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Yakovlev Yak-9 (Frank) Fighter-Bomber (1943)

Authored By Staff Writer | Last Updated: 1/5/2010

The Yak-9 was developed from an experimental version of the Yak-7 fighter series.

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In line with other classic wartime fighters of World War 2, the Yakovlev-produced Yak-9 was another excellent piston-engine addition to the family line. Initially conceived from a developmental version of the Yak-7 that featured a combined construction of wood and metal, the Yak-9 was designed about the same time that the Yak-3 aircraft was being drawn up. In the end, the Yak-9 would prove to be a most important Soviet aircraft with the production numbers and variants/subvariants to prove just that.

The Yak-9 was designed by Alexander Sergeevich Yakovlev (Yakovlev OKB) around the powerful series of Klimov engines that would be the nucleus of later Yak-9's in the lineage. The combination 20mm cannon and one (or two) 12.7mm heavy machine guns made it a most powerful adversary with enough offensive punch to counter most anything in the sky. Visibility was solid throughout and the airframe proved to be robust and adaptable to an extent. The airframe was converted into a night fighter version as well as several long-range and "pure" interceptor models while including anti-tank and bomber escort derivatives. The new construction method made for a lighter plane than the Yak-7 and the combat experiences garnered by Soviet pilots in the Yak-7 played a role in the development of the Yak-9. The aircraft entered service in October of 1942 with production running from 1942 to 1946.

Design was conventional with the engine mounted in front of the cockpit, low-monoplane wings with dihedral and a "tail-dragger" style undercarriage. The wings were tapers at both the leading and trailing edges and ended as clipped wing tips sporting some curvature. The engine sat in a forward compartment and powered a three-bladed propeller system. The cockpit was situated just aft of the compartment at about amidships in the airframe and featured a framed canopy with good vision all-around, even to the rear. The fuselage was a streamlined affair and quite clean overall, ending in a conventional empennage capped by a rounded vertical tail fin and sporting applicable horizontal tail surfaces. The main landing gear legs were single-wheeled and held under each wing, retracting towards fuselage centerline. The tail wheel was also single-wheeled and retracted into its own bay under the tail assembly. Standard armament was generally a single 20mm ShVAK cannon with 120 rounds and a 12.7mm UBS heavy machine gun with 200 rounds. This could vary by production variant however.

The Yak-9D model, in particular, was fitted with a Klimov M-105 PF series V-12 liquid-cooled engine developing 1,180 horsepower. Maximum speed was listed at 367 miles per hour while range was an impressive 845 miles. Service ceiling was capped at approximately 30,000 feet while rate-of-climb was measured at about 2,690 feet per minute. Armament was the standard 1 x 20mm cannon with 1 x 12.7mm machine gun.

Comparatively, the Yak-9U was fitted with the Klimov VK-107A V-23 liquid-cooled engine developing 1,500 horsepower. Her maximum speed was 417 miles per hour with a range of just 420 miles. Service ceiling was limited to 35,000 feet with a rate-of-climb equaling 3,280 feet per minute. Armament was 1 x 20mm ShVAK cannon with 120 rounds of ammunition as well as 2 x 12.7mm UBS machine guns with 170 rounds to a gun.

The aircraft's baptism of fire came in the Battle of Stalingrad. Actions would also include it in Smolensk and wherever else it was needed. The Soviets compared the mount favorably to the highly-touted German Focke-Wulf 190 (models A-3 and A-4) and Messerschmitt Bf 109G fighter series. A Yak-9 was credited with the downing of a Messerschmitt Me 262 jet-powered fighter in March of 1945. Several Yak-9s also made up a Free France fighter squadron beginning in 1943.

With the evolution of the Yak-9 system, the Soviet cause against Germany was improved substantially. The Yak-9 would go on to become one of the premiere Soviet production fighters of the entire war and would essentially have the development of the preceding Yak-7 series to thank for it - becoming the most-produced fighter of the entire Yakovlev fighter line (16,769 examples).

The Yak-9 was known in NATO nomenclature under the codename of "Frank". Despite production having wrapped up, the Yak 9 would still be made available in number for the North Koreans in the Korean War. The post-war environment saw the Soviet Union ship many Yak-9s to allied air fleets abroad in this fashion (most likely Yak-9P models). Text ©2003-2013 www.MilitaryFactory.com • All Rights Reserved • No Reproduction Permitted
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Picture of Yakovlev Yak-9 (Frank)
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Specifications for the
Yakovlev Yak-9 (Frank)
Fighter-Bomber


Country of Origin: Soviet Union
Manufacturer: Yakovlev OKB - Soviet Union
Initial Year of Service: 1943
Production: 16,769


Focus Model: Yakovlev Yak-9U (Frank)
Crew: 1


Length: 28.05ft (8.55m)
Width: 32.05ft (9.77m)
Height: 9.71ft (2.96m)
Weight (Empty): 5,988lbs (2,716kg)
Weight (MTOW): 6,830lbs (3,098kg)


Powerplant: 1 x Klimov VK-107A inline piston engine generating 1,650hp.


Maximum Speed: 434mph (698kmh; 377kts)
Maximum Range: 541miles (870km)
Service Ceiling: 39,042ft (11,900m; 7.4miles)
Rate-of-Climb: 4,920 feet per minute (1,500m/min)


Hardpoints: 2
Armament Suite:
STANDARD:
1 x 20mm ShVAK cannon firing through propeller hub.
1 x 12.7mm UBS machine gun

OPTIONAL (Model Dependent):
2 x 220lb bombs
4 x 50kg FAB-50 bombs
2 x 12.7mm UBS machine gun in place of 1 x 12.7mm fitting.
1 x 23mm VYa cannon
1 x 23mm NS-23 cannon
1 x 37mm NS-37 cannon
1 x 45mm NS-45 cannon
2 x 20mm Berezin B-20 cannons


Variants:
Yak-7DI - Initial Development Model Designation based on the Yak-7 production fighter.

Yak-9 - Base Production Model Designation; fitted with 1,300hp Klimov VK-105PF-1 OR 1,360hp VK-105PF-3 powerplants; 1 or 2 12.7mm machine guns with 1 x 20mm cannon.
Yak-9B - High-Speed Fighter-Bomber Variant; featured capability to carry an internal and external combined bomb load of up to 1,323lbs.
Yak-9D - Long-Range Variant; fitted with VK-105PF-3 engine; increased fuel capacity.
Yak-9DD - Extreme Long-Range Model fitted with drop tanks; based on Yak-9D model.
Yak-9K - Anti-Tank Version with 45mm cannon; "heavy" model.
Yak-9M - Revised armament; cockpit position slightly moved.
Yak-9MPVO - Night-fighter Model; Klimov VK-105 PF2 engine of 1,240 horsepower; RPK-10 radio compass; searchlight.
Yak-9P - Interceptor produced in post-war years; based on Yak-9U; all-metal wing assemblies; fitted with Klimov 107A inline piston engine generating 1,650hp; 2 x 20mm ShVAK cannons.
Yak-9PD - High-Altitude Interceptor; fitted with Klimov M-105 PD engine to counter Junkers Ju 86R reconnaissance aircraft of the German Luftwaffe; later upgraded to water-injected Klimov M-106 PV engine.
Yak-9R - Reconnaissance Variant
Yak-9S - Based on Yak-9M; fitted with Klimov VK-105 PF engine; 1 x 23mm Nudelman-Suranov NS-23 cannon and 2 x 20mm Berezin B-20 cannons; new propeller system; never produced.
Yak-9T - Anti-Tank Model; fitted with 37mm or 45mm cannons.
Yak-9TD - Fitted with NS-37 cannon; 4 x 110lb FAB-50 bomb compatibility.
Yak-9TK - 20mm, 23mm, 37mm or 45mm cannon compatible; never produced.
Yak-9U - Fitted with Klimov VK-107A engine of 1,650 horsepower; 1 x 20mm ShVAK cannon; improvements throughout.
Yak-9UV - Proposed two-seat trainer; never produced; 1 x 20mm Berezin B-20 cannon.
Yak-9UT - Fitted with 1 x 37mm Nudelman N-37 cannon and 2 x 20mm Berezin B-20 cannons; production aircraft replaced N-37 with NS-23.
Yak-9V - Two-Seat Trainer; fitted with Klimov VK-105 PF2 engine; 1 x 20mm ShVAK cannon; based on Yak-9M and Yak-9T models.


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