A7M1 (NK9H)

A7M1 (NK9H)

A7M1 (NK9H)

Japan

IV Rank

Battle rating:

AB	RB	SB
5.0	5.0	4.7

Class:

PREMIUM

Fighter

Naval aircraft

Purchase:4 080

Show in game

This page is about the Japanese premium fighter A7M1 (NK9H). For the regular version, see A7M2.

Description

The A7M1 Reppu (NK9H) is a premium rank IV Japanese fighter with a battle rating of 5.0 (AB/RB) and 4.7 (SB). It was introduced in Update 1.53 "Firestorm".

The A7M1 Reppu is the prototype version of the A7M2 in the tech tree fitted with a NK9H engine. In game this fighter is a jack of all trades - excellent energy retention, amazing turn rate, and acceptable speed. These traits make the Reppu an excellent weapon for players who enjoy being the tip of the spear.

General info

Flight performance

Characteristics	Max Speed (km/h at 6,900 m)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	594	578	11000	15.7	16.2	13.6	13.6	250
Upgraded	643	617		14.8	15.0	21.0	16.9

Details

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

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
826	310	510	510	280	~12	~10

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 400	< 380	< 380	> 317

Compressor (RB/SB)
Setting 1
Optimal altitude	100% Engine power	WEP Engine power
2,000 m	1,875 hp	2,089 hp
Setting 2
Optimal altitude	100% Engine power	WEP Engine power
6,000 m	1,675 hp	1,866 hp

Survivability and armour

• 13 mm steel plate behind seat, angled 13°
• 70 mm bulletproof glass forward of seat, angled 24°
• Self-sealing fuel tanks

Armaments

Offensive armament

The A7M1 (NK9H) is armed with:

• 2 x 20 mm Type 99 Model 2 cannons, wing-mounted (200 rpg = 400 total)
• 2 x 13.2 mm Type 3 machine guns, wing-mounted (300 rpg = 600 total)

Suspended armament

The A7M1 (NK9H) can be outfitted with the following ordnance:

• Without load
• 2 x 60 kg Navy Type 97 Number 6 bombs (120 kg total)

Usage in battles

The A7M1 Reppu is a relatively heavy plane but still performs very similar to an A6M Zero with the increased performance thanks to its high output engine. This engine however won't be the best outfitted on the A7M platform and a better can be found in the tech tree as the A7M2 which boasts a Ha-43 engine with 200 hp extra.

The A7M1 that takes the best of the A6M and does it better also translates it in aerial combat. With its higher output, very similar manoeuvrability and higher rip-speeds, it can engage in all playstyles; whether the situation calls for it the A7M can either turn fight, Boom-&-Zoom, energy fight and others. Yet even with its NK9H engine, it is sometimes tricky to maintaining energy fights with enemies like the F6F-5, P-51, etc.

The main focus of the A7M1 is a naval fighter, solidified by its only ordnance of 2 x 60 kg that only destroy vehicles at this rank with a direct hit. However, its strong armament of 13 mm and 20 mm machineguns makes it a hard-hitting fighter on most less-protected roof armors (<20 mm).

Tactics

Low altitude fighting

This is where the A7M1 (NK9H) shines and players familiar with the A6M will feel right at home and. Newer players will become familiar with its playstyle quite easily due its better performance and more forgiving yet punchier gun-choice with plenty of ammo to spare.

Only couple of planes like Spitfires can be a challenging opponent at low altitudes, mainly because most planes will lose energy when fighting with the A7M1 at low altitudes when the A7M1 is able to outturn and be on their tail in couple seconds. The 13 mm and 20 mm armaments combined are very deadly and will tear down a plane in a good placed burst. Aim for center of mass when turn fighting, and tail when tailing, especially the elevators.

High altitude fighting

Turn fighting at high altitude is rather difficult since, the higher you go, the less air pressure there is. This means there will be less air to lift your plane when doing a hard turn compared to sea level, meaning the A7M1 will not be able to turn as fast as you do at sea level. This should be taken into consideration since most of the planes at high altitudes (4+ km) often have superchargers or turbochargers (Wyvern S4 for example) and will make an easy prey out of you, as you do not maintain the same energy nor speed they maintain.

Bomber Interception

The drawbacks from high altitude does not stop the A7M1 from fighting in the clouds. One of the easiest targets for the A7M1 are bombers. They are big, have big wingspans and are often slow (unless they are dive bombers or strike fighters). They can be easily destroyed with the 13 mm and 20 mm armaments due to their sheer caliber and destructive ammunition. When engaging a bomber, aim for the engines or wings. With the right belts equipped, a few well placed shots the bombers will catch fire or even shred the wings.

Be careful when engaging bigger preys as they might turn into a predator if handled wrongly. Hit fast and hard, put bullets into the cockpit or make short work of their wings. Do not tail it, most bombers will shred the A7M badly and a fire is most guaranteed, which the A7M won't last long through.

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 13 mm
II		Compressor	Airframe	New 13 mm MGs	9 in (mod30)
III	Wings repair	Engine		Offensive 20 mm
IV		Engine injection	Cover	New 20 mm cannons
This is a premium vehicle: all modifications are unlocked on purchase

Pros and cons

Pros:

• Excellent energy retention
• Exceptional manoeuvrability below 500 km/h IAS
• Great armaments

Cons:

• Engine tends to overheat
• Slow compared to allied fighters
• Elevator lock up above 500+ km/h IAS
• Slow roll rate
• Cannons have low rate of fire

History

In late 1940, just after the A6M started entering its production phase, the navy requested Mitsubishi to start development of a direct successor by 1941, but due engine choice for a high-output compact engine was scarce, and the development team having their hands filled with development of the A6M2 Mod.21 and developing the J2M made Mitsubishi decide to scrap the request.

By 1942 as development of the A6M3 Mod.32 and J2M2 Mod.11 have been finished, the navy once more ordered Mitsubishi and their team to design a direct successor which would be faster and as nimble as the Zero, but as before, engines which would suit the plane were still in development and the team had to design a plane while still having to wait on a viable engine.

As development of the A7M platform came to an end, the last set piece and main problem of the A7M development, being the engine, led to the first prototype to make use of the Nakajima NK9 "Homare". This singular plane would be the first A7M and respectively would become the A7M1 and a trial flight would be performed on the 6th of May, 1944.

While the wingload was acceptable of 150 kg/m², manoeuvrability and handling were excellent but the engine was simply underpowered and couldn't meet the speed requirements the Navy were looking for and ended up in a disappointed cancel of the project.

But as Mitsubishi already got a greenlight to use Mitsubishi's home-made engine with the MK9 beforehand, the project sparked interest once more for the Navy with the A7M2.

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.

Mitsubishi Company (三菱商会)
Fighters	A5M4 · Hagiri's A5M4
	A6M2 mod. 11 · A6M2 · A6M3 · A6M3 mod. 22 · A6M3 mod. 22Ko · A6M5 · A6M5 Ko · A6M5 otsu · A6M5 Hei · A6M6c
	A7M1 (NK9H) · A7M2
	J2M2 · J2M3 · J2M4 Kai · J2M5 · J2M5 (30 mm)
Hydroplanes	F1M2
Interceptors	Ki-83 · Ki-109
Bombers	G4M1
	Ki-21-Ia · Ki-21-I hei · Ki-67-I Ko · Ki-67-I otsu
Jet Fighters	Ki-200
Captured	▃A6M2 · ␗A6M2
See also	Mitsubishi Heavy Industries, Ltd. (Post-War)