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Yak-7

Fighter

Yakovlev

Yakovlev Yak-7

When in 1939 was issued Yak-1, designers, having taken it for the basis, have developed double trainer fighter UTI-26. It has left on tests after I-26 and has soon been adopted to series production under mark Yak-7UTI. It is necessary to tell, that it was a unique double fighter of new generation.

The Yak-7UTI, as well as its subsequent version Yak-7B, during war have played an exclusive role for pilots preparation.

Yak-7UTI has served as the prototype and for single-seat fighter Yak-7. Single-seat fighting and double training versions Yak-7 had few structural differences and their manufacture has been unified, that during war had very big value.

As well as the Yak-1, fighter Yak-7 became one of the main airplanes of Soviet aviation in first half of war.

Total of 6399 Yak-7 in various versions was built within 1941-1944.

WW 2 Beginning Soviet Fighters
Yak-1 Yak-1 Yak-7B MiG-3 LaGG-3 LaGG-3
Year of issue 1941 1943 1943 1941 1941 1943
Dimensions
Length, m 8.48 8.48 8.48 8.25 8.81 8.81
Wing span, m 10.0 10.0 10.0 10.2 9.81 9.81
Wing area, m² 17.15 17.15 17.15 17.44 17.62 17.62
Weight, kg:
Maximum takeoff weight 2858 2884 3005 3300 3280 2990
Powerplant
Engine M-105P M-105PF M-105PF AM-35A M-105P M-105PF
Power, h.p. 1100 1210 1210 1350 1100 1210
Performance
Maximum speed, km/h at sea level 480 501 531 472 474 542
at altitude 577 592 588 622 549 591
m 4950 4100 3860 7800 5000 3560
Time to 5000 m, min 9.2 6.2 6.6 5.7 7.4 5.8
Service Ceiling, m 10000 12500 10200 11500 9300 9500
Service Range*, km 700 625 600 630 700 650
Armament
Number Cannon 1 1 1 - 1 1
Machine guns 2 1 2 3 3 1

* Forcing of the engine during 10 minutes.

** On speed making 90 % from maximal.

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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