Thai Paperwork WS 07 - SAAB J-21 mysliwiec(1-48).pdf

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PAPERWOR 7
Cardm dels. net
Scale 1/48 design by NOBI
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Modeling the World in Paper
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PAPERWOR 7
Scale 1/48 design by NOBI
For individual use only, under no circumstances can this document be distributed without permission. Copyright 2003-2004
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PAPERWOR 7
Scale 1/48 design by NOBI
For individual use only, under no circumstances can this document be distributed without permission. Copyright 2003-2004
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W A R B I R D S S E R I E S
PAPERWOR 7
Scale 1/48 design by NOBI
For individual use only, under no circumstances can this document be distributed without permission. Copyright 2003-2004
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SAAB J-21
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The unorthodox SAAB J 21 fighter was a domestic attempt to provide the Swedish Air Force with a
true high performance fighter. It's design was conducted during war years, when there was no
practical possibility for Sweden to acquire modern aircraft from abroad.
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In 1941 SAABs designer Frid W?nstr?m presented the Air Force with concept of a fighter plane
powered by a Daimler Benz liquid-cooled V-12 engine. W?nstr?m proposed a push-propeller layout
and a tricycle undercarriage. This configuration was expected to have several important
advantages - excellent forward visibility, heavy armament concentrated in the fuselage, good
landing characteristics. The Air Force did not accept the design at once, and for a period of time it
seemed that the J 21 project would be abandoned in favor of the more conventional J 23. But
finally, in December 1941, the go-ahead for the project was given.
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At the same time the Air Force arranged for purchase and license production of Daimler Benz
engines from Germany. This finally resulted in the purchase of seventy-plus DB 605B engines of
1475 hp in 1943 and a contract for license production. Actually, the first Swedish-made engine
wasn't delivered until after the war.
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The J 21 emerged as a very advanced airframe with streamlined shape, twin tail booms, laminar
wing profile and ejection seat for the pilot (which actually worked well in service, unlike some of
the early ejection seat designs of German Luftwaffe). The first of the three prototypes made it's
maiden flight in July 1943. However, the first series machines were delivered in 1945.
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A total of 298 SAAB 21s were produced in five production batches. They served from 1946 to 1954.
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Series aircraft were not without problems. Because of the propeller's placement, engine cooling
proved to be inadequate, especially on the ground - a serious problem that was never really worked
out. The aircraft also lacked the agility necessary for a dogfighter. On a positive side, it proved to
be a good gun platform and was easy to start and land.
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These properties lead to the decision to adapt the J21 to ground attack role. The bomb-carrying
version, the J21A-3, made its debut in May 1947, with the capacity for a 700 kg bomb load or 8
rocket projectiles. Because of the new role, the designation A21 or even B21 was used in service
units (A=attack, B=bomber).
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Worth mentioning is another advantage of the J21s layout. In 1947, SAAB converted the J21 to jet
propulsion, installing the de Havilland Goblin instead of the DB 605. This new version was put into
production as J21R. Thus the J21 became one of only two propeller-driven aircraft in the world
that were successfully converted and produced as jets (the other one being Yak-3).
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W A R B I R D S S E R I E S
PAPERWOR 7
Scale 1/48 design by NOBI
For individual use only, under no circumstances can this document be distributed without permission. Copyright 2003-2004
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*** Add some weight in nose to make model can stand
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