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Junkers J.I

By Wikipedia,
the free encyclopedia,


Role Observation and ground-attack aircraft
Manufacturer Junkers
Designed by Otto Mader
First flight early 1917
Status Retired
Primary user Luftstreitkräfte
Number built 227

The Junkers J.I (manufacturer's designation J 4, not to be confused with the earlier, pioneering J 1 all-metal monoplane of 1915/16) was a German sesquiplane format warplane of World War I, developed for low-level observation and ground-attack. It is especially noteworthy as being the first all-metal aircraft to enter mass production. It was a slow aircraft, but its metal construction and heavy armour, which comprised an extremely advanced, single-unit armoured "bathtub" that ran from just behind the propeller to the rear crew position, and acted both as the main fuselage structure and engine mounting setup in one unit, was an effective shield against anti-aircraft artillery.


The only surviving Junkers J.I
The only surviving Junkers J.I

The experimental developments were interrupted by the breakout of World War I in August 1914. In May 1915, Junkers achieved a test order for the further development of his all-metal aircraft by the German War Ministry, when delegates of this Ministry visited the Dessau "Jco" (Junkers Company) plants. In September 1915, the production of the J 1 pioneering all-metal monoplane prototype began at Dessau, and at the beginning of December 1915, the first Junkers aircraft was finished.

The armoured "bathtub" concept of the J.I, because Hugo Junkers had to move his aircraft manufacturing equipment out of Germany into the Moscow suburb of Fili in the Soviet Union during the 1920s, could have been noticed by Sergei Ilyushin and remembered by him, when his design bureau worked on the similarly-equipped Ilyushin Il-2 Shturmovik Soviet ground-attack aircraft of World War II.

Operational history

It was well-liked by its crews, although its ponderous performance earned it the nickname "Furniture Van". They were used on the Western Front during the Kaiserschlacht of March 1918. There were 227 J.Is manufactured during the war.


 German Empire


Only one aircraft survived, bearing German military serial number J.I 586/17 and preserved at the Canada Aviation Museum in Ottawa.


General characteristics

  • Crew: Two, pilot and observer
  • Length: 9.1 m (29 ft 10 in)
  • Wingspan: 16.00 m (52 ft 6 in)
  • Height: 3.4 m (11 ft 2 in)
  • Wing area: 49.4 m² (531 ft²)
  • Empty weight: 1,766 kg (3,893 lb)
  • Gross weight: 2,140 kg (4,718 lb)
  • Powerplant: 1 × Benz Bz.IV, 149 kW (200 hp)


  • Maximum speed: 155 km/h (97 mph)
  • Range: 310 km (193 miles)
  • Service ceiling: 4,000 m (13,123 ft)


See also

Comparable aircraft

Text from Wikipedia is available under the Creative Commons Attribution/Share-Alike License; additional terms may apply.

Published - July 2009

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