Junkers Ju 160

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Ju 160
Junkers Ju 160.jpg
RoleSmall fast passenger transport
Manufacturer Junkers
First flight30 January 1934
Introduction1935
Primary users Deutsche Lufthansa
Luftwaffe
Imperial Japanese Navy Air Service
Number built47

The Junkers Ju 160 was a single-engine low-wing passenger transport aircraft designed and produced by the German aircraft manufacturer Junkers

Contents

Derived from the Ju 60, the Ju 160 was targeted at the same fast airliner market as the Heinkel He 70 Blitz and the Lockheed Model 9 Orion. The German flag carrier Deutsche Lufthansa has commissioned the unsuccessful Ju 60; Junkers decided to design an improved derivative in 1934. Capable of seating up to six seat passengers and operated by a crew of two, the Ju 160 benefitted from the adoption of a new wing, a more powerful engine, and an aerodynamically cleaner exterior (which included an inwards-retracting undercarriage. The first prototype was taken from the Ju 60's assembly line.

The German flag carrier Deutsche Lufthansa operated a fleet of at least 20 aircraft, which it used largely on internal routes. Several other airlines also procured the Ju 160, including Weser Flugbau and at least one Manchurian operator. The type commenced civil operations in 1935 and was operating some of Deutsche Lufthansa's routes as late as 1941. Following the start of the Second World War, the Luftwaffe opted to impress the majority of civil Ju 160s in Germany; in a military capacity, the aircraft was largely used for communication and training purposes.

Design and development

The origins of the Ju 160 are directly tied to that of the preceding Junkers Ju 60 of the early 1930s. [1] The development of this aircraft had been commissioned by the German flag carrier Deutsche Lufthansa in response to the arrival of the American Lockheed Model 9 Orion at rival airline Swissair. The Ju 60 made it into flight and was formally evaluated by the airline, but it quickly became clear that the Ju 60 was unable to match the top speeds of rival aircraft, such as the Heinkel He 70 Blitz. [1] Having proven to be uncompetitive, only two Ju 60s were ever completed. Nevertheless, during 1934, design work commenced on an improved variant of the Ju 60, which received the designation Ju 160. [2]

Akin to the Ju 60 and Junkers' established design convention, the Ju 160 was a low-wing cantilever aircraft. While the Ju 160 shared the same general configuration and many similarities with the preceding Ju 60, it featured numerous changes aimed at bolstering its performance. [3] The Ju 160 was cleaned up aerodynamically, [4] and was outfitted with a more powerful BMW 132A radial engine (capable of producing up to 490 kW (660 hp); this combination was able to make the aircraft roughly 72 km/h (45 mph) faster that its predecessor.[ citation needed ]

One of the more noticeable changes was the adoption of a new wing, which possessed a swept leading edge and a straight trailing edge. A Junkers-style double-wing formed both the ailerons and flaps. [3] The wing planform was also revised to have taper only on the leading edge. These wings were built around a twin spars and were covered in sheet duralumin.[ citation needed ] Smooth metal sheeting was used across the entirety of the exterior of the Ju 160 while the Ju 60 had used Junkers' traditional corrugated skin across the wings and some areas around the tail. A further visual difference between the two aircraft was that the Ju 60 had four cabin windows on either side of the fuselage while the Ju 160 had only three on either side. [3] The Ju 160 featured an inwards-retracting main undercarriage. [3]

Other aerodynamic improvements of the Ju 160 included the cockpit enclosure being better faired into the fuselage. Seating was for six passengers in two forward-facing and one rear-facing pairs. The crew, comprising a pilot and radio operator, sat in tandem within an enclosed cockpit. While designed to be typically flown by a single pilot, a folding control column and other flight controls was provisioned for a second pilot to be seated starboard of the pilot.[ citation needed ]

The first prototype Ju 160 V1, D-UNOR, was taken from the Ju 60 assembly line. [5] Deutsch Lufthansa formally evaluated this aircraft; following trials, a number of changes were made to the final prototype (V3), which included a wider chord, a reduced depth rudder, a faired tailwheel, and minor modifications to the exterior door. [4] [3] The second prototype (V2) was for a military version.

The first civil production series were designated Ju 160A-0.

Operational history

Including prototypes, 47 Ju 160s were produced. [4] [5] Deutsch Lufthansa were the primarily commercial operator of the type, receiving at least 20 production standard aircraft. [3] During 1935 alone, the airline's fleet was being flown on 13 separate domestic routes. Furthermore, Deutsch Lufthansa Ju 160 was also sued on some international routes, such as between Breslau and Prague. [3]

The Ju 160 stayed in service on Deutsch Lufthansa's fast route between Berlin and Vienna until 1941. One of the Ju 160s was initially operated by the Lufthansa subsidiary Eurasia; this aircraft, however, crashed in Shanghai and was taken back to Germany for repairs and was later flown by to Deutsch Lufthansa. The first 11 Lufthansa aircraft were Ju 160 A-0s registered in 1935, followed by 10 D-0s in 1936; the latter version featured enlarged cockpit windows and other crew comfort enhancements. [4] Weser Flugbau operated an ex-Lufthansa aircraft. Two aircraft also appeared on the Manchurian civil register, one of then having earlier been registered in Germany, the other sold directly. The Manchurian aircraft appear to have ended up in Japan.[ citation needed ]

The German Research Institute for Aviation ( Deutsche Versuchsanstalt fur Luftfahrt e.V ) operated four Ju 160s. [5] Five others operated at the Flight Research Centre (E-Stelle) at Travemünde. The remaining aircraft were mostly military versions. The majority of the surviving civilian Ju 160s in Germany were eventually impressed in Luftwaffe service shortly following the outbreak of the Second World War. They were used to conduct training and communications missions. [3]

Operators

Flag of Germany (1935-1945).svg  Germany
Flag of Japan.svg  Japan

Specifications (Ju 160)

Data fromGerman Aircraft of the Second World War [3]

General characteristics

Performance

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

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References

Citations

  1. 1 2 Smith and Kay 1972, p. 422.
  2. Smith and Kay 1972, pp. 422-423.
  3. 1 2 3 4 5 6 7 8 9 Smith and Kay 1972, p. 423.
  4. 1 2 3 4 Turner and Nowarra 1971, [ page needed ].
  5. 1 2 3 "Golden Years of Aviation - Main". goldenyears.ukf.net. Archived from the original on 19 February 2012. Retrieved 30 May 2012.
  6. 1 2 Grey, C. & Bridgman, L. Jane's All the World's Aircraft 1938 (1972). Newton Abbot: David & Charles (Publishers) Ltd. ISBN   0-7153-5734-4

Bibliography

Further reading