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Short Admiralty Type 74
The Short Admiralty Type 74 was a single-engined biplane tractor seaplane with non-folding wings, which saw service with the Royal Naval Air Service during the First World War.
==Design and development==
The Type 74 incorporated some of the innovations Horace Short had introduced on the Short Admiralty Type 42, including manganese-steel tube struts instead of wood. In addition to the two main rubber-sprung floats below the fuselage and the single tail float, it also had smaller floats attached below the tips of the lower wing. Ailerons were mounted on the upper wing only, the latter extending beyond the span of the lower wing. The extensions were braced by diagonal struts to the lower wing-tips.
Since it was intended for use as a coastal patrol seaplane operating from coastal stations, there was no requirement for the Type 74 to have folding wings.〔The aircraft sometimes referred to by the Admiralty as the "Short Improved Type 74" was in fact a folder version of the prototype Short Type 135; three such aircraft took part in the Cuxhaven Raid.〕
The Type 74 was powered by a 100 hp (74.6 kW) Gnome double Omega engine, which provided a maximum flight duration of 5 hours.〔Barnes and James, p.99.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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