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Ponnier D.III
The Ponnier D.III was a French monoplane racing aircraft, designed to compete in the 1913 Gordon Bennett Trophy race. It finished a close second.
==Development==
During 1911 René Hanriot hired Alfred Pagny, previously at Nieuport, as a designer. After Hanriot military prototypes failed to win orders at the Concours Militaire in late 1911 he sold his aircraft interests to another of his designers, Louis Alfred Ponnier.〔 Pagny designed two similar single seat monoplanes for Hanriot and Ponnier, the Hanriot D.I and the Ponnier D.III;〔 the latter was sometimes referred to as the Hanriot D.III.〔 His designs reflected Nieuport practice, particularly with the replacement of Hanriot's graceful boat-like shell fuselages with flat sided, deep chested ones.〔
The Ponnier D.III was a single seat, mid wing monoplane designed to compete in the 1913 Gordon Bennett Trophy race. Pairs of landing wires on each side met over the fuselage at a pyramidal four strut pylon and parallel flying wires went to the lower fuselage. An oil deflecting cowling, open at the bottom, surrounded the powerful double row, fourteen cylinder Gnome Lambda-Lambda rotary engine, which delivered to a 2 m diameter propeller. The oval, open cockpit was placed at mid-wing, just aft of the pylon centre. It had a finless rudder at the extreme rear of the fuselage and a straight edged tailplane mounted on the upper fuselage ahead of it. The elevators were aerodynamically separate but interconnected, controlled by central wires. The D.III had a fixed, conventional undercarriage with mainwheels on a single axle mounted to the fuselage by pairs of wire cross-braced V-struts, plus a simple elliptical leaf spring tailskid.〔
Jane's All the World's Aircraft 1913 describes a longer () Hanriot D.III with a Gnome engine; this motor does not appear in other cited contemporary accounts.〔
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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