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AD Navyplane
The AD Navyplane was designed by the British Admiralty's Air Department as a reconnaissance aircraft for use during World War I. Performance of the prototype was so disappointing that plans to produce it were cancelled almost immediately.
The Navyplane was designed by the Admiralty's Harold Bolas with the assistance of R.J. Mitchell of Supermarine. It was a pusher floatplane biplane with the pilot and observer being seated ahead of the wings in a streamlined lightweight nacelle mounted in the gap between the upper and lower sets of wings. A Smith Static radial engine and a pusher propeller were installed behind them.〔Andrews and Morgan 1987, p.25.〕
Two examples were ordered in 1916 for the Royal Naval Air Service (RNAS).〔Andrews and Morgan 1987, p.26.〕 Serial numbers were allocated for seven Navyplanes (9095-'96, N.1070-'74) but just one prototype (9095) was completed.〔Bruce 1957, p.9.〕 Tests of this Supermarine-built prototype commenced in August 1916 (flown by Lieutenant-Commander John Seddon) but proved seriously underpowered and unsatisfactory. The engine was replaced with an AR.1 rotary engine (which was later redesignated the BR.1 for Bentley Rotary 1) and retested in May 1917. However, even without a military load and observer, the Navyplane's performance still proved to be poor,〔Mason 1994, p.65.〕 and the design was abandoned on 27 August 1917, with no second prototype being produced.
Supermarine attempted to design an improved version to replace the Short 184, the design, the Supermarine Patrol Seaplane, being powered by a 200 hp (149 kW) Sunbeam engine. While contracts for six aircraft were placed, work was abandoned before a prototype was built, the Short 184 proving adequate in the patrol role.〔〔
==Specifications (AD Navyplane)==
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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