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Yak-2/Yak-4/BB-22


Blaser93
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The Yak-2, Yak-4 and BB-22 were short range bombers/reconnaissance. The Yak-2 and BB-22 were equipped with 2x Klimov M-103 V-12 engines while the Yak-4 was equipped with the better Klimov M-105 V-12 engines. They were armed with 2x 7.65 ShKAS machine guns and could carry up to 600 kg (1,300 lb) of bombs.

 

The Yak-2 was initially known as the Ya-22 in the Yakolev OKB numbering sequence before being renamed to the Yak-2 in 1941. It was built out of wood for the wings and centre fuselage, duralumin for the forward fuselage and steel tube framing in the rear fuselage and a wooden upper decking and fabric skin. The cockpit was seated at the tip of the nose however the gunner/navigator were in a compartment behind the trailing edge of the wing. The prototype was unarmed and no bomb shackles. It lacked a radio and navigational equipment but was able to become the fastest multi engine soviet aircraft by reaching 567 km/h (352 mph) at 9000m (32,500 ft).

 

Stalin rather precipitously ordered it into production as the BB-22. Factory No.1 produced the first pre production BB-22 in December 1939 but only made its first flight in February. It was submitted for service evaluation in March - April 1940 but was deemed a disappointment. The gross weight had increased to 357kg (787 lb) despite the fuel reduction from 1000 kg (2,200 lb) to 600 kg (1,300 lb) and the maximum speed had declined to 515 km/h (320 mph) at 5000m (16,000 ft). The engine cooling proved to still be unsatisfactory and the undercarriage was too weak. Longitudinal and lateral stability was also deemed unsatisfactory making it only suitable for well trained pilots. The test was concluded that it was not combat capable and reliable as well as dangerous to the crew for flights with 400 kg (880 lb) or more of bombs.

 

A remediation program began with replacing the single wheel main landing gear with a two wheeled unit and the fuselage upper deck was cut down. Around the same time factory No.1 ceased production and the project was given to factory No. 81 in Moscow to continue the work. The aircraft built there were of better quality because the surface finish was better and the engine cowling and doors were more closely fitted to reduce drag. These improvements helped to increase the speed by 10-20 km/h (6.2-12.4 mph). Development worked continued and resulted in the creation of the Yak-4 with the Kimov M-105 V-12 Engines.  201 Yak-2s and Yak-4s were built before production ceased in April 1941.

 

I would like to see these forgotten aircraft added probably as mid-late tier 1 or early tier 2.

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  • Senior Suggestion Moderator

Open for discussion. :Salute:

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The more the merrier.

 

+1

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  • 2 years later...
  • Senior Suggestion Moderator

Thread moved to Implemented suggestions as this vehicle was added in update 1.75 "La Resistance".

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