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 [fr].[1] Pagny designed two similar single seat monoplanes for Hanriot and Ponnier, the Hanriot D.I and the Ponnier D.III;[2] the latter was sometimes referred to as the Hanriot D.III.[3] His designs reflected Nieuport practice, particularly with the replacement of Hanriot's graceful boat-like shell fuselages with flat sided, deep chested ones.[1]
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-Lambdarotary engine, which delivered 160 hp (119 kW) 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.[4]
Jane's All the World's Aircraft 1913 describes a longer (6.65 m (21 ft 10 in)) Hanriot D.III with a 100 hp (75 kW) Gnome engine; this motor does not appear in other cited contemporary accounts.[3]
Operational historyedit
The D.III participated in the Gordon-Bennett Trophy race held at Rheims and piloted by Emile Védrines. The elimination race over 100 km (62 mi) left four aircraft in the final, flown over 200 km (124 mi) on Monday 29 September. After an hour's flight the Ponnier finished second, just 66 seconds behind Maurice Prévost in a Deperdussin Monocoque; both aircraft used the same double row engine.[5]
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^ abMunson, Kenneth (1969). The Pocket Encyclopedia of World Aircraft in Colour - Pioneer Aircraft 1903-14. London: Blandford Press. p. 145. ISBN0-7137-0500-0.
^ abJane, Fred T. (1969). Jane's All the World's Aircraft 1913. London: David & Charles. p. 95. ISBN0-7153-4388-2.
^ ab"The Ponnier Monoplane". Flight. Vol. V, no. 47. 22 November 1913. pp. 1271–3.
^"The Rheims Meeting and Gordon-Bennett Trophy". Flight. Vol. V, no. 40. 4 October 1913. pp. 1255–7.
December 15, 2023
ponnier, french, monoplane, racing, aircraft, designed, compete, 1913, gordon, bennett, trophy, race, finished, close, second, iiiemile, védrines, rheims, gordon, bennett, racerole, racing, aircraftnational, origin, francemanufacturer, avions, ponnierdesigner,. 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 D IIIEmile Vedrines in the D III at Rheims for the Gordon Bennett raceRole Racing aircraftNational origin FranceManufacturer Avions PonnierDesigner Alfred PagnyFirst flight 1913Number built 1 Contents 1 Development 2 Operational history 3 Specifications 160 hp Gnome 4 ReferencesDevelopment editDuring 1911 Rene 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 fr 1 Pagny designed two similar single seat monoplanes for Hanriot and Ponnier the Hanriot D I and the Ponnier D III 2 the latter was sometimes referred to as the Hanriot D III 3 His designs reflected Nieuport practice particularly with the replacement of Hanriot s graceful boat like shell fuselages with flat sided deep chested ones 1 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 160 hp 119 kW 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 4 Jane s All the World s Aircraft 1913 describes a longer 6 65 m 21 ft 10 in Hanriot D III with a 100 hp 75 kW Gnome engine this motor does not appear in other cited contemporary accounts 3 Operational history editThe D III participated in the Gordon Bennett Trophy race held at Rheims and piloted by Emile Vedrines The elimination race over 100 km 62 mi left four aircraft in the final flown over 200 km 124 mi on Monday 29 September After an hour s flight the Ponnier finished second just 66 seconds behind Maurice Prevost in a Deperdussin Monocoque both aircraft used the same double row engine 5 Specifications 160 hp Gnome edit nbsp Data from Flight 22 November 1913 4 General characteristicsCrew One Length 5 41 m 17 ft 9 in Wingspan 7 16 m 23 ft 6 in Wing area 8 7 m2 94 sq ft Gross weight 500 kg 1 102 lb 2 Powerplant 1 Gnome Lambda Lambda 14 cylinder two row rotary engine 120 kW 160 hp Propellers 2 bladed 2 08 m 6 ft 10 in diameterPerformance Maximum speed 200 km h 120 mph 110 kn 2 References edit nbsp Wikimedia Commons has media related to Ponnier D III a b Munson Kenneth 1969 The Pocket Encyclopedia of World Aircraft in Colour Pioneer Aircraft 1903 14 London Blandford Press p 145 ISBN 0 7137 0500 0 a b c Opdycke Leonard E 1999 French aeroplanes before the Great War Atglen PA USA Shiffer Publishing Ltd p 209 ISBN 0 7643 0752 5 a b Jane Fred T 1969 Jane s All the World s Aircraft 1913 London David amp Charles p 95 ISBN 0 7153 4388 2 a b The Ponnier Monoplane Flight Vol V no 47 22 November 1913 pp 1271 3 The Rheims Meeting and Gordon Bennett Trophy Flight Vol V no 40 4 October 1913 pp 1255 7 Retrieved from https en wikipedia org w index php title Ponnier D III amp oldid 1162972255, wikipedia, wiki, book, books, library,
