Ki-84 hei

From War Thunder Wiki
Jump to: navigation, search
Hunter FGA.9 PACK
Ki-84 hei Hayate
General characteristics
1 personCrew
3.8 tTake-off weight
7.99 kg/sBurst mass
Flight characteristics
13 000 mCeiling
Nakajima Homare 21Engine
airCooling system
Speed of destruction
837 km/hStructural
270 km/hGear
Offensive armament
2 x 30 mm Ho-155 cannonWeapon 1
120 roundsAmmunition
450 shots/minFire rate
2 x 20 mm Ho-5 cannonWeapon 2
300 roundsAmmunition
948 shots/minFire rate
Suspended armament
2 x 50 kg Army Type 94 GPHE bombSetup 1
2 x 250 kg Army Type 92 GPHE bombSetup 2
78 000 Rp icon.pngResearch
310 000 Sl icon.pngPurchase
Sl icon.png24 000 / 30 696/15 600 / 19 952/7 200 / 9 208Repair
90 000 Sl icon.pngCrew training
310 000 Sl icon.pngExperts
1 400 Ge icon.pngAces
184 % Rp icon.pngReward for battle
500 % Sl icon.png370 % Sl icon.png150 % Sl icon.png
This page is about the aircraft Ki-84 hei. For other uses, see Ki-84 (Family).


GarageImage Ki-84 hei.jpg

The Ki-84 hei Hayate is a rank IV Japanese fighter with a battle rating of 6.7 (AB) and 6.3 (RB/SB). This aircraft was introduced in Update 1.37.

General info

Flight Performance

The Hei Hayate is the exact same plane as the Ko and otsu - same good turn rate, climb rate, and compression. Having flown those two, the Hei Hayate is quite literally the exact same. As with the other two, use your excellent vertical energy retention and good maneuverability to your advantage. You can outturn all allies except the Merlin Spitfires and the P-59 using combat flaps. You still retain the OK roll rate and abysmal rudder of the other Hayates.

Characteristics Max Speed
(km/h at 6,000 m)
Max altitude
Turn time
Rate of climb
Take-off run
Stock 651 667 13 000 20.2 20.8 14.2 14.2 421
Upgraded 718 692 19.1 19.4 22.6 17.9


Combat flap Take-off flap Landing flap Air brakes Arrestor gear
Wing-break speed
Gear limit
Combat flap
Max Static G
+ -
837 270  ??? ~7.6 ~3.6
Optimal velocities
< ??? < ??? < ??? > ???
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
 ?,??? m  ??? hp  ?,??? hp

Survivability and armour

  • 70 mm sloped (66°) bulletproof glass in the windshield
  • 13 mm steel plate behind the pilot seat
  • 6 mm steel headrest


Offensive armament

The Ki-84 hei Hayateis armed with:

  • 2 x 30 mm Ho-155 cannons, wing-mounted (60 rpg = 120 total)
  • 2 x 20 mm Ho-5 cannons, nose mounted (150 rpg = 300 total)

Suspended armament

The Ki-84 hei Hayatecan be outfitted with the following ordnance:

  • Without load
  • 2 x 50 kg Army type 94 GPHE bomb
  • 2 x 250 kg Army type 92 GPHE bomb

Usage in battles

The Hei Hayate is the same great Hayate but with 2x 30 mm cannon instead of 2x20 mms. Although this might not seem too important, one hit from a HE 30mm shell will easily send your enemies to their doom. This solves the problem of the lacklustre 20 mms. When up-tiered to jets, focus on taking out propeller-powered aircraft. Climb high, and kill. Once all the props are down, look for furballs and/or ground-pounding jets. Swoop down on these people and destroy them. When jumped by a jet, there are a few things you can do such as pulling evasive manoeuvres and wearing the enemy's energy down. Call out for your jet teammates to help you out. When there is one more person running away, unless they are a bomber (which are typically easy to catch) or a prop fighter, will not be much for you to do. Just go to the airfield, repair, and "J"-out. Equip ground target rounds and bombs and try to wear down the tickets. Remember not to die. Survival is more important than ever in the Hei Hayate - your astounding repair cost means that you need to take down at least three air targets before breaking even with this aircraft's repair cost!

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 20 mm 9 in (Mod 23)
II Compressor Airframe New 20 mm cannons 12 in (mod 27)
III Wings Repair Engine Offensive 30 mm
IV Engine Injection Cover New 30 mm cannons

Pros and cons


  • Equipped with a very powerful array of weapons
  • Respectable speed for a prop plane
  • Decent high altitude performance
  • Capable turner
  • Solid energy retention
  • High muzzle velocity from both cannons
  • Insta-kill 30mms


  • 30 mm cannons are mounted in the wings, resulting in significant convergence
  • 30 mm cannons fire fairly slowly, which isn't ideal for dogfighting
  • Poor ballistics from the 20 mm cannons at this rank
  • Can and will face early jet fighters, which negate your speed advantage
  • Useless when the engine's shot
  • Airframe is highly susceptible to battle damage, especially of the incendiary type


The IJAAF approached Nakajima in 1942 to upgrade it's Ki 43 fighter. They realised the need for a more solidly armoured, faster, and heavier armed fighter. Addressing the common complaints with the Ki 43 which were low speed, lack of armour, and measly armament, the designers at Nakajima unleashed the Ki 84 - Japan's fastest propeller-driven fighter. Using the firm's own Homare, the Ki 84 was easily able to keep up and dogfight with the P-51 and P-47. The Hayate was produced in three modifications which happened to be the same aircraft with different armament options. These three are available to fly in-game.



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.

Nakajima Aircraft Company (中島飛行機株式会社 )
Fighters  Ki-27 otsu · Ki-27 otsu Tachiarai
  Ki-43-I · Ki-43-II · Ki-43-III otsu
  Ki-44-I · Ki-44-I 34 · Ki-44-II otsu · Ki-44-II hei
  Ki-84 ko · Ki-84 otsu · Ki-84 hei
Hydroplanes  A6M2-N*
Interceptors  J1N1 · J5N1
Bombers  B5N2
  B6N1 Model 11 · B6N2 Model 12 · B6N2a Model 12Ko
  G5N1 · G8N1
  Ki-49-I · Ki-49-IIa · Ki-49-IIb · Ki-49-IIb/L
Jet Fighters  Kikka
Captured  ␗Ki-27 otsu · ▃Ki-43-II · ␗Ki-43-III ko · ␗Ki-44-II hei · ␗Ki-84 ko
  *Refit of the Mitsubishi A6M2 mod. 11
See also  Fuji Heavy Industries (1957-2017)

Japan fighters
Carrier-based fighter 
A5M  A5M4 · Hagiri's A5M4
A6M  A6M2 mod. 11 · A6M2 · A6M3 · A6M3 mod. 22 · A6M3 mod. 22Ko · A6M5 · A6M5 Ko · A6M5 otsu
A7He  A7He1*
A7M  A7M1 (NK9H) · A7M2
Land-based Fighter 
J2M  J2M2 · J2M3 · J2M4 Kai · J2M5 · J2M5 (30 mm)
J6K  J6K1
J7W  J7W1
N1K-J  N1K1-Ja · N1K2-J · N1K2-Ja
Fighter seaplane 
N1K  N1K1
A6M-N  A6M2-N
Ki-10  Ki-10-I · Ki-10-I C · Ki-10-II · Ki-10-II C
Ki-27  Ki-27 otsu · Ki-27 otsu Tachiarai
Ki-43  Ki-43-I · Ki-43-II · Ki-43-III otsu
Ki-44  Ki-44-I · Ki-44-I 34 · Ki-44-II otsu · Ki-44-II hei
Ki-61  Ki-61-I ko · Ki-61-I otsu · Ki-61-I hei · Ki-61-I hei Tada's · Ki-61-I tei · Ki-61-II
Ki-84  Ki-84 ko · Ki-84 otsu · Ki-84 hei
Ki-87  Ki-87
Ki-94  Ki-94-II
Ki-100  Ki-100 · Ki-100-II
Other countries  ▅F4U-1A · ▅Bf 109 E-7 · ▅Fw 190 A-5
  *Imported designation of the He 112 (A6M was in development - A7M wasn't heard of yet)