Yakovlev Yak-4
| Yak-4 | |
|---|---|
| |
| Role | Light bomber |
| Manufacturer | Yakovlev |
| Designer | Alexander Sergeyevich Yakovlev |
| First flight | 20 February 1940 |
| Introduction | 1941 |
| Retired | 1945 |
| Primary user | VVS |
| Number built | 90 |
| Developed from | Yakovlev Yak-2 |
The Yakovlev Yak-4 (Service names Yak-4, BB-22bis (Blizhnij Bombardirivschik, "short-range bomber")) was a Soviet light bomber used during World War II. It was developed from the Ya-22/Yak-2.
Design and development
The Yak-4 was an improved version of the Yak-2 with more powerful Klimov M-105 engines and a number of other changes that were made to try to rectify the problems of the Yak-2. Two additional fuel tanks were added in the outer wings to bring the total capacity up to 180 litres (40 imp gal; 48 US gal) and the gunner's canopy was bulged to give him more room to use his 7.62 mm (0.300 in) ShKAS machine gun. The upper fuselage was redesigned to improve the gunner's field of fire and the oil coolers were relocated from the sides of the engine nacelles to the 'chin' position to improve their performance.
Operators
Specifications (Yak-4)
Data from Gunston, The Osprey Encyclopaedia of Russian Aircraft 1875–1995
General characteristics
- Crew: two
Performance
Armament
- 2 × 7.62 mm ShKAS machine guns
- up to 600 kg (1,300 lb) of bombs
References
Notes
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (March 2016) |
Bibliography
- Gordon, Yefim. Soviet Airpower in World War 2. Hinckley, England: Midland Publishing, 2008 ISBN 978-1-85780-304-4
- Gunston, Bill. The Osprey Encyclopaedia of Russian Aircraft 1875–1995. London, Osprey, 1995 ISBN 1-85532-405-9
External links
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