Avia B.122#Versions
{{More citations needed|article|date=December 2010}}
{{Infobox aircraft
|name= B.122
|image=Avia Ba.122.jpg
|caption= Series of Ba.122s for Soviet Union
|type= aerobatic trainer aircraft
|manufacturer=Avia
|designer=František Novotný
|first_flight=1934
|introduction=
|retired=
|status=
|primary_user=Czechoslovak Air Force
|more_users= Slovak Air Force
Soviet Air Forces
Luftwaffe
|produced=
|number_built=
|unit cost=
|variants=
}}
The Avia B.122 was a Czechoslovak single-seat biplane aerobatic aircraft, developed in the mid-1930s. It saw some service in the first years of World War II.
History
In the spring of 1934, the Czechoslovak Army Command decided that some Czechoslovak Air Force pilots would participate in the international aerobatic competition Coupe Mondiale held at Vincennes, Paris, on 9–10 June. For this purpose, the Czechoslovak aircraft manufacturer Avia was given the task of designing and constructing an aircraft. The prototype, B.122, was presented after only six weeks.
The Czechoslovak pilots had only a few weeks to learn and master the aircraft as the competition was to be held in July 1934. Luckily, the design was quite successful and the Czechoslovak pilots managed to win the 4th (František Novák) and the 8th (Ján Ambruš) place in the competition.
Afterwards, the aircraft was modified, based on the pilots' inputs, and this resulted in the improved version, Ba.122. The Ba.122 was equipped with larger rudder and ailerons on both upper and lower wings. On the occasion of 1936 Summer Olympics in Berlin International Aerobatic Contest, "Internationaler Kunstflugwettbewerbs" was run by the German Aeroculub, "Aeroklub von Deutschland". Czechoslovak pilots won 2nd (Petr Široký), 3rd (František Novák) and 8th place (Ján Ambruš) with their Avias. In this contest new engine Avia RK-17 was introduced, with aircraft Ba.122.7 (OK-AWE), Ba.122.8 (OK-AWA). 1937 was also a successful year, as the Avias managed to win 1st and 3rd place at the International Aviation Meeting in Zurich in July/August 1937. Some of these aircraft were equipped with nine-cylinder Walter Pollux engines to fit into category of aeroplanes with engines above 20L. These successes led to export orders from the Soviet Union and Romania. The aircraft was later further developed into prototypes Ba.222, Ba.322 and Ba.422. The Czechoslovak Ministry of Defence ordered 45 Bs.122 trainers. However, the outbreak of World War II put an end to further development. Some Avias ended up in the German Luftwaffe when parts of Czechoslovakia were absorbed into Nazi Germany in 1939. Other aircraft were sold to the Slovak and Bulgarian air forces.
Variants
File:Avia_B.422_photo_L'Aerophile_May_1938.jpg
;B.122:3 prototype machines with Walter Castor II engine, B-122.2 and .3 later modified to Ba.122 standard
;Ba.122:improved variant with ailerons on both wings and enlarged rudder, mostly with Avia RK-17 engine
;Ba.222:Ba.122 with NACA cowling and wheel pants
;Ba.422:Ba.122 with upper gull wing to improve front visibility in inverted flight
;Bš.122:Military trainer variant of the Ba.122, staggered wings, Walter Castor II engine
;B.322:Bš-122 with enclosed cockpit and Townend cowling
Production
- B/Ba.122: 60 machines, serials B.122.1-Ba.122.45, Ba.122.101-115 (series for Soviet Union)
- Bš.122: 45 machines
- Ba.222: one prototype
- Ba.322: one prototype
- Ba.422: 2 machines
Operators
File:Avia Ba-122 (OK-AVE) pic3.JPG
;{{BUL}}: Bulgarian Air Force – 12 Bs 122 aircraft taken over from the Czechoslovak Air Force, named ″Vosa″ (″Wasp″)
;{{flag|Czechoslovakia}}: Czechoslovak Air Force – 45 Bš.122 and 45 B/Ba.122 aircraft
;{{flag|Germany|Nazi}}: Luftwaffe – 12 aircraft taken over from the Czechoslovak Air Force
;{{ROM}}: Royal Romanian Air Force – one machine, Ba-122.40, YR-DPO
;{{SVK}}: Slovak Air Force (1939–1945)
;{{USSR}}: Soviet Air Force – 15 Ba.122 aircraft
Specifications (Ba.122)
File:Avia_B.122_3-view_L'Aerophile_April_1937.jpg
Data from Němeček, Václav – Československá letadla
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|cruise speed mph=143
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|ceiling m=7000
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See also
References
{{commons category|Avia Ba-122}}
{{reflist|refs=
{{cite book |title= Československá letadla |last=Němeček |first=Václav |year=1968|location= Prague}}
}}
{{Avia aircraft}}
Category:Single-engined tractor aircraft
Category:1930s Czechoslovak military trainer aircraft