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Yak-4/BB-22bis

Short- range Bomber

Yakovlev

Yak-4/BB-22bis

The Yakovlev Yak-4 (BB-22 bis) was a Soviet bomber aircraft, a development of the Yak-2. The Yak-4 used more powerful Klimov M-105 V-12 engines than its predecessors.

BB-22, Yak-2, Yak-4
BB-22
prototype
BB-22
serial
Yak-2
serial
Як-2
serial
BB-22bis
prototype
Yak-4
serial
No - 1012 1041 70204 1002 70603
Factory of origin # 115 # 1 # 1 # 81 # 1 # 81
The ending of tests 2.1940 3.1940 9.1940 10.1940 6.1940 12.1940
Crew Two
Dimensions
Length, m 10.17 (33 ft 5 in)
Wing span, m 14.00 (45 ft 11 in)
Wing area 29.40 m²(316 ft²)
Powerplant
Engine 2 x M-103 2 x M-103 2 x M-103 2 x M-103 2 x M-105 2 x M-105
Power, hp 2 x 960 2 x 960 2 x 960 2 x 960 2 x 1050 2 x 1050
Weight
Load weight, kg 5315 5380 5660 5630 5845 6200
Performance
Maximum speed, km/h at sea level 449 439 399 410 460 450
at altitude 535 515 478 498 574 533
altitude, m 5,000 5,000 4,600 4,800 4,800 4,900
Time to level 5000 m, min 7.4 7.7 9.5 8.0 5.45 8.0
Service ceiling, m 8,900 8,900 8,100 8,700 10,100 9,000

References

  • "The history of designs of planes in USSR 1938-1950" /Vadim Shavrov/
  • "Planes of Stalin falcons" /Konstantin Kosminkov and Dmitriy Grinyuk/
  • "Stories of the aircraft designer" /Alexander Yakovlev/
  • "The Soviet planes" /Alexander Yakovlev/

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