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The Bücker Bü 131 Jungmann (freshman, young man)[note 1][1] is a German 1930s basic training aircraft which was used by the Luftwaffe during World War II.

Bü 131 Jungmann
Role Basic trainer
National origin Germany
Manufacturer Bücker Flugzeugbau
Designer Carl Bücker [de]
First flight 27 April 1934
Introduction 1935 (Luftwaffe)
Retired 1968 (Spanish Air Force)
Primary users Luftwaffe
Spanish Air Force
Imperial Japanese Army Air Service
Royal Hungarian Air Force
Produced 1935–1945
Number built around 5000
Developed into Bücker Bü 133 Jungmeister

Development


After serving in the Kaiserliche Marine in World War I, Carl Bücker moved to Sweden where he became managing director of Svenska Aero AB (Not to be confused with Svenska Aeroplan AB, SAAB). He later returned to Germany with Anders J Andersson, a young designer from SAAB. Bücker Flugzeugbau GmbH was founded in Berlin-Johannisthal,[2] in 1932, with the first aircraft to see production being the Bü 131 Jungmann.

While it was Bücker Flugzeugbau's first production type,[2] the Bü 131A was the last biplane built in Germany.[2] It had two open cockpits in tandem and fixed landing gear.[2] The fuselage was steel tube, covered in fabric and metal,[2] the wings wood and fabric.[2] It first flew on the 80 hp (60 kW) Hirth HM60R.[2]

In 1936, it was followed by the Bü 131B, with a 105 hp (78 kW) Hirth 504A-2.[2]

Most wartime production for the Luftwaffe was by Aero in Prague.[2]


Operational history


A Japanese Kokusai Ki-86A in 1945.
A Japanese Kokusai Ki-86A in 1945.

Sturdy and agile, the Bü 131A was first delivered to the Deutscher Luftsportverband (DLV).[2] The Bü 131B was selected as the primary basic trainer for the German Luftwaffe,[2] and it served with nearly all of the Luftwaffe's primary flying schools during the war, as well as with night harassment units such as Nachtschlacht Gruppen (NSGr) 2, 11, and 12.[2] Yugoslavia was the main prewar export customer; "as many as 400 may have found their way" there.[2] She was joined by Bulgaria with 15 and Romania with 40.[2]

Production licenses were granted to Switzerland, which operated 94, of which 88 were built under licence by Dornier.[2] About 530 were built in Spain[2] with production continuing at CASA until the early 1960s, and they remained in service as the Spanish Air Force's primary basic trainer until 1968. Hungary operated 315,[2] while ten were built in Czechoslovakia by Tatra as the T 131, before World War II.[2] In Japan, 1,037 were built for the Imperial Japanese Army Air Service with Hatsukaze engines as the Kokusai Ki-86 and 339 for the Imperial Japanese Navy Air Service as the Kyushu K9W.[2]

In the 1960s and early 70s the Spanish, Swiss and Czech governments sold their Jungmanns to private owners and many were exported to the United States. About 200 Jungmanns survive to this day, many having been fitted with 150 hp (110 kW) Lycoming O-320 or 180 hp (130 kW) O-360 four-cylinder horizontally-opposed engines with inverted fuel and oil systems for aerobatic flight.

The Jungmann is prized for its outstanding handling characteristics when compared to other antique bi-planes and even some modern aerobatic types. Upkeep and maintenance for the Jungmann is comparable to other antique aircraft and is superior when fitted with the Lycoming engines. Airframe parts are available from sources both in the United States and Europe.

In 1994, the Bü 131 was restored to production briefly using CASA jigs by Bücker Prado in Spain, with 21 aircraft constructed as the BP 131,[2] while in Poland SSH Janusz Karasiewicz also started production of a version of the Jungmann based on Czech plans in 1994.[3] 20 were manufactured in Poland between 1994 and 2000.[4]


Variants


Spanish built CASA 1.131 still being flown
Spanish built CASA 1.131 still being flown
Lycoming-powered Bü 131s in the US
Lycoming-powered Bü 131s in the US
Bü 131A
Two-seat primary trainer biplane. Initial production version.
Bü 131B
Improved version, powered by the more powerful Hirth HM 504A-2 piston engine.
Bü 131C
Experimental version, fitted with 90 hp (67 kW) Cirrus Minor piston engine. One built.
Nippon Kokusai Ki-86A Army Type 4 Primary Trainer
Japanese production version for the Imperial Japanese Army Air Service. Powered by a Hitachi Ha47
Nippon Kokusai Ki-86B Army Type 4 Primary Trainer
Wooden airframe version to relieve scarce supplies of strategic materials.
Kyushu K9W1 Momiji Navy Type 2 Trainer Model 11
Japanese production version for the Imperial Japanese Navy. Powered by the Hitachi GK4A Hatsukaze 11
Tatra T.131
Czechoslovakia, pre-war licence production in Tatra Kopřivnice.
Aero C-4
Mass-produced in Aero factory in occupied Czechoslovakia during wartime under original Bücker Bü 131B designation, used postwar with original Hirth engine.
Aero C-104
Czechoslovakia, postwar development with a Walter Minor 4-III engine, 260 built.
CASA 1.131
Spanish license-built versions with Hirth HM 504 or 125 hp (93 kW) ENMA Tigre G-IVA.[5]
BP 131
modern license-built version
SSH T-131P
Pre-production modern Polish version, powered by 78 kW (105 hp) Walter Minor 4-III engine. Four built from 1994.[3]
SSH T-131PA
Main Polish production version, with 103 kW (138 hp) LOM M332AK engine. First flew 1995.[3]

Operators


Tatra T.131 photo from Le Pontentiel Aérien Mondial 1936
Tatra T.131 photo from Le Pontentiel Aérien Mondial 1936
A Swiss Air Force Bü 131 B.
A Swiss Air Force Bü 131 B.
Jungmann G-RETA of the Shuttleworth Trust enters a loop
Jungmann G-RETA of the Shuttleworth Trust enters a loop
 Bulgaria
 Czechoslovakia
 Independent State of Croatia
 Germany
 Greece
 Hungary
 Japan
 Lithuania
 Netherlands
 Poland
 Romania
 Slovakia
 South Africa
 Spain
  Switzerland
 Kingdom of Yugoslavia
 Yugoslavia



Specifications (Bü 131B)


a 1938 Bü 131
a 1938 Bü 131
Bücker Bü 131B Jungmann (Polish Aviation Museum)
Bücker Bü 131B Jungmann
(Polish Aviation Museum)

Data from Jane's Fighting Aircraft of World War II[6]

General characteristics

Performance

2,000 m (6,562 ft) in 12 minutes
3,000 m (9,843 ft) in 23 minutes
4,000 m (13,123 ft) in 45 minutes

See also


Shuttleworth's Jungmann G-RETA at Old Warden
Shuttleworth's Jungmann G-RETA at Old Warden

Related development

Aircraft of comparable role, configuration, and era

Related lists


References


Wikimedia Commons has media related to Bücker Bü 131.

Notes


  1. Commonly translated as young man, but often used to refer to a freshman, or a member of an organization in their first year, per Sarjeant, 1971, p.253.

Citations


  1. "German-English translation for "Jungmann"". en.langenscheidt.com. Stuttgart: PONS. 1 January 2020. Retrieved 2 March 2020. Jungmann m (Jungmann(e)s, Jungmänner): youngster, young man, recruit in his first year of service
  2. Ketle and Rolfe 1996, p. 12.
  3. Jackson 2003, pp. 344–345.
  4. Morgała, Andrzej Morgała (2003). Samoloty wojskowe w Polsce 1924–1939. Warsaw: Bellona, p. 316. ISBN 83-11-09319-9 (in Polish)
  5. Sarjeant 1971, p. 256.
  6. Bridgeman 1946, p. 158.
  7. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Bibliography



На других языках

[de] Bücker Bü 131

Die Bücker Bü 131 Jungmann war das erste Flugzeug des Herstellers Bücker Flugzeugbau. Der Erstflug des einmotorigen Doppeldeckers fand am 27. April 1934 statt. Konstrukteur war der Schwede Anders J. Andersson. Eingesetzt wurde es an Flugschulen und in der neu entstandenen Luftwaffe, wo es eines der Standard-Schulflugzeuge wurde.
- [en] Bücker Bü 131 Jungmann

[fr] Bücker Bü 131

Le Bücker Bü 131 Jungmann (jeune homme) était un biplan d’entraînement réalisé par Bücker Flugzeugbau qui fut utilisé par la Luftwaffe pendant la Seconde Guerre mondiale.

[it] Bücker Bü 131

Il Bücker Bü 131 Jungmann (Giovane uomo in lingua tedesca) era un biplano monomotore biposto da addestramento basico prodotto dall'azienda tedesca dalla Bücker Flugzeugbau GmbH negli anni trenta ed utilizzato durante il periodo prebellico nelle scuole di volo della Luftwaffe.

[ru] Bücker Bü 131

Бюкер Bu 133 Юнгман (нем. Bücker Bü 131 «Jungmann», букв. — «молодой человек») — немецкий учебно-тренировочный самолёт, являвшийся основным в 1930-е годы. Использовался Люфтваффе во время Второй мировой войны. Самолёт Bücker Bü 131 был выпущен в количестве более чем 5000 экземпляров и экспортировался в 23 страны.


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