Potez X

The Potez X was a three-engined biplane with a fixed nosewheel landing gear supplemented with a tailskid.[1] The first variant was the Potez X A which was powered by three 140 hp (104 kW) Hispano-Suiza 8Aa piston engines, two strut-mounted between the upper and lower wings and one nose-mounted.[1] It had an enclosed cabin for 10 passengers with the pilot in an open cockpit behind the cabin.[1] Later the engines were changed to more powerful Hispano-Suiza 8Ab versions.[1] Two other variants were built with 280 hp (209 kW) Hispano-Suiza 8Bec engines, the X B was a military variant and the X C a commercial variant.[1]

The Potez X formed the basis of two similar airliners in the Potez XVIII and Potez XXII.[2][3]

XA

Original commercial variant with three 100 kW (140 hp) Hispano-Suiza 8Aa piston engines.[1]

XB

Military variant with 220 kW (300 hp) Hispano-Suiza 8Fb engines.[1]

XC

Civil variant with 210 kW (280 hp) Hispano-Suiza 8Bec engines.[1]

Potez X 3-view drawing from Les Ailes July 7, 1921

General characteristics

• Crew: 1
• Capacity: 10 passengers
• Length: 12.95 m (42 ft 6 in)
• Wingspan: 18.40 m (60 ft 4 in)
• Height: 4.15 m (13 ft 7 in)
• Wing area: 94 m² (1,010 sq ft)
• Empty weight: 1,800 kg (3,968 lb)
• Gross weight: 3,090 kg (6,812 lb)
• Powerplant: 3 × Hispano-Suiza 8Ab , 130 kW (180 hp) each

Performance

• Maximum speed: 165 km/h (103 mph, 89 kn)
• Cruise speed: 132 km/h (82 mph, 71 kn)
• Range: 1,000 km (620 mi, 540 nmi)
• Service ceiling: 5,500 m (18,000 ft)