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An improved variant of the O/100, the Handley Page O/400 multi-bay biplane bomber featured more powerful engines, a compressed air starting system and an improved fuel system. To meet Royal Air Force specifications, the wings of the O/400 were designed to fold back against the fuselage so that the aircraft could be stored in standard hangars. In 1918, the O/400 was used to bomb targets in Germany's Rurh and Saar industrial centers. By the end of the war, the RAF had 259 O/400s in service and continued to fly some of them until 1920.
Handley Page O/400 Specifications
Country: Great Britain
Manufacturer: Handley Page Ltd.
Type: Heavy Bomber
Entered Service: Spring 1917
Number Built: 550
Engine(s): 2 Rolls Royce Eagle VIII, 12 cylinder, liquid cooled, inline V, 360 hp (268 kW)
Wing Span: 100 ft (30.48 m)
Length: 62 ft 10¼ in (19.16 m)
Height: 22 ft (6.71 m)
Empty Weight: 8,502 lb (3,864 kg)
Gross Weight: 14,425 lb
Max Speed: 97.5 mph (157 km/h)
Ceiling: 8,500 ft (2,592 m)
Endurance: 8-9 hours
Crew: 4 or 5
Armament: 5 machine guns
2,000 lb (909 kg) of bombs
Handley Page O/400 Units
Royal Air Force: 58, 97, 115, 207, 214, 215, 216
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