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Designed by Pierre Dupont, the Hanriot HD.1 biplane was small but agile. It was rejected by the French Air Service in late 1916 but found favor with the air services of Belgium and Italy, becoming the standard Italian fighter during World War I. Though not as fast as the Albatros scouts or the Hansa-Brandenburg D.I, it was sturdy, reliable and very maneuverable. Entering service during the summer of 1917, the HD.1 proved its worth throughout the war. On 26 December 1917, Italian pilots equipped with the Hanriot HD.1 engaged and destroyed eleven German reconnaissance aircraft at Istrana without incurring a single loss. Willy Coppens, Belgium's consummate balloon-buster, scored most of his victories flying this aircraft.
 
Hanriot HD.I Specifications
Country: France
Manufacturer: Société Anonyme des Appareils d'Aviation Hanriot
Type: Fighter
First Introduced: 1916
Number Built: 831 in Italy by Macchi
125 in France
Engine(s): Le Rhône 9JB, 9 cylinder, air cooled rotary, 120 hp
Wing Span: 28 ft 6½ in (8.7 m)
Length: 19 ft 2¼ in (5.85 m)
Height: 9 ft 7¾ in (2.94 m)
Empty Weight: 847 lb (385 kg)
Gross Weight: 1,334 lb (605 kg)
Max Speed: 115 mph (184 km/h)
Ceiling: 20,670 ft (6,000 m)
Endurance: 2½ hours
Crew: 1
Armament: 1 machine gun
 
Units
Belgian Air Service: 1ère, 9me, 10me, 11me
Italian Air Service: 70a, 76a, 78a, 79a
 
 
Hanriot HD.I Aces (5)
1 Belgium Coppens de Houthulst, Willy Omer François Jean 37
2 Italy Baracchini, Flavio 21
3 Italy Riva, Antonio 13
4 Italy Mecozzi, Amedeo 9
5 Belgium De Meulemeester, Andre 5
 
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