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__NOTOC__ The Zeppelin LZ 3 was a German experimental airship constructed in Friedrichshafen under the direction of Ferdinand von Zeppelin. It was first flown on 9 October 1906 and was later purchased by the German Army and operated as Z I until being retired in 1913. Before being purchased by the Army, LZ 3 made many flights and carried a number of influential passengers, including the German Crown Prince.〔Robinson 1973 p.34〕 ==Design and development== The design of LZ 3 closely followed that of its predecessor, the LZ 2. The hull framework was of identical layout and size and the same engines and propellers were used, although the volume of lifting gas was increased. LZ 2 had shown severe pitch instability, and LZ 3 was fitted with two pairs of biplane elevators, one set in front of the forward gondola and the second behind the rear gondola, and fixed biplane horizontal stabilisers at the rear of the hull. Following the first flights in 1906 some modifications were made: the triangular section keel between the gondolas was extended fore and aft, the biplane elevators were replaced by two sets of quadruple elevators mounted at either end of the cylindrical section of the hull and the rudders were mounted between the tips of the horizontal stabilisers.〔Robinson 1973 pp.33-4.〕 After the destruction of LZ 4 it was extensively rebuilt, with the addition of an extra bay increasing its length by 8 m (26 ft 6 in) and gas capacity to 12,888 cu m (430,800 cu ft). A large vertical fin was added above the stern of the hull and new engines, each providing 105 hp (78 kW) were fitted, giving a maximum speed of (27.5 mph)〔Robinson 1973 p.42.〕 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「LZ 3」の詳細全文を読む スポンサード リンク
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