General Information | ||
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Type | Yak-7A (skis) | Yak-7A (wheels) |
Function | Fighter | |
Year | 1942 | |
Crew | 1 | |
Powerplant | ||
Type | M-105PA | |
Takeoff Power | 1100hp | |
Power at 0m | 1020hp | |
Power at ****m | 1100hp | |
Size | ||
Length | 8.5m | |
Wingspan | 10.0m | |
Wing area | 17.15m2 | |
Weights and loads | ||
Empty (kg) | 2523 | 2450 |
Loaded (kg) | 3008 | 2935 |
Wing Load (kg/m2) | 175 | 171 |
Power load (kg/hp) | 2.95 | 2.88 |
Speed (km/h) | ||
at 0m | 451 | 495 |
at 5000m | 555 | 571 |
Landing | 145 | 142 |
Maneuverability | ||
Turn time | 22sec | 21sec |
Roll | ||
Takeoff | 460m | 410m |
Landing | 455m | 610m |
Range | ||
Practical | 590km | 643km |
Ceiling | ||
Ceiling | 9250m | 9500m |
Climb | ||
5000m | 6.8min | 6.4min |
Payload | ||
Fuel | 305kg | |
Armament | ||
Gun Type | 20mm ShVAK | |
Position | Through the hub | |
Ammo | 120 | |
Gun Type | 2*7.62mm ShKAS | |
Position | Engine | |
Ammo | 2*750 | |
Salvo | 1.73 kg/sec | |
Rockets | 6*RS-82 |
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At the end of 1941 production Yak-7 of the factory N°153 underwent serious design revision following reports from the service units and (part of) TsAGI recommendations.
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Armament of the Yak-7A was identical to that of Yak-1 and early Yak-7, except some improvements in the gun installation.
First production batches of Yak-7A suffered from same quality problems as Yak-7 M-105PA. Soon production process came to a steady run, and quality problems were solved. New aircraft was some 20km/h faster than the predecessor, despite had same engine and added antenna mast.
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During winter season 1942 Yak-7A was built on retractable main skis. Added 73kg of weight and increased drag harmed aircraft flight performance (as well as a washable white camouflage), but service and operation advantages payed back. Handling of Yak-7A was not degraded by skis, and landing became much easier.
Joined factory and State trials of the series Yak-7 N°14-11 (modified to the Yak-7A standadt)were carried out in February 16 to 22, 1942, at the Factory N°153 test grounds. Aircraft was flown before and after modifications, on wheels and skis. Flight tests, weapon firing and special skis evaluation were fulfilled: 318 flights (288 for the ski evaluation alone), 24h4min in the air.
In January-February 1942 13 Yak-7A were built, in March-May - 264. Despite Yak-7A was still an intermediate design, it proved to be a step forward. 434thIAP under command of I.I.Kleschiov destroyed 90 enemy aircraft in June-August 1942 (Stalingrad Front). Yak-7A could sustain severe combat damage. Pilots managed to bring it back with one aileron lost, with half of rear fuselage and rudder stripped of fabric skin, half of stabilizer and part of tailfin is gone etc.
In June 1942 Yak-7A underwent another major redesign. More TsAGI airdynamic recommendations were implemented, aircraft received new armament - and became Yak-7B.
Predecessors | Modifications (Experimental) | Modifications (Production) | |
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![]() Yak-7 M-105PA |
Yak-7 M-82A | Yak-7R 2xDM-4, D-1A |
![]() Yak-7B M-105PA |
References | |
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Created January 11, 2001 | ![]() |
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