Ki-21-Ia

From WarThunder-Wiki
Jump to: navigation, search


Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

The Ki-21-Ia in the garage.

The Mitsubishi Ki-21-Ia is a Rank I Japanese twin engine medium bomber with a battle rating of 2.0 (AB) and 1.7 (RB/SB). It was introduced in Update 1.49 "Weapons of Victory".

The main purpose, usage and tactics recommendations

General play style

The Ki-21-Ia's role is a low-altitude medium bomber capable of destroying ground targets such as pillboxes and tanks. Although hindered by a low total bomb capacity, this aircraft is renowned for its impressive maneuverability. This being said, it is very easy for the Ki-49 to hover above an area and drop all of its payload rather quickly. The main targets of this bomber should be ground targets. The preferred naval targets of this plane should be destroyers and cargo ships, do not try to attack large vessels like carriers and battleships as your weak payload would not be strong enough to sink the vessel.

Vehicle characteristics

With light turret armament, the Ki-21 is a plane that would probably perform it's role as a bomber best at higher altitudes. The different bomb layouts on the plane add a degree of versatility, with the 20 x 50-kilogram bombs allow the plane to take out a lot of ground targets effectively. Though, if the plane were dragged into higher rank matches the bomb load would be pretty ineffective against ground vehicles and wouldn't be very efficient against bases. For bases, naturally the best loadout would be the 2X 500-kilogram bombs. For an early-rank bomber, it does it's job well and though it lumbers through the air from time to time, it is much more maneuverable than it's other Japanese equivalent, the H6K4.

Tactics

If attacked by fighters, it is important to remember and recognize the Ki-21's turning capabilities. It is actually possible to win lateral turn fights against fighters with this aircraft as she is one of the most maneuverable bombers if not the most maneuverable bomber in game. While the Ki-21's defensive firepower isn't going to deter enemies from attack you, they still can damage enemy planes.

This aircraft has the ability to hold up to 1000 kg of bombs in several different variations. 20x 50 kg bombs, 10 x 100kg, 4x 250 kg bombs, and 2 x 500 kg bomb. Use the 20 x 50 kg or 10 x 100 kg bombs to attack light tanks and light pillboxes. They are not viable against bigger targets, since direct hits are needed to destroy. This load out is particularly useful on maps have an abundance on non moving targets (light pillboxes) or lightly armoured targets (armoured cars or AA trucks for example). Use either of the 4x 250 kg or 2 x 500kg payload to destroy heavier targets such as medium tanks, pillboxes, destroyers, and cargo ships.

Although unconventional, this aircraft is a fantastic weapon if you want to bait the enemy. Ideally, you would want to attract a higher flying enemy down to you and to get into a turn fight. This way, depending on the enemy aircraft you can out maneuver and distract him while teammates fly down to finish him off.

Specific enemies worth noting

The planes that you should avoid is any plane with cannons as this plane while it is durable does not like to take hits from cannon rounds. The plane that should be feared the most is the LaGG-3-34 which has the 37mm cannon with the Air Target belts as 1 round from the 37mm cannon will either cripple the Ki-21 or destroy it immediately.

Counter-tactics

Pros and cons

Pros:

  • Very manoeuvrable.
  • Extensive bomb load for a Rank I Japanese bomber.
  • Decent cruising speed.
  • Durable, can take some hits.
  • Above average defensive armament for its BR.
  • Internal payload.

Cons:

  • Loses effectiveness with altitude.
  • No armour.
  • Defensive armament is still outclassed by many.
  • Falls quickly when attacked by multiple foes.
  • Head on attacks are usually fatal because of lack of protection for the pilots.

Specifications

Armaments

Defensive armaments

  • 1 x 7.7 mm Te-1 machine gun, nose turret (483 rpg)
  • 1 x 7.7 mm Te-1 Machine gun, ventral turret (483rpg)
  • 2 x 7.7 mm Type 89 machine guns, dorsal turret (450 rpg = 900 total)

Payloads

  • 20 x 50 kg Army Type 94 GPHE bombs
  • 10 x 100 kg Army Type 94 GPHE bombs
  • 4 x 250 kg Army Type 92 GPHE bombs
  • 2 x 500 kg Army Type 92 GPHE bombs

Engine & mobility

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator


Engine

Name: Nakajima Ha-5 14-cylinder radial x2
  • Cooling type: Air
  • Max power: 689 hp (Stock), 1533 hp (Upgraded)
  • Takeoff power: 857 hp (Stock), 1709 hp (Upgraded)
  • Mass: 625 kg
Name: Nakajima Ha-5 14-cylinder radial x2
  • Cooling type: Air
  • Max power: 680 hp (Stock), 783 hp (Upgraded)
  • Takeoff power: 848 hp (Stock), 951 hp (Upgraded)
  • Mass: 625 kg
Name: Nakajima Ha-5 14-cylinder radial x2
  • Cooling type: Air
  • Max power: 680 hp (Stock), 783 hp (Upgraded)
  • Takeoff power: 848 hp (Stock), 951 hp (Upgraded)
  • Mass: 625 kg

Stats

Stock
  • Max speed: 410 km/h
    • at height: 400 m
  • Max altitude: 8,600 m
  • Turn Time: 15.1 s
  • Rate of Climb: 1.4 m/s
  • Takeoff run: 600 m

Upgraded

  • Max speed: 454 km/h
    • at height: 400 m
  • Max altitude: 8,600 m
  • Turn Time: 13.0 s
  • Rate of Climb: 12.5 m/s
  • Takeoff run: 600 m}}
Stock
  • Max speed: 400 km/h
    • at height: 400 m
  • Max altitude: 8,600 m
  • Turn Time: 15.5 s
  • Rate of Climb: 3.1 m/s
  • Takeoff run: 600 m

Upgraded

  • Max speed: 432 km/h
    • at height: 400 m
  • Max altitude: 8,600 m
  • Turn Time: 14.0 s
  • Rate of Climb: 5.9 m/s
  • Takeoff run: 600 m}}
Stock
  • Max speed: 400 km/h
    • at height: 400 m
  • Max altitude: 8,600 m
  • Turn Time: 15.5 s
  • Rate of Climb: 3.1 m/s
  • Takeoff run: 600 m

Upgraded

  • Max speed: 432 km/h
    • at height: 400 m
  • Max altitude: 8,600 m
  • Turn Time: 14.0 s
  • Rate of Climb: 5.9 m/s
  • Takeoff run: 600 m}}

Modules and improvements

Being a bomber, speed is not necessarily an important attribute, however payload and defensive armament is. Upgrading the bombs allows for more target flexibility and damage potential while turret upgrades will help survivability. the turret belts and the "new turrets" upgrades are useful. The "new turrets" upgrade will allow you to fire the turrets for longer periods of time and having access to multiple ammunition belts is also helpful. The engine upgrades are also useful in that they will help you reach your target faster and will control engine temperature. Having all of the weapons upgrades will help drastically in unlocking the other modules on this aircraft. Getting the airframe module does help in survivability as it helps your plane's durability.

History of creation and combat usage

In 1936, the Imperial Japanese Army Air Service issued a requirement for a new heavy bomber to replace two previous models. This new heavy bomber had to have a crew of four to six men, a top speed of 400 km/h (250 mph), had to be able to carry a bomb load greater than 750 kg (1,650 lb), had to be able to climb to altitude in less than 8 minutes, and had to take off in less than 300m (980ft). The new bomber also had to utilize Nakajima Ha-5 or Mitsubishi Ha-6 engines and had to contain specific models of radios, amongst many other specifications. These requirements were quite extensive and there weren't many heavy bombers in existence at the time that could perform at these standards.

Mitsubishi produced two prototypes of the Ki-21 to meet these standards. This new design proved superior to the design submitted by Kawasaki but was nearly on-par with Nakajima's submission. In early tests, Nakajima's prototype, the Ki-19 had more reliable engines and a better bombing platform, while the Ki-21 had better overall performance. In later rounds of testing, after the Army Air Service ordered modifications to be made to both prototypes, the Ki-21 came out on top and won the Army's contract for a heavy bomber.

Production began in November 1937 and the bomber began to see action in August 1938. The specific variant seen in game, the Ki-21-Ia, was used on the Chinese front during the Second Sino-Japanese War and against the Soviet Union during the Nomohan Incident. The Ki-21 would start off successfully during early World War 2, but by the end of World War 2 it was relegated to second line duties or kamikaze attacks. Overall 2,064 Mitsubishi Ki-21s of all variants were produced for the Japanese Army Air Force.

Screenshots and fan art

Skins and camouflages for the Ki-21 series from live.warthunder.com.

Additional information (links)

References


Horsepower graphSidebar

[expand] [collapse] Japan Aircraft [collapse] [expand]

IJNAF Fighters
   Rank 1   
   Rank 2   
   Rank 4   
   Rank 5   
IJAAF Fighters
IJAAF Twin-engine Fighters
   Rank 1   
   Rank 2   
   Rank 3   
   Rank 4   
   Rank 5   
IJNAF Attackers
   Rank 1   
   Rank 2   
   Rank 3   
   Rank 4   
   Rank 5   
Bombers
   Rank 1   
  • Ki-21-Ia
   Rank 2   
   Rank 4   
   Rank 5   
Premium & Gift aircraft
   Rank 1   
   Rank 2   
   Rank 3   
   Rank 4   
   Rank 5   


Arcade ☑ Realistic ☐
Simulator ☐

Arcade ☐ Realistic ☑
Simulator ☐

Arcade ☐ Realistic ☐
Simulator ☑


ki_21_1ko.png

Icon-country-jap.png Ki-21-Ia
Nation Japan
Type Fighter
Fighting style Ground Attack
Bombing

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Empty Weight ~4251 kg
Empty Weight + fuel ~6381 kg
Takeoff Weight ~7914 kg
Wing Area ~69 m²
# Flap Positions 3
Number of Engines 2
Air Brakes no
Arrestor Gear no
Statistics
Power per Engine 783 hp
WEP Duration infinite
top speed ~432.00 kph at 400 m
Climb Rate ~5.90 m/s
Turn Time ~14.00 s
Wing loading (Empty) ~61.00 kg/m²
Characteristics
Empty Weight ~9371 lb
Empty Weight + fuel ~14067 lb
Takeoff Weight ~17447 lb
Wing Area ~746 ft²
# Flap Positions 3
Number of Engines 2
Air Brakes no
Arrestor Gear no
Statistics
Power per Engine 783 hp
WEP Duration infinite
Top speed ~268.43 mph at 1312 m
Climb Rate 19.36 ft/s
Turn Time 14.00 s
Wing loading (Empty) ~12.49 lb/ft²
Main Weapons
2 x Te-1 483 rpg
Payload Option 1
19 x 💣 50 kg Type 94 mod.5 Bomb
Payload Option 2
10 x 💣 100 kg Type 94 mod.10 Bomb
Payload Option 3
4 x 💣 250 kg Type 92 mod.25 Bomb
Payload Option 4
2 x 💣 500 kg Type 92 mod.50 Bomb
Limits
Max Speed limit 540 kph
Gear lmit 380 kph
Combat Flaps 450 kph
Max static +G's ~4
Max static -G's ~3
Optimal Velocities
Ailerons <260 kph
Rudder <260 kph
Elevators <260 kph
Radiator >180 kph
Limits
Max Speed limit 336 mph
Gear lmit 236 mph
Combat Flaps 280 mph
Max static +G's ~4
Max static -G's ~3
Optimal Velocities
Ailerons <162 mph
Rudder <162 mph
Elevators <162 mph
Radiator >112 mph
Manual Control
Mixer is not controllable
Pitch is controllable
no automatic pitch
Radiator (water) is controllable
Radiator (oil) is controllable
Oil and water uses different radiator control
Supercharger is not controllable
Turbocharger is not controllable
Compressor settings 1
Optimal Altitude
3700 m
12139 ft
100% Enginepower 1780 hp
WEP Enginepower 2159 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)