Ki-27 otsu

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

rightThe Ki-27 otsu in the garage.

The Ki-27 otsu is a Rank I Japanese fighter with a battle rating of 1.3 (AB/RB/SB). It was introduced in Update 1.43.

The main purpose, usage and tactics recommendations

General play style

The Ki-27 is a front-line fighter for interwar / pre-WW2 historical engagements such as the Battles of Khalkin Gol. In most maps, the Ki-27 will distinguish itself as a low-level dogfighter; its performance below 1000m altitudes is superb, and is able to maneuver away from nearly any other comparable fighter. Like the Ki-10 series before it, the Ki-27 otsu suffers from its poor armament (twin 7.7mm Type 89s) and poor armor, which means it makes for a poor interceptor despite its high speed, but the Ki-27 makes a great escort for friendly bombers and flying boats. Providing cover for their allied bombers is a top priority for the Ki-27 pilots.

Like its Ki-10 predecessor, the Ki-27 relies on its maneuverability for its protection. Turn-Fighting, therefore, is key for a Ki-27 pilot. Avoid diving on opponents, due to the Ki-27's fuel feed issues, and focus on scaring enemy pursuers away from bombers rather than chasing a kill. A lone Ki-27 is easy prey for allied energy fighters. Like most Japanese fighters, engaging an enemy head-on is not recommended. If engaging an enemy "Energy Fighter" head-on, a good strategy is to just turn away (usually a shallow turn as you'll want him to miss you, but also pass you), and hope that he turns to follow.

Vehicle characteristics

Like the comparable A5M4, the Ki-27's carbureted engine suffers from fuel feed issues in negative G maneuvers, like diving. Nosing down will cause the engine to choke out. Positive G maneuvers like the Split-S are preferred. This issue will allow enemies to out dive the Ki-27, so engaging at low altitudes is preferred.

Additionally, the Ki-27 runs hot and will overheat at 100% throttle on all but the coldest maps. To cool off, ease the throttle back to 40% or 50% and, if possible, try to gain altitude. If the engine overheats during a dog fight, try to break off if the opportunity presents itself. No pilot can outmaneuver an overheated engine.

Tactics

A superior dogfighter for turn-fighting, the Ki-27 is the first plane to begin showing the features typical of the Japanese "Zero" but with none of the bite. Its speed and maneuverability are plagued by engine problems, with no armour and a mediocre armament.

In battle, no Allied fighter can out-turn you, except for biplanes, but most will outgun you (and even most biplanes match the Ki-27 in armament).
Bi-planes (except the I-153 Chaika) make easy prey for the Ki-27, and the Ki-27 can easily outmaneuver the P-36 Hawk, the F2A Brewster Buffalo and the I-16 Ishak, but their heavier armaments will knock out a Ki-27 in a single good burst. Simply outrunning any of them is a good evasive maneuver. Hurricane Mk Is can closely complete with the Ki-27 otsu in maneuverability, but the Hurricane's heavier armament (four times what the Nate has) can also quickly shred a Ki-27. Additionally, outrunning a Hurricane in a Ki-27 is just not possible. I-15s, which the Ki-27 historically outperformed, will be the bane of a Ki-27s existence, as their excellent turn abillity will force the Nate to energy bleeding maneuvers or BnZ style combat. Risky with competition around to abuse either state.

Specific enemies worth noting

Despite its low BR of 1.3, you can face some very difficult foes when flying the Ki-27. Bi-planes will give you a run for your money in terms of maneuverability, while some early mono-planes will be faster and more heavily armed than you. Therefore, it is important to judge your foes accordingly.


One of the most challenging opponents is the Chaika. It is not a mere upgraded I-15bis, but in all performance aspects equal to the Nakajima Ki-27 fighter. Also on the Russian side, the Mig-3 is a big threat. It is one of the fastest aircraft in its battle rating and has decent armament. In skilled hands it can be an almost impossible opponent to combat, especially when using BnZ tactics against you. Your only defence will be to try and out maneuver it or to lure it into a turn fight. The I-16 is also a common opponent.\

From America, you will face the P-26. They are quite good divers and have a decent roll rate, but will not be able to outmaneuver you in a turn fight. The P-36 is more challenging. Faster and well armed, you will have to rely on your turn rate to try and out maneuver them.

Counter-tactics

Pros and cons

Pros:

  • Great maneuverability, on par with biplanes.
  • Good stability in turns.
  • Good speed, for its tier.

Cons:

  • Limited climb.
  • Limited firepower.
  • Engine overheats rapidly on hot maps.
  • Engine chokes in negative g dives.
  • No armour.

Specifications

Armaments

  • 2 x 7.7 mm Type 89 machine guns, nose mounted (500 rpg = 1,000 total)

Type_89

Type_89

Type 89

Pros

Cons



Engine & mobility

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator


Engine

Name: Nakajima Kotobuki 41 9-cylinder radial
  • Cooling type: Air
  • Max power: 541 hp (Stock), ____ hp (Upgraded)
  • Takeoff power: 663 hp (Stock), ____ hp (Upgraded)
  • Mass: 350 kg
Name: Nakajima Kotobuki 41 9-cylinder radial
  • Cooling type: Air
  • Max power: 534 hp (Stock), ____ hp (Upgraded)
  • Takeoff power: 656 hp (Stock), ____ hp (Upgraded)
  • Mass: 350 kg
Name: Nakajima Kotobuki 41 9-cylinder radial
  • Cooling type: Air
  • Max power: 534 hp (Stock), ____ hp (Upgraded)
  • Takeoff power: 656 hp (Stock), ____ hp (Upgraded)
  • Mass: 350 kg

Stats

Stock
  • Max speed: 476 km/h
    • at height: 3500 m
  • Max altitude: 8500 m
  • Turn Time: 10.4 s
  • Rate of Climb: 6.2 m/s
  • Takeoff run: 180 m

Upgraded

  • Max speed: ___ km/h
    • at height: 3500 m
  • Max altitude: 8500 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 180 m
Stock
  • Max speed: 465 km/h
    • at height: 3500 m
  • Max altitude: 8500 m
  • Turn Time: 11.0 s
  • Rate of Climb: 8.8 m/s
  • Takeoff run: 180 m

Upgraded

  • Max speed: ___ km/h
    • at height: 3500 m
  • Max altitude: 8500 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 180 m
Stock
  • Max speed: 465 km/h
    • at height: 3500 m
  • Max altitude: 8500 m
  • Turn Time: 11.0 s
  • Rate of Climb: 8.8 m/s
  • Takeoff run: 180 m

Upgraded

  • Max speed: ___ km/h
    • at height: 3500 m
  • Max altitude: 8500 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 180 m

Performance

Warning this is still in the test phase and is probably incorrect. Take information with a grain of salt (data taken from 1.55)



0
1
2
3
4
5
6
7
8
9
10
0
0.18
0.36
0.54
0.72
0.9
Horsepower in 1000hp
Altitude in 1000m

Supercharger Stage #1: 100%

Supercharger Stage #1: WEP



Modules and improvements

At this rank, order of research is largely personal preference, though the Ki-27 otsu will benefit greatly from defensive and performance enhancing modifications.

History of creation and combat usage

The Nakajima Ki-27 otsu began as the Ki-11, a competitor for the Kawasaki Ki-10 biplane. While faster and more modern than the Ki-10 biplane, the Ki-11 wasn't adopted because the Imperial Japanese Army valued maneuverability over speed. Nakajima continued development of the design before finalizing the Ki-12, a modern monoplane with liquid-cooled engine and retractable landing gear, but the Army denied it outright as too maintenance heavy for forward airbases in Manchurian and China. The redesigned plane instead featured a radial air-cooled engine, fixed landing gear and fully enclosed cockpit and received the designation Ki-27.

In 1936, the Ki-27 competed against the Kawasaki Ki-28 (a prototype design fated to never enter production) and the Mitsubishi Ki-33 (a de-navalized A5M). While the Ki-33 outperformed the Ki-27 in most regards, the Imperial Japanese Army was loathe to adopt a "navy fighter", and adopted the Ki-27 with minor modifications. The Ki-27 entered service as the Army Type 97 Fighter.

While the Ki-10 would not be finally phased out from front line service until 1942, by 1940 the Ki-27 was the premiere army fighter on the front lines. It was unmatched by any plane in the Chinese air force inventory, and outperformed the Soviet I-15 and I-16 fighters in the Battles of Khalkhin Gol, with some pilots scoring 11 kills against Soviet planes in a single day. Against Chinese Curtiss P-36 Hawks, veteran Ki-27 pilots achieved similar, but not as impressive kill rates.

Over China, the Ki-27 was unmatched until the deployment of the P-40 Warhawks with the American Volunteer Group. After, America's entry into the war, the Ki-27 also fared poorly against the US Navy's F2A Brewster Buffalo and F4F Wildcat, and was removed from most front line service within the first months of the war, replaced by the much improved Ki-43. However, it remained a front line fighter in Thai service, where the Ki-27 scored recorded kills against P-51s and at least one P-38.

Because of their high production numbers and relatively few losses, Ki-27 would see a renewed role late in the war as Kamikaze planes.

Ingame description

@var:description

The Nakajima Ki-27 (九七式戦闘機 Kyūnana-shiki sentōki, or Type 97 Fighter; Allied Codename "Nate") was the main fighter aircraft used by the Imperial Japanese Army Air Force up until 1940. Its Allied nickname was "Nate".

The Japanese achieved air superiority over China and threatened even the Soviets with the Ki-27 when it was first introduced. Nothing the Chinese or Soviets had available to them were able to match the Ki-27's ability to dogfight effectively, and the kill ratio of the Ki-27 was high.

Note: The Ki-27 was the main Japanese fighter used in the Battles of Khalkin Gol, though this is not yet reflected (as of 4/2/2015) in War Thunder's Dynamic Campaign mode, which has Ki-10's and Ki-43's, likely due to the fact that the Ki-27 arrived in a later patch.

The version in War Thunder has fuel "bumps" integrated into the plane.

Screenshots and fan art

Skins and camouflages for the Ki-27 series from live.warthunder.com.

Additional information (links)

References


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ki-27_otsu.png

Icon-country-jap.png Ki-27 otsu
Nation Japan
Type Fighter
Fighting style Turn Fighting

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Empty Weight ~1186 kg
Empty Weight + fuel ~1424 kg
Takeoff Weight ~1790 kg
Wing Area ~19 m²
# Flap Positions 2
Number of Engines 1
Air Breaks no
Arrestor Gear no
Statistics
Power per Engine 610 hp
WEP Duration infinite
top speed ~446.98 kph at 3500 m
Climb Rate ~12.80 m/s
Turn Time ~15.50 s
Wing loading (Empty) ~64.00 kg/m²
Characteristics
Empty Weight ~2615 lb
Empty Weight + fuel ~3139 lb
Takeoff Weight ~3946 lb
Wing Area ~200 ft²
# Flap Positions 2
Number of Engines 1
Air Breaks no
Arrestor Gear no
Statistics
Power per Engine 610 hp
WEP Duration infinite
Top speed ~277.74 mph at 11483 m
Climb Rate 41.99 ft/s
Turn Time 15.50 s
Wing loading (Empty) ~13.11 lb/ft²
Main Weapons
2 x Type 89 500 RPG
Limits
Max Speed limit 554 kph
Gear lmit 550 kph
Combat Flaps 350 kph
Max static +G's ~18
Max static -G's ~12
Optimal Velocities
Ailerons <350 kph
Rudder <350 kph
Elevators <350 kph
Radiator >260 kph
Limits
Max Speed limit 344 mph
Gear lmit 342 mph
Combat Flaps 217 mph
Max static +G's ~18
Max static -G's ~12
Optimal Velocities
Ailerons <217 mph
Rudder <217 mph
Elevators <217 mph
Radiator >162 mph
Manual Control
Mixer is controllable
Pitch is controllable
no automatic pitch
Radiator (water) is controllable
Radiator (oil) is not controllable
Oil and water uses combined radiator control
Supercharger is not controllable
Turbocharger is not controllable
Compressor settings 1
Optimal Altitude
3300 m
10827 ft
100% Enginepower 680 hp
WEP Enginepower 816 hp
* Warning this is still in the test phase and can be incorrect. Take information with a grain of salt (data from 1.57 initial release)