Junkers F.13

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The Junkers F.13 (also known as the F 13, and developed under an engineering designation of J 13), was an all-metal transport German aircraft that first flew on June 25, 1919.

It was the world's first civilian plane with an all light metal internal skeletal frame. Tinplate was used for most of the skin, however. It served with many countries and was widely exported. It flew with a Junkers airline until it merged with Lufthansa when it flew with them. It saw active service until the 1940s. About 330 were built with many variants including different engines and a seaplane variant.

Junkers F-13 in Deutschen Museum

[edit] Specifications

Data differed in accordance to engine used

Function: 6-seat transport
Engine: One of the following six-cylinder in-line liquid-cooled engines:
- BMW-IIIa (max. power 240 hp /176 kW)
- BMW-IV (250 hp /184 kW)
- Junkers L-2 (265 hp /194 kW)
- Junkers L-5 (310 hp /228 kW)
Span: 58 ft 2.8 in (17.75 m)
Length: 31 ft 6 in (9.60 m)
Height: 13 ft 5.4 in (4.10 m)
Wing area: 463 sq ft (43 m²)
Empty weight: 2,701 lb (1,225 kg)
Max takeoff weight: 4,409 lb (2,000 kg)
Max speed: 115 mph (185 km/h)
Max climb: 650 ft (198 m)/min
Service ceiling: 16,404 ft (5,000 m)
Range: 609 ml (980 km)