CW-21

CW-21

␗Ki-43-III ko

360://https://wiki.warthunder.com/images/a/a7/Cockpit_cw_21.jpg

CW-21

␗Ki-43-III ko

China

I Rank

Battle rating:

AB	RB	SB
2.0	2.7	2.0

Class:

Fighter

Research:4 000

Purchase:2 100

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Description

The CW-21 is a rank I Chinese fighter with a battle rating of 2.0 (AB/SB) and 2.7 (RB). It was introduced in Update 1.91 "Night Vision".

A unique and capable fighter, the CW-21 will be a surprise to pilots stepping into the Chinese tech tree. Its appearance is unusual but elegant: the spindly wings, highly tapered fuselage, and bulbous nose hint at its high-flying capabilities. The first few Chinese aircraft can be a struggle to fly and master, however, the CW-21 picks up the slack the moment it gets airborne. The CW-21 begins lifting off when reaching 145 kph (90 mph), and climbs like a rocket, leaving all other planes at its rank in the dust. While speaking of speed, the CW will quickly outrun and outpace most of the competition, leading to a lot of the primary biplane opposition simply being unable to catch up and get within firing distance.

When it comes to firepower, this bird has talons and easily uses its 2 x .50 calibre M2s plus 2 x .30 calibre M1919s to decimate any plane that crosses its path. While it can punch hard with its guns, it cannot take any beating in return due to its complete lack of protection. Not that it will be getting hit much, as a competent pilot will tell you manoeuvrability is key and an agile plane it is. The turn time is easily competitive with most if not all biplanes, except possibly the I-153 that intrinsically trumps all other aircraft when it comes to turning and turn fighting. All in all, the CW-21 is a powerhouse, ready to ascend to great heights and deliver death from above.

General info

Flight performance

Max speed

at 3 700 m505 km/h

Turn time14 s

Max altitude10 800 m

EngineWright R-1820-G5

TypeRadial

Cooling systemAir

Take-off weight2 t

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 3,700 m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
AB	RB		AB	RB	AB	RB
480	465	10800	14.2	15.0	13.4	13.4	343
Upgraded
Max Speed (km/h at 3,700 m)		Max altitude (meters)	Turn time (seconds)		Rate of climb (meters/second)		Take-off run (meters)
AB	RB		AB	RB	AB	RB
533	505	10800	13.8	14.0	24.6	18.2	343

Details

The sleek CW-21 in flight.

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

Limits
Wing-break speed (km/h)	Gear limit (km/h)	Combat flaps (km/h)	Max Static G
			+	-
		380	~10	~5

Optimal velocities
Ailerons (km/h)	Rudder (km/h)	Elevators (km/h)	Radiator (km/h)
< 280	< 260	< 450	> 250

Compressor (RB/SB)
Setting 1
Optimal altitude	100% Engine power	WEP Engine power
1,829 m	850 hp	1,000 hp
Setting 2
Optimal altitude	100% Engine power	WEP Engine power
4,633 m	750 hp	882 hp

Survivability and armour

Crew1 person

Speed of destruction

Structural0 km/h

Gear290 km/h

The CW-21 is about as fragile as it looks as far as combat damage is concerned. It does not have any sort of armour protection whatsoever, a historical design decision to minimize weight and maximize its rate of climb. While the resulting flight performance is nothing short of spectacular, it renders the pilot very vulnerable to being knocked out, even by low-calibre machine guns. For this reason, head-ons should be avoided, and when being tailed by an enemy, evasive manoeuvres are very important. The fuel tanks are located in the wings and are at the very least self-sealing.

Upon its initial release, the CW-21 was quite infamous for having literally unbreakable wings that would stay intact after suffering critical damage, but this has since been patched. Attempting to use the wings as a melee weapon is no longer recommended.

Modifications and economy

Repair costBasic → Reference

AB167 → 211

RB364 → 460

SB444 → 562

Total cost of modifications4 450

2 700

Talisman cost300

Crew training600

Experts2 100

Aces45

Research Aces110 000

Reward for battleAB / RB / SB

10 / 30 / 60 %

100 / 100 / 100 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Research: 300 Cost: 180 55 Radiator Research: 300 Cost: 180 55 Compressor Research: 330 Cost: 200 60 Engine Research: 560 Cost: 340 100 Wings repair Research: 360 Cost: 220 65 Engine injection Research: 360 Cost: 220 65	Airframe Research: 330 Cost: 200 60 Cover Research: 360 Cost: 220 65	bmg30_belt_pack Research: 300 Cost: 180 55 bmg50_belt_pack Research: 330 Cost: 200 60 bmg30_new_gun Research: 560 Cost: 340 100 bmg50_new_gun Research: 360 Cost: 220 65

Armaments

Offensive armament

Weapon 12 x 12.7 mm M2 Browning machine gun

Ammunition400 rounds

Fire rate750 shots/min

Weapon 22 x 7.62 mm Browning machine gun

Ammunition1 000 rounds

Fire rate1 000 shots/min

The CW-21 is armed with:

• 2 x 12.7 mm Browning M2 machine guns, nose-mounted (200 rpg = 400 total)
• 2 x 7.62 mm Browning machine guns, nose-mounted (500 rpg = 1,000 total)

Usage in battles

The CW-21 should be mainly used as a fighter. Excelling in turns, acceleration, and hard-hitting guns, it is very easy to dogfight other planes at its battle rating. Your main composition will sometimes be bi-planes and some bi-planes can out turn you. However, the CW-21 against monoplanes is where it really shines. It can easily out turn other planes like the He-100 or even the He-112 which is crucial in a dogfight. The CW-21 does not have any close air support potential other than knocking out light targets like anti-aircraft artillery and armoured vehicles, so the main targets will be other planes.

The CW-21 can outclimb practically any other fighter on the battlefield. While it is a good dogfighter, it excels in diving attacks, where enemies can be eliminated in a pass or two, and if not, the extra energy advantage makes the ensuing dogfights much easier. Cruise at high altitude, pick out a target and swoop down to begin the engagement, using the great handling to stay on the target's tail. If the fight is not going as well as expected, it is not difficult to disengage and climb back to safety, though it pays to fly carefully and watch out for bullets coming in from behind.

While intercepting bombers is easy, even the weakest of defensive armaments can do a serious number on the CW-21, possibly ending the engagement abruptly with a pilot snipe. Study the layout of enemy bombers and only approach from angles that are not covered by turrets, or alternatively wait for a teammate to join in and distract the opponent's fire. Note that bringing down large aircraft can use up a large amount of the CW-21's limited ammunition supply.

Something to note is that the CW-21's incredibly lightweight (it weighs less than an I-16!) means that the energy retention after dives leaves something to be desired. The climb rate compensates for the mediocre top speed somewhat since altitude can be converted into speed, but this bonus will be quickly lost. Avoid prolonged chases against faster aircraft, otherwise one may be both unable to catch up and drained of energy.

Perhaps the only other opponent capable of giving the CW-21 a run for its money in terms of performance is the German He 100 D-1. The Heinkel also has a very good climb rate and enjoys superior speed, though it has worse manoeuvrability and inferior armament. While the CW-21 still has a better climb rate, He 100 pilots can build up speed in level flight and zoom climb to catch up, and the three 7.92 mm machine guns are still more than enough to dispatch the CW-21. Watch He 100s warily, be prepared to dodge them, and try to land a few hits - the He 100 is incredibly fragile and even a stray bullet can ruin its cooling system, forcing the pilot to return to base or burn up.

Manual Engine Control

MEC elements
Mixer	Pitch	Radiator			Supercharger	Turbocharger
		Oil	Water	Type
Controllable	Controllable Not auto controlled	Not controllable Not auto controlled	Not controllable Not auto controlled	Separate	Controllable 2 gears	Not controllable

Modules

Tier	Flight performance		Survivability	Weaponry
I	Fuselage repair	Radiator			Offensive 7 mm
II		Compressor	Airframe	Offensive 12 mm
III	Wings repair	Engine			New 7 mm MGs
IV		Engine injection	Cover	New 12 mm MGs

Pros and cons

Pros:

• Respectable firepower for the rank
• Turn rate is on par with the early Spitfires and even A6Ms
• Climb rate is very good for its rank
• Good dive characteristics - difficult to induce compression, wings will not readily break

Cons:

• Mediocre energy retention
• Not very fast
• No armour
• Ammo can run out fast with poor trigger discipline

History

The Curtiss-Wright 21 was a lightweight fighter-interceptor based on the CW-19. CW-21 designer, George A. Page, only emphasized the plane to have an incredible rate of climb and to not dogfight. It would climb away from a dogfight instead of dog-fighting. The U.S. wouldn't adopt the plane as they wanted a plane with low-level dogfight capability, and to not only excel solely in climbing. George A. Page knew this and designed the plane mainly for exporting.

Intrigued by the CW-21's performance, China looked into the CW-21 furthermore with a prototype being delivered to China. During a discussion about the CW-21, a prototype CW-21 shot down an Italian BR.20. China decided to buy some with China receiving 3 completely built CW-21's and 27 kits. Another three CW-21's were delivered to China and sent to the "Flying Tigers" group. They intended to use the CW-21 for attacking Japanese reconnaissance but ended up crashing due to poor visibility.

Meanwhile, Curtiss-Wright was developing the CW-21B. The CW-21B had inward retractable gears, instead of the gears being retracted into the fairings beneath each wing. The CW-21B also sported hydraulic control surfaces. The CW-21B did end up having a lower climb rate but did have a higher top speed. The Dutch ordered 24 CW-21B's in an effort to obtain modern aircraft, however, it was too late to receive them as they surrendered to the Germans. The Dutch ended up giving the CW-21B's to the Dutch East Indies (now Indonesia). After assembling the newly acquired CW-21B's, they started using them. They later ended up finding cracks on some of their CW-21B's and grounded them. This was due to the very lightweight construction of the CW-21B. These CW-21B's were easy prey to Japanese planes and most were destroyed on the ground as well as the few which were able to fly.

Media

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See also

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• reference to the series of the aircraft;
• links to approximate analogues of other nations and research trees.

External links

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