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General characteristics
1 personCrew
2.6 tEmpty weight
3.2 tTake-off weight
Flight characteristics
10 500 mCeiling
sec19.8/19.8/19.2Turn Time
160 km/hStalling speed
Klimov M-107AEngine
waterCooling system
Speed of destruction
720 km/hStructural
320 km/hGear
Offensive armament
20 mm ShVAK cannonWeapon 1
120 roundsAmmunition
800 shots/minFire rate
2 х 12.7 mm Berezin UB machine gunWeapon 2
340 roundsAmmunition
798 shots/minFire rate
70 000 Rp icon.pngResearch
230 000 Sl icon.pngPurchase
Sl icon.png6 208 / 9 492/10 125 / 15 481/2 640 / 4 036Repair
65 000 Sl icon.pngCrew training
230 000 Sl icon.pngExperts
820 Ge icon.pngAces
x 1.60 Rp icon.pngReward for battle
This page is about the Russian fighter Yak-9U. For other uses, see Yak-9 (Family).


GarageImage Yak-9U.jpg

The Yak-9U is a rank IV Soviet fighter with a battle rating of 4.0 (AB), 4.3 (RB), and 5.0 (SB). It was introduced in Update 1.37.

The Yak-9 was a Soviet single-engine fighter of the WWII era. It was the first combat aircraft designed by Alexander Yakovlev's construction bureau. The most mass-produced Soviet fighter of the war, it remained in production from October 1942 to December 1948, with a total of 16,769 built.

The Yak-9 was a further modification of the Yak-1 and Yak-7B. In its core design, it was a redesign of the Yak-7. With few external differences, Yak-9 was at the same time much more advanced internally. This is not unexpected, as almost two years of design and combat experience of the Yak series went into the Yak-9. Also, at the time aluminium was in much greater supply than it had been two years previously at the start of the war. Amongst other things, the use of metal allowed the plane’s weight to be significantly reduced, meaning that more fuel could be stored and that the aircraft could be equipped with more powerful armament and more specialized equipment.

The Yak-9U is a redesign of the Yak-9. The Yak-9U entered in service in 1943, less than an year before the Yak-3 (even if the Yak-3 in before the Yak-9U in the Tech Tree) and has the same armament (2 x Berezin UB (12.7 mm) 12.7mm with 170 rounds per gun and 1 x ShVAK (20 mm) with 120 shells). The Yak-9U is faster and more resistant, but also heavier.

The Yak-9U is an up-engined Yak-9 equipped with the M-107A engine. It sports competitive speed, far above average turning and roll abilities, good acceleration, a high dive limit (by USSR standards), and keeps nice and crisp controls from speeds as low as 250 km/h to 750 km/h. At 4.3 BR, it is arguably the most underestimated vehicle rank-for-rank in the game and is often skipped by players who view it as just another Yak-9.

Unlike previous Yak-9s equipped with the VK-105PF engine, the Yak-9U gets a significant upgrade in the form of its M-107A engine (which also happens to be the engine utilized by the premium Yak-3 (VK-107) and the later Yak-9P/UT). As such, the Yak-9U is one of the fastest planes at sea level at 4.3 and retains excellent performance up to ~6 km where it can effectively engage higher-speed and faster climbing American and German planes, respectively. This, combined with the excellent handling and turn-fighting qualities allow the Yak-9U to effectively dictate any engagement- a pilot can turn-fight Bf 109s and P-47s with ease while having the capability to outrun slower yet more maneuverable vehicles such as the Spitfire.

At sea level, the Yak-9U can catch most, if not all, planes at 4.3 BR, including the P-47 and P-51D. Beware, however, as the Yak airframe isn't particularly durable in a dive and will rip at speeds above 750 kph IAS (indicated airspeed). Thankfully, forcing an opponent down low effectively seals their fate as you and your team perform optimally at low altitude.

General info

Flight Performance

Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.

Max Speed
(km/h at 5,000 m)
Max altitude
Turn time
Rate of climb
Take-off run
651 632 10,500 20.3 20.6 12.5 14.9 380
Max Speed
(km/h at 5,000 m)
Max altitude
Turn time
Rate of climb
Take-off run
673  ? 10,500 19.1  ??.? 17.3  ?.? 380


Combat flap Take-off flap Landing flap Air brakes Arrestor gear
Wing-break speed
Gear limit
Combat flap
Max Static G
+ -
720 420 310 ~19 ~14
Optimal velocities
< 380 < 420 < 490 > 270
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
2,000 m 1,600 hp 1,680 hp

Survivability and armour

  • 64 mm Bulletproof glass in cockpit front and rear.
  • 8 mm Steel plate behind the pilot.


Offensive armament

The Yak-9U is armed with:

  • 20 mm ShVAK cannon, nose-mounted (120 rpg)
  • 2 x 12.7 mm Berezin UB machine gun, nose-mounted (170 rpg = 340 total)

Usage in battles

Describe the tactics of playing in an aircraft, the features of using vehicles in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Controllable Not controllable Not controllable Not controllable Separate Not controllable Not controllable


Tier Flight performance Survivability Weaponry
I Fuselage Repair Radiator Offensive 12 mm
II Compressor Airframe New 12 mm MGs
III Wings Repair Engine Offensive 20 mm
IV 100 Octane Fuel Usage Engine Injection Cover New 20 mm Cannons

Pros and cons


  • One of the fastest Russian prop-planes
  • MEC negates overheating, set radiator to 100%/75% at low/high altitudes respectively
  • Excellent cockpit visibility (for SB battles)
  • Excellent handling and maneuverability at most speed bands
  • Good rate of turn
  • Good rate of climb
  • Performs identically to the 5.0/5.7 (RB) Yak-9P and Yak-9UT while being at 4.3 BR
  • Nose-mounted weaponry


  • Relatively low ammo count
  • Does not excel in any specific occupation
  • Average dive performance
  • Rips easily in a dive
  • Overheating is a very real issue, do not abuse the throttle
  • Often skipped in the tech tree by players, heavily underrated


Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === Encyclopedia Info ===, also if applicable).


Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the aircraft;
  • links to approximate analogues of other nations and research trees.

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the aircraft;
  • other literature.

USSR fighters
I-15  I-15 WR · I-15 M-22 · I-15R · I-15bis
I-153  I-153 M-62 Chaika · Zhukovsky's I-153-M62 · I-153P Chaika
I-16  I-16 type 5 Ishak · I-16 type 10 Ishak · I-16 type 18 Ishak · I-16 type 24 Ishak · I-16 type 27 Ishak · I-16 type 28 Ishak
I-185  I-185 (M-71) · I-185 (M-82)
MiG-3  MiG-3-15 · MiG-3-15 (BK) · MiG-3-34
LaGG  I-301 · LaGG-3-4 · LaGG-3-8 · LaGG-3-11 · LaGG-3-23 · LaGG-3-34 · LaGG-3-35 · LaGG-3-66
La  La-5 · La-5F · La-5FN · La-7 · Dolgushin's La-7 · La-7B-20 · La-9 · La-11
Yak-1/7  Yak-1 · Yak-1B · Yak-7B
Yak-3  Yak-3 · Yak-3P · Yak-3T · Yak-3 (VK-107)
Yak-9  Yak-9 · Yak-9B · Golovachev's Yak-9M · Yak-9T · Yak-9K · Yak-9U · Yak-9UT · Yak-9P
Other countries  ▂P-40E-1 Kittyhawk · ▂P-47D-27 Thunderbolt · ▂Hurricane Mk IIB · ▂Fw 190 D-9 · ▂Spitfire Mk IXc
P-39  ▂P-39K-1 Airacobra · ▂Pokryshkin's P-39N-0 Airacobra · ▂P-39Q-15 Airacobra
P-63  ▂P-63A-5 Kingcobra · ▂P-63A-10 Kingcobra · ▂P-63C-5 Kingcobra