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 aluminum 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.
| Max Speed
(km/h at 5,000 m)
| Max altitude
| Turn time
| Rate of climb
| Max Speed
(km/h at 5,000 m)
|Max altitude (meters)||Turn time (seconds)|| Rate of climb
|Take-off run (meters)|
|Combat flap||Take-off flap||Landing flap||Air brakes||Arrestor gear|
| Wing-break speed
| Gear limit
| Combat flap
|Max Static G|
|< 380||< 420||< 490||> 270|
|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.
The Yak-9U is armed with:
- 2 x 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 the battles
Manual Engine Control
|Controllable||Not controllable||Not controllable||Not controllable||Separate||Not ontrollable||Not controllable|
|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 an article about the vehicle and adding a block "/ historical reference" (example: https://wiki.warthunder.com/Name-vehicles/historical reference) and add a link to it here using the
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An excellent addition to the article will be video guides, as well as screenshots from the game and photos.
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;
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Paste links to sources and external resources, such as:
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|I-15||I-15 WR · I-15 M-22 · I-15R · I-15bis|
|I-153||I-153 M-62 · Zhukovsky's I-153-M62 · I-153P|
|I-16||I-16 type 5 · I-16 type 10 · I-16 type 18 · I-16 type 24 · I-16 type 27 · I-16 type 28 · I-180S|
|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-3U · 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 · ▂P-47D-27 · ▂Hurricane Mk IIB · ▂Fw 190 D-9 · ▂Spitfire Mk IXc|
|P-39||▂P-39K-1 · ▂Pokryshkin's P-39N-0 · ▂P-39Q-15|
|P-63||▂P-63A-5 · ▂P-63A-10 · ▂P-63C-5|