A7M1 (NK9H)

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A7M1 Reppu (NK9H)
General characteristics
1 personCrew
4.41 tTake-off weight
3.33 kg/sBurst mass
Flight characteristics
11000 mCeiling
Nakajima Homare 21Engine
airCooling system
Speed of destruction
826 km/hStructural
310 km/hGear
Offensive armament
2 x 20 mm Type 99 Model 2 cannonWeapon 1
400 roundsAmmunition
490 shots/minFire rate
2 x 13.2 mm Type 3 machine gunWeapon 2
600 roundsAmmunition
798 shots/minFire rate
Suspended armament
2 x 60 kg Navy Type 97 Number 6 ground bombSetup 1
2190 Ge icon.pngPurchase
Sl icon.png6100/8700/3000Repair
10000 Sl icon.pngCrew training
160000 Sl icon.pngExperts
500 Ge icon.pngAces
142 × 2 Talisman.png % Rp icon.pngReward for battle
180 × 2 Talisman.png % Sl icon.png260 × 2 Talisman.png % Sl icon.png80 × 2 Talisman.png % Sl icon.png
This page is about the Japanese premium fighter A7M1 (NK9H). For the regular version, see A7M2.


GarageImage A7M1 NK9H.jpg

The A7M1 Reppu (NK9H) is a premium rank III Japanese fighter with a battle rating of 4.3 (AB), 5.0 (RB), and 4.0 (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
Turn time
Rate of climb
Take-off run
Stock 594 578 11000 15.7 16.2 13.6 13.6 250
Upgraded 639 617 14.8 15.0 21 16.9


Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
Wing-break speed
Gear limit
Combat flaps
Max Static G
+ -
826 310 510 ~12 ~10
Optimal velocities
< 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, tilted 13°
  • 70 mm bulletproof glass forward of seat, tilted 24°
  • Self-sealing fuel tanks


Offensive armament

The A7M1 (NK9H) is armed with:

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

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
Not auto controlled
Not auto controlled
Separate Controllable
2 gears
Not controllable


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


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


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


Main article: History of the A7M

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, maneuverability 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.


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
  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 (1945+)

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)

Japan premium aircraft
Fighters  Hagiri's A5M4 · A7He1 · Ki-27 otsu Tachiarai
  Ki-44-II otsu · ▅Bf 109 E-7 · ▅F4U-1A · Ki-100-II · Ki-44-I 34
  ▅Fw 190 A-5 · A7M1 (NK9H) · Ki-61-I hei Tada's
  J2M4 Kai · A6M5 Ko · J2M5 · Ki-87 · J6K1
Twin-engine fighters  Ki-96
Jet fighters  F-86F-40 JASDF▅
Bombers  Ki-21-I hei · H8K3 · ▅B-17E