Ki-84 ko

Ki-84 ko

Ki-61-I hei

Ki-84 otsu

Ki-84 ko

Ki-61-I hei

Ki-84 otsu

Japan

IV Rank

Battle rating:

AB	RB	SB
6.0	5.3	5.0

Class:

Fighter

Research:54 000

Purchase:185 000

Show in game

This page is about the Japanese fighter Ki-84 ko. For other versions, see Ki-84 (Family).

Description

The Ki-84 ko Hayate is a rank IV Japanese fighter with a battle rating of 6.0 (AB), 5.3 (RB), and 5.0 (SB). It was introduced in Update 1.37.

General info

Flight performance

The Ki-84 ko is the first truly fast aeroplane in the Japanese tech tree. Equipped with a 2,000 hp engine, this aircraft's performance is on par with that of the legendary P-51 Mustang. However, unlike the Mustang, the Ki-84 has slightly better turning characteristics and climb rate thanks to its lighter weight. This being said, the Ki-84 also has good energy retention, so try to make your opponent bleed energy to have an edge. The Ki-84 was also one of the first mass-produced Japanese aircraft to come equipped with armoured glass, armour plates and self-sealing fuel tanks, but the armour is still lacklustre compared to its Russian and American counterparts. However, as always, not everything is perfect. The aircraft controls stiffen significantly at speeds above 630 km/h, making even slight adjustments to heading impossible. Thus, at higher speeds, its elevator suffers. The Ki-84 also suffers a lot when no modules are researched, making the aircraft almost useless until modifications are unlocked.

This aircraft should be played as it appears: a lightweight Japanese version of the Mustang, retaining good engine performance, decent climb-rate, high diving performance, but relatively lacklustre armament.

Characteristics	Max Speed (km/h at 6,000 m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
	AB	RB		AB	RB	AB	RB
Stock	668	651	13000	20.2	20.8	14.2		421
Upgraded	718	692		19.1	19.4	22.6	17.9

Details

Features
Combat flaps	Take-off flaps	Landing flaps	Air brakes	Arrestor gear
✓	✓	✓	X	X

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
837	270	500	380	280	~13	~9

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 400	< 480	< 430	> 324

Compressor	Optimal altitude	100% Engine power	WEP Engine power
Setting 1	2,000 m	1,875 hp	2,100 hp
Setting 2	5,300 m	1,675 hp	1,876 hp

Survivability and armour

• 70 mm bulletproof glass in front of pilot
• 6 mm steel behind pilot's head
• 13 mm steel behind pilot
• Self-sealing fuel tanks (1 under pilot's feet, 1 in each wingroot)

Armaments

Offensive armament

The Ki-84 ko is armed with:

• 2 x 20 mm Ho-5 cannons, wing-mounted (150 rpg = 300 total)
• 2 x 12.7 mm Ho-103 machine guns, nose-mounted (350 rpg = 700 total)

Suspended armament

The Ki-84 ko can be outfitted with the following ordnance:

• Without load
• 2 x 50 kg Army Type 94 GPHE bombs (100 kg total)
• 2 x 250 kg Army Type 92 GPHE bombs (500 kg total)

Usage in battles

Realistic Battles

The Ki-84 ko is a very good multi-purpose fighter, its capable of energy fighting and sustained dog fighting making it a menace to face with few enemies matching it, it takes a rather skilled pilot to shake these off as they have great turn fighting capabilities, good climb rate and a decent top speed for their BR.

It is important to remember that when uptiered, you will be fighting aircraft such as the Spitfire F Mk 22, which is faster both in a straight line and in a shallow or step dive, the best way to reliable deal with this threat is to coax your enemy into a rolling scissors or sustained dog fight as the Spitfire F Mk 22 does not have a faster turn rate than the Ki-84 ko, alternatively if they do not dog fight and they are above you, you can force an over-shoot with some defensive flying and catch the Spitfire either as it passes or when it starts to go back up into its climb thanks to the Ki-84 ko's good climb rate.

The Ki-84 ko is not very well armoured at all and should avoid any head on engagements or well defended aircraft such as B-24's as it is rather fragile to enemy fire. The weaponry isn't spectacular either and may require a bit of practice as they are rather lack luster compared to other planes you will fight.

As a Ki-84 pilot your safest bet is to climb above your opponents and pick and choose your battles, often a good strategy to use is to hunt down the highest altitude enemies and pick them off one by one, remember not to waste all the altitude you have obtained as altitude is your friend in the Ki-84, whether you prefer Boom and Zoom or Dogfighting, the Ki-84 ko is sure to please you.

Simulator Battles

In simulator, the Ki-84 is overall a decent plane to fly. It enjoys lovely visibility towards the rear, sides, above, and over the nose, giving the pilot great situational awareness. It has nice handling, good climb rate, great speed and acceleration. Armament wise, the guns have enough fire rate to put quite a few projectiles into the target in one pass. However the Ki-84’s disadvantages are the limited damage, rudder efficiency at high speeds, the rather poor roll rate, and the compass at the front-right of the gunsight that can obstruct your view. This aircraft can be used in BnZ fighting, turn fighting, intercepting (to some extent) and some ground pounding.

Before taking off, bring at least 30 minutes of fuel for longer patrol time. Set the convergence to around 250 m since your weapons have low velocity, therefore needing more precise aim at longer range. While your Ki-84 roars down the runway, you will notice that it shifts severely to the left, thus you must put rudder input to the right to taxi straight. As with other Ki series aircraft, only elevator trim is available, so when the stick is at its deadzone, the Ki-84 will roll and yaw to the left side. Therefore you always need to pull the stick a little to the right which can get a bit annoying. Usually, trim for around -1% when cruising around 470 kph, around -5% when diving around 600 kph, and when fighting at around 400 kph no negative trim is needed. When carrying the 2x 250kg bombload, no negative trim is needed as well. Landing characteristics are forgiving: cut throttle to make sure you are not above 350 kph before touchdown. Deploy combat then takeoff flaps to further decelerate in preparation for extending landing gears. Extend at around 260 kph, control your descend rate throughout. Right before touchdown, deploy landing flaps. The gears are quite sturdy. You can break until the plane reaches full stop and not worry about propeller strike.

For dogfighting, it is always safer to enter with an altitude advantage. Most dogfights in Sim happen around or below 3,000 m so the Ki-84 can easily climb up to that altitude. Once at an advantageous height, boom & zoom the enemies. The Ki-84 can easily accelerate to more than 550 km/h in a dive which is decently fast but requires more precise manoeuvres to get the correct lead, since the faster you go the smaller the shooting window is. Important note: when fighting above 550 kph, you want to be more precise in the roll and pitch axis, since at this speed the rudder locks up severely, preventing you from making aim adjustments which negatively impacts the lead. You must pretend that your rudder doesn’t exist and fully rely on the ailerons and elevators to lead. A successful pass will not usually cripple the enemy given the projectiles’ lacklustre damage, so multiple attacks are needed to destroy one plane. Aside from BnZ, the Ki-84 is also excellent at turn fighting - with the appropriate opponent, of course. Except a few dedicated turn fighters, the Ki-84 can out-turn and get on most opponents' tail with combat / takeoff flaps deployed, and can sustain its turning ability throughout the fight. The Ki-84’s stable handling allows you to pull some tight maneuvers, so don’t worry too much about flat spins. If you become a prey, try some defensive manoeuvres like barrel rolls or disengage by diving steeply towards a nearby friendly airfield. Note that the Ki-84's roll rate is very average so avoid manoeuvres like scissors.

When performing the “destroy enemy surveillance aircraft/attackers/bombers” task, it is crucial to constantly evade the turrets. If it is a bomber/attacker with decent defensive firepower or robust protection, then you might want to disengage after some attempts if you don't want to die. Pay special attention to any plane equipped with M2 Browning MG, they can critically damage the Ki-84 especially on the engine, fuel tanks, and pilot which can always lead to a later crash. Before attacking try to get an altitude advantage and perform deflection shots. To maximise the damage it is better to aim for their wings and engines, as the fuselage usually soaks up quite some bullets. Only fire when the bomber passes in front of your guns. This short window is not enough to cripple a twin-engine aircraft given the slow velocity, light projectiles and low one-second burst mass. However sometimes it only takes one bullet to set the target aflame. DO NOT follow behind a bomber's 6 unless you are sure that its tail gunners are unconscious. Chasing behind a bomber makes yourself pretty much stationary for the tail gunners, and you will be showered with bullets.

Manual Engine Control

MEC elements
Mixer	Pitch	Radiator			Supercharger	Turbocharger
		Oil	Water	Type
Controllable	Controllable Not auto controlled	Controllable Not auto controlled	Controllable Not auto controlled	Separate	Controllable 2 gears	Not controllable

Modules

Tier	Flight performance		Survivability	Weaponry
I	Fuselage repair	Radiator		Offensive 12 mm	9 in (mod23)
II		Compressor	Airframe	New 12 mm MGs	12 in (mod27)
III	Wings repair	Engine		Offensive 20 mm
IV		Engine injection	Cover	New 20 mm cannons

Pros and cons

Pros:

• Incredible rate of climb
• Good top speed
• Great acceleration
• Good performance at altitude
• Much better dive speed than the earlier Ki-61 series
• Good manoeuvrability at lower speeds
• Good energy retention

Cons:

• Lower maximum dive speed than its American counterparts
• Unspectacular weaponry
• Somewhat vulnerable to damage
• Elevator locks up at high speeds

History

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 long, 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></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

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

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