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Yak-9D

Long range Fighter

Yakovlev

The Yak-9D flown by Number One Yak Ace - A.V. Vorozheikin.

The Yak-9D flown by Number One Yak Ace - A.V. Vorozheikin. The canopy was removed to pilot requirement. The fighters was damaged by ground fire and made forced landing on 28 February 1944.

The Yak-9D still needed to increase flight range. The version created on the basis of the Yak-9D, the Yak-9T, had its cockpit moved 400mm rear wards and featured eight wing fuel tanks and one fuselage tank with total volume of 845I. Six wing tanks (excepting the outer ones) were protected. Maximum takeoff weight was 3387 kg, thus resulting in a worse performance than that of the earlier Yak-9D(T).

But the Yak-9DD could boast a maximum range of 2285 km and normal one of 1325 km. Furthermore the aircraft incorporated modern radio navigation equipment. A total of 339 Yak-9DDs was built from May 1944 to September 1945.

Yak-9 Modifications
Yak-9 Yak-9T Yak-9D Yak-9P Yak-9M Yak-9U Yak-9P
Year of issue 1942 1943 1943 1944 1944 1944 1947
Dimensions
Length, m 8.5 8.66 8.5 8.5 8.5 8.55 8.55
Wing span, m 9.74 9.74 9.74 9.74 9.74 9.74 9.74
Wing area, m² 17.15 17.15 17.15 17.15 17.15 17.15 17.15
Wing loading, kg/mm² 167 176 182 196 181 187 207
Weight, kg:
Empty weight 2277 2298 2350 2382 2428 2512 2708
Maximum takeoff weight 2873 3025 3117 3356 3096 3204 3550
Powerplant
Engine M-105PF M-105PF M-105PF VK-105PF VK-105PF VK-107A VK-107A
Power, hp 1180 1180 1180 1180 1180 1500 1500
Power loading, kg/hp 2.43 2.56 2.64 2.84 2.62 2.14 2.37
Performance
Maximum speed, km/h at sea level 520 533 535 507 518 575 590
at altitude 599 597 591 562 573 572 550
m 4300 3250 3650 3750 3750 5000 5000
Time to 5000 m, min 5.1 5.5 6.1 6.5 6.1 5.0 5.8
Time of turn, sec 15-17 18-19 20 25-26 19-20 20 21
Service ceiling, m 11100 10000 9100 8600 9500 10650 10500
Service range, km 875 735 1360 880 950 675 1130
Armament
Cannon, 20-mm 1 1 1 1 1 1 5
Machine guns, 12.7-mm 1 1 1 1 1 2 -

References

  • "Yak-9: Private soldiers of heavens" /Dmitriy Leipnik/
  • "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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