Yak-9U

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Rank VI USSR | Premium | Golden Eagles
Su-25K Pack
Yak-9U
yak-9u.png
Yak-9U
AB RB SB
4.3 4.7 5.0
Class:
Research:17 000 Specs-Card-Exp.png
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This page is about the Russian fighter Yak-9U. For other versions, see Yak-9 (Family).

Description

GarageImage Yak-9U.jpg


The Yak-9U is a rank III Russian fighter with a battle rating of 4.3 (AB), 4.7 (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 specialised equipment.

The Yak-9U is a redesign of the Yak-9. The Yak-9U entered into service in 1943, less than an year before the Yak-3 (even though the Yak-3 is before the Yak-9U in the Tech Tree) and has the same armament (2 x Berezin UB 12.7 mm with 170 rounds per gun and 1 x ShVAK cannon with 120 shells). The Yak-9U is faster and more resilient, 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. 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 American and faster climbing German planes. 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 manoeuvrable 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. Thankfully, forcing an opponent down low effectively seals their fate as you and your team perform optimally at low altitude.

General info

Flight performance

Characteristics
Stock
Max Speed
(km/h at 5,000 m)
Max altitude
(meters)
Turn time
(seconds)
Rate of climb
(meters/second)
Take-off run
(meters)
AB RB AB RB AB RB
652 634 10500 20.1 20.7 14.9 14.9 380
Upgraded
Max Speed
(km/h at 5,000 m)
Max altitude
(meters)
Turn time
(seconds)
Rate of climb
(meters/second)
Take-off run
(meters)
AB RB AB RB AB RB
699 677 10500 18.6 19.1 22.9 18.8 380

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
X X X X
Limits
Wing-break speed
(km/h)
Gear limit
(km/h)
Combat flaps
(km/h)
Max Static G
+ -
0 320 410 ~11 ~8
Optimal velocities
Ailerons
(km/h)
Rudder
(km/h)
Elevators
(km/h)
Radiator
(km/h)
< 400 < 420 < 490 > 450
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
1,890 m 1,650 hp 1,749 hp
Setting 2
Optimal altitude 100% Engine power WEP Engine power
4,500 m 1,500 hp 1,590 hp

Survivability and armour

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

Armaments

Offensive armament

The Yak-9U is armed with:

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

Usage in battles

Describe the tactics of playing in an aircraft, the features of using aircraft 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 Controllable
Not auto controlled
Controllable
Not auto controlled
Controllable
Auto control available
Separate Controllable
2 gears
Not controllable

Modules

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

Pros:

  • 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 manoeuvrability 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

Cons:

  • 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

History

Historical design and development

During December 1943, the creation of a new airframe (Yak-9U) allowed the installation of the M-107A engine, which was more powerful than the previous VK-105PF. The engine mount was brand new and included individual faired exhaust pipes, wings, and fuselage structure that was made of metal while the whole aircraft received a covering of Bakelite skin. The horizontal tail surfaces were slightly reduced in order to afford the aircraft improved pitch control. The oil cooler intake was re-positioned from beneath the nose to the port wing root as well as an enlarged radiator bath being moved further aft under the fuselage. A supercharger intake was centred on the top decking of the engine cowling. The rear antenna cable was moved inside a lengthened rear canopy which featured a more aerodynamically refined shape with a modified fuselage deck contour. The The typical armament of the Yak-9U was a 20mm (79 cal) ShVAK cannon with 120 rounds that was fired through the aircraft's hollow propeller shaft, and two 12.7mm (50 cal) Berezin UB machine guns with 340 rounds.

Yakolev Yak-9U Frank

January to April 1944 marked the commencement of State trials and revealed that the Yak-9U had a superior top-speed compared to all fighters in service on the Eastern front at 6,000 m (19,685 ft). Unlike the I-185 the Yak-9U was a much simpler to fly and stable aircraft. Ultimately the M-107A engine inherited all the problems of the VK-105PF engine. The engine was prone to overheating, oil leaks, loss of engine pressure during climbs, spark plugs constantly burning out, and intense vibrations which would fatigue assembly bolts leading to a short engine life. These defects forced the first production batches starting during April 1944 to be powered by the reliable M-105 PF-3 engine. Further changes would include the fuel capacity of the Yak-9U being upgraded to 400L (106 US gal) and in order to re-balance the aircraft, the wings where moved 9.906 centimeters (3.9in) forward and the aircraft's VlSh-107LO propeller being replaced with the older VISH-105S. A total production of 1,134 aircraft where constructed by December 1944.

The model in-game does not sport the production batch's modifications as it is the prototype trial model.

In-game description

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-7. 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.

Media

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.


A.S. Yakovlev Design Bureau (Яковлев Опытное конструкторское бюро)
Fighters 
Yak-1  Yak-1 · Yak-1B
Yak-3  Yak-3 · Yak-3 (VK-107) · Yak-3P · Yak-3T · Yak-3U
Yak-7  Yak-7B
Yak-9  Yak-9 · Yak-9B · Yak-9K · Golovachev's Yak-9M · Yak-9P · Yak-9T · Yak-9U · Yak-9UT
Twin-engine fighters  I-29
Jet fighters 
Yak-15  Yak-15P · Yak-15
Yak-17  Yak-17
Yak-23  Yak-23
Yak-30  Yak-30D
Yak-141  Yak-141
Strike aircraft 
Yak-2  Yak-2 KABB
Yak-38  Yak-38 · Yak-38M
Bombers  Yak-4
Jet bombers  Yak-28B
Foreign use  ▄Yak-3 · Challe's ▄Yak-9T · ◔Yak-9P
Captured  ▀Yak-1B

USSR fighters
I-15  I-15 WR · I-15 M-22 · I-15 M-25 · I-15bis · Krasnolutsky's I-15bis
  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-29  I-29
I-185  I-185 (M-71) · I-185 (M-82)
I-225  I-225
ITP  ITP (M-1)
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