D4Y3 Ko

D4Y3 Ko

D4Y2

P1Y1 mod. 11

D4Y3 Ko

D4Y2

P1Y1 mod. 11

Japan

II Rank

Battle rating:

AB	RB	SB
3.0	3.0	3.0

Class:

Bomber

Naval aircraft

Dive bomber

Research:11 000

Purchase:22 000

Show in game

This page is about the Japanese dive bomber D4Y3 Ko. For other uses, see D4Y (Family).

Description

The D4Y3 Ko is a rank II Japanese dive bomber with a battle rating of 3.0 (AB/RB/SB). It was introduced in Update 1.71 "New E.R.A".

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.

Characteristics
Stock
Max Speed (km/h at 6,050 m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
AB	RB		AB	RB	AB	RB
541	529	9800	22.8	23.4	5.7	5.7	350
Upgraded
Max Speed (km/h at 6,050 m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
AB	RB		AB	RB	AB	RB
610	574	9800	21.6	22.0	16.5	10.4	350

Details

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

Limits
Wing-break speed (km/h)	Gear limit (km/h)	Combat flaps (km/h)	Max Static G
			+	-
		480	~15	~11

Optimal velocities
Ailerons (km/h)	Rudder (km/h)	Elevators (km/h)	Radiator (km/h)
< 350	< 400	< 430	> 335

Compressor (RB/SB)
Setting 1
Optimal altitude	100% Engine power	WEP Engine power
1,000 m	1,280 hp	1,684 hp
Setting 2
Optimal altitude	100% Engine power	WEP Engine power
5,000 m	1,185 hp	1,559 hp

Survivability and armour

Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.

Armaments

Offensive armament

The D4Y3 Ko is armed with:

• 2 x 7.7 mm Type 97 navy machine guns, nose-mounted (400 rpg = 800 total)

Suspended armament

The D4Y3 Ko can be outfitted with the following ordnance:

• Without load
• 1 x 250 kg Navy Type Number 25 Model 2 bomb + 2 x 60 kg Navy Type 97 Number 6 bombs (370 kg total)
• 3 x 250 kg Navy Type Number 25 Model 2 bombs (750 kg total)
• 1 x 500 kg Number Type 2 50 Model 1 GP(SAP) bomb (500 kg total)
• 1 x 500 kg Number Type 2 50 Model 1 GP(SAP) bomb + 2 x 60 kg Navy Type 97 Number 6 bombs (620 kg total)

Defensive armament

The D4Y3 Ko is defended by:

• 1 x 13 mm Type 2 navy machine gun, dorsal turret (250 rpg)

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	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 7 mm	9 in (mod35)
II		Compressor	Airframe	New 7 mm MGs
III	Wings repair	Engine		Turret 13 mm	13 in (mod35)
IV		Engine injection	Cover	New 13 mm MGs (turret)

Pros and cons

Pros:

• Extremely agile for a dive bomber aircraft and is very useful in naval arcade battles as it can avoid enemy ship AAA and deliver its payload

Cons:

History

Nicknamed the "Judy" by allied pilots, the D4Y3 was feared by both troops on the ground and ships in the sea.

The D4Y3 was converted to be a land based Dive Bomber, while its predecessor the D4Y2 was a carrier based dive bomber. The removal of the tail hook and the addition of the Mitsubishi Kinsei 62 radial engine added 150 horse power while reducing weight. The D4Y3 would see 3 variants, D4Y3 model 33, D4Y3 model 33A, and D4Y3 model 33 night-fighter.

Differences between the Model 33 and the Model 33a was the A variant had the Type 1, 7.92mm rear firing machine gun replaced with an upgraded Type 2, 13mm rear firing machine gun. With the night-fighter variant being equipped with an upwards firing 20mm cannon. Only 3 night-fighters were built as the D4Y2 night fighters were being used with success with fighters already available and assembly lines already making them.

With a range of 1,400 miles the D4Y3 was perfect for the defense of the Japanese territories. Combined with its extreme accuracy in a dive it saw great success especially in the battles at the end of the war. Notably, crippling the USS Kalinin Bay and the USS Suwannee both escort carriers. Eventually they would convert the D4Y3 into a D4Y4, which was exactly the same as the D4Y3 except it carried an un-removable 800kg bomb for kamikaze attacks. Some D4Y4's were equipped with rockets to increase the speed at which the aircrafts would strike their targets increasing the damage they caused.

No D4Y3's survived the war, but a D4Y1 was reconstructed with a Pratt and Whitney R-1830 radial engine to represent a D4Y3. This plane can be seen at the Planes of Fame Air Museum in Chino, California.

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.

Yokosuka Naval Air Technical Arsenal (海軍航空技術廠)
Bombers	D4Y1 · D4Y2 · D4Y3 Ko
	P1Y1 mod. 11
Jet fighters	R2Y2 Kai V1 · R2Y2 Kai V2 · R2Y2 Kai V3
Captured	␗P1Y1 mod. 11
	While the arsenal was simply known as the Naval Air Technical Arsenal and usually referred to as Kūgi-shō (Kaigun Kōkū Gijutsu-shō).
	The name Yokosuka prevailed however, even though it referred to the Arsenal's location.
See also	Yokosuka Naval Arsenal (Shipyard)

Japan bombers
Navy
Carrier-based attack bomber
B5N	B5N2
B6N	B6N1 · B6N2 · B6N2a
B7A	B7A2 · B7A2 (Homare 23)
Carrier-based dive bomber
D3A	D3A1
D4Y	D4Y1 · D4Y2 · D4Y3 Ko
Shipboard Observation seaplane
F1M	F1M2
Land-based Attack bomber
G4M	G4M1
G5N	G5N1
G8N	G8N1
Flying boat
H6K	H6K4
H8K	H8K2 · H8K3
Land-based Bomber
P1Y	P1Y1
Army
Light	Ki-32
	Ki-48-II otsu
Heavy	Ki-21-Ia · Ki-21-I hei
	Ki-49-I · Ki-49-IIa · Ki-49-IIb · Ki-49-IIb/L
	Ki-67-I Ko · Ki-67-I otsu
Other countries	▅B-17E