Yakovlev Yak-4
| Industry | Aerospace, Defense |
|---|---|
| Founded | 1934 |
| Headquarters | Moscow , Soviet Union |
| Products | Aircraft, including the Yak-4 light bomber |
The Yakovlev Yak-4—also known under the service designations Yak-4 and BB-22bis (from the Russian Blizhnij Bombardirovschik, meaning "short-range bomber")—was a Soviet light bomber deployed throughout World War II. Its design was an advancement based on the earlier Ya-22/Yak-2 model.
Design and development
The Yak-4 represented a refined iteration of the Yak-2, featuring enhanced Klimov M-105 engines alongside several modifications aimed at addressing the Yak-2’s shortcomings. To increase fuel capacity, two additional tanks were installed in the outer wing sections, raising total fuel storage to 180 litres (40 imp gal; 48 US gal). The gunner’s canopy was redesigned with a bulged profile to provide increased space for operating the 7.62 mm (0.300 in) ShKAS machine gun. Additionally, the upper fuselage underwent alterations to broaden the gunner’s firing range, while the oil coolers were repositioned from the sides of the engine nacelles to a 'chin' mounting beneath the engines to enhance cooling efficiency.
Operators
Specifications (Yak-4)
References
Additional reading
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External links
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