewn to special eyelets, which were attached to the framework at evenly spaced intervals. The lower wings were attached directly to the fuselage, touching the water when afloat, improving water-borne stability. The low aspect ratio upper wing was supported by a central frame work and N strut assemblies at 1/3rd span and 2/3rd span. Incidence of the upper wing was adjustable by altering the length of the forward N-strut tubes.〔 Flying controls were fairly conventional despite their size, with unbalanced ailerons on the upper wing and a large biplane elevator unit trailing a small tailplane and small rudders under the tailplane. To improve lateral control at low speeds, and improve spin resistance, the tip incidence was washed-out, ensuring that the inner wing sections stalled first.〔 The hull, constructed of steel bulkheads and stringers with Duralumin skinning on the sides and bottom, but fabric on parts of the upper decking, housed the crew in a cockpit near the nose, who were protected by a raised coaming. The engines and fuel lines were also housed inside the hull; they could be serviced in flight by a mechanic.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Zeppelin-Lindau Rs.II」の詳細全文を読む スポンサード リンク
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