Difference between revisions of "J21A-1"

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== Description ==  
 
== Description ==  
−
''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.''
+
<!-- In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about. -->
 
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
 
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
 
{{break}}
 
{{break}}
−
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]].
+
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]] along with the rest of the Swedish air tree.
  
 
== General info ==
 
== General info ==
 
=== Flight performance ===
 
=== Flight performance ===
−
''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.''
+
<!-- Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle. -->
 +
The J21 series is arguably the most iconic propellor-engined aircraft to ever come out of Sweden. Its distinctive twin-boom, rear-engined facia is easy to recognize and its performance is nothing to scoff at either. Its high speed, excellent energy retention and reasonable acceleration along with surprising agility allows a single J21 to dictate the flow of the battle. One might think that the excellent performance comes at the cost of weaponry or ammunition, but they would be sorely mistaken when assuming that is the case for the J21. The [[Akan m/39A (13.2 mm)|Akan m/39A]]'s are some of the most effective non-cannon aircraft weaponry in the game, boasting superior aspects to even the famed [[M2 Browning (12.7 mm)|M2 Browning]] - Specifically in terms of raw stopping power and muzzle velocity - and their [[Akan m/41A (20 mm)|Akan m/41A]] is quite powerful as well. Underestimating a J21 will result in a burning plane and a free trip back to the hangar.
 +
 
 +
All-in-All, the J21A-1 is a very effective platform when used to its strengths, able to reliably beat most things it comes across.
  
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
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! colspan="8" | ''Stock''
 
! colspan="8" | ''Stock''
 
|-
 
|-
−
! colspan="2" | Max Speed<br>(km/h at ?,??? m)
+
! colspan="2" | Max Speed<br>(km/h at 4,300 m)
 
! rowspan="2" | Max altitude<br>(meters)
 
! rowspan="2" | Max altitude<br>(meters)
 
! colspan="2" | Turn time<br>(seconds)
 
! colspan="2" | Turn time<br>(seconds)
Line 53: Line 56:
 
! RB
 
! RB
 
|-
 
|-
−
| 666 || 640 || {{Specs|ceiling}} || 19.0 || 20.0 || 19.0 || 15,5 || 300
+
| 666 || 640 || {{Specs|ceiling}} || 19.0 || 20.0 || 19.0 || 15.5 || 300
 
|-
 
|-
 
|}
 
|}
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The '''''{{PAGENAME}}''''' is armed with:
 
The '''''{{PAGENAME}}''''' is armed with:
  
−
* 1 x 20 mm Akan m/41A autocannon (140 RPG)
+
* 1 x 20 mm Akan m/41A autocannon, nose-mounted (140 Rounds)
−
* 2 x 13.2 mm Akan m/39A heavy machine guns - wing mounted (325 RPG)
+
* 2 x 13.2 mm Akan m/39A heavy machine guns, wing-mounted (325 RPG)
−
* 2 x 13.2 mm Akan m/39A heavy machine guns - nose mounted (350 RPG)
+
* 2 x 13.2 mm Akan m/39A heavy machine guns, nose-mounted (350 RPG)
 +
 
 +
The '''automatkanon m/41A''' is essentially a slower firing [[Hispano 404 (20 mm)|Hispano 404]] with more ammunition, with all the advantages and disadvantages that come with it. While one might think that the slower firing speed is a disadvantage, it is just high enough to still be effective and is very beneficial for conserving ammunition. It is important to note that when stock, the cannon is very inaccurate and overheats quickly, but becomes quite accurate after modifications.
 +
 
 +
The complimentary '''automatkanon m/39A''' heavy machine guns are, as mentioned previously, arguably the best non-cannon weapons in the game. Their high muzzle velocity, VERY high fire rate and reasonable accuracy allow them to saturate the sky with lead. The higher calibre of 13.2 mm allows for more stopping power than the typical 12.7 mm, and turns them from a nuisance to a threat. It is interesting to note that due to their HEF-T rounds, they technically fall under the category of "cannon", as normally exploding rounds typically start at 20 mm.
  
 
== Usage in battles ==
 
== 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).''
+
<!-- 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). -->
 +
For lack of a better term, the J21 series are very good face-punchers; they are excellent aircraft when it comes to '''head-to-head combat''' as they are able to reliably take down enemy aircraft from a distance and dodge returning fire thanks to its solid roll rate and agility. Alternatively, they can be employed as quite effective '''energy fighters''' as a result of their solid climb rate and ample energy retention, but one must take care as the common stall-fighting exposes the pilot's engine to damage. Another possible flying style is as a '''bomber interceptor''', as your reasonable climb rate and solid performance at bomber altitudes will allow you to catch them quickly and your excellent guns will shred them quite easily. When attacking a bomber, make sure to focus on the wings and engines, or try to head-on it so you can snipe the pilot.
 +
 
 +
Your ideal altitude should be around 4,000 m ~ 6,000 m as this altitude allows you to pick your fights reliably and offers the best performance for the aircraft.
 +
 
 +
==== Specific Enemies Worth Noting: ====
 +
 
 +
* [[P-47D-25]]/[[P-47D-28|28]]. The high speed Thunderbolts are a menace in any gamemode. They are some of the fastest things in the bracket and sport an octet of the late M2 Brownings that will set you ablaze in a few short bursts. While they are already quick at medium altitudes, they become even faster at high altitudes, easily blitzing past the poor J21. However, they turn incredibly poorly and climb just as bad. The go-to tactic versus a P-47 is to turn with it in order to get on its tail then melt it with your guns.
 +
* [[M.B.157]]. The 157 is one of the worst enemies you can come across as it is basically a Thunderbolt that can turn and climb. Its ludicrous speed along with excellent climb rate and its above-average maneuverability make for an enemy that you cannot face in a 1-on-1. Your best bet is to try to head-on it if you can manage to do so. The one achilles heel of the 157 is its low ammunition count, so try to get it to waste as much ammo as possible before it needs to disengage. At this point you can either try to gun it down or attempt to regain altitude so you may catch it later.
 +
* [[Bf 109 F-1|Bf]] [[Bf 109 F-2|109]] [[Bf 109 F-4|F]] series. The F series of 109's are noteworthy adversaries whose strengths change with the model. The F-1 and F-2 will turn better than you and climb quite well but you are quite a bit faster than them, but the F-4 is almost a hard counter depending on if it runs gunpods. Without gunpods, the F-4 outspeeds, outclimbs, outturns and out-accelerates the J21, outclassing it in every way. But since most F-4's run gunpods, their decreased performance helps even the odds. Boom-n-Zoom the F-1 and F-2, head on the F-4.
  
 
=== Manual Engine Control ===
 
=== Manual Engine Control ===
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* Very stable, does not stall in level flight even with the throttle set to zero
 
* Very stable, does not stall in level flight even with the throttle set to zero
 
* Engine protected from head-on attacks
 
* Engine protected from head-on attacks
−
* Most armament is nose-mounted
+
* Highly effective and accurate armament layout that will tear through enemies like paper
−
* Faster than most opponents, and have a great energy retention, makes it a beast using BnZ tactics.
+
* High speed and excellent energy retention makes it a beast at using BnZ tactics.
−
* Can hadle multiple hits on the fuselage
+
* Can take quite a few hits and still fly reasonably well
 +
* Solid climbing rate
 +
* Very high energy retention
 +
* Easy to land thanks to its tricycle landing gear
  
 
'''Cons:'''
 
'''Cons:'''
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* Pusher aircraft, engine mounted facing rear, exposed to enemy aircraft which may follow
 
* Pusher aircraft, engine mounted facing rear, exposed to enemy aircraft which may follow
 
* Required to set convergence due to wing-mounted machine guns
 
* Required to set convergence due to wing-mounted machine guns
−
* Poor turn rate
+
* Despite above-average agility, it will still be unable to turn with many of the fighters it comes across
  
 
== History ==
 
== History ==
−
''Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).''
+
<!-- Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable). -->
 +
The SAAB 21 is a twin-boom pusher fighter and attacker designed by the famed Swedish civil engineer Frid Wänström (pronounced "Vanstorm"), who also worked on the SAAB 29 ''Tunnan'', 32 ''Lansen'', 35 ''Draken'' and 37 ''Viggen''. In the anticipation and wake of World War 2, Sweden was concerned over its neutrality policy coming under threat by the other European countries, specifically hostile ones such as Nazi Germany. In order to deter belligerent forces and potential aggressors, the Swedish Air Force created a major plan to modernize their fleet, which included import of foreign models such as the Italian [[J11|CR.42]] and [[J20|Re.2000]] as a stopgap measure.
 +
 
 +
Meanwhile, Swedish corporation SAAB began studying designs for a possible development of a new, high performance fighter aircraft. Most of the designs were based around the Bristol Taurus two-row 14 cylinder radial engine developing around 1,000~1,100 horsepower. The most promising design was a twin-boom pusher layout and made use of many new features unfamiliar to the SAAB technicians and engineers at the time, but was able to compete with the other fighter aircraft at the time while also maintaining several advantages such as a heavy amount of nose mounted armament and superior pilot visibility, along with ease of maintenance. The design was kept dormant until 41, as Sweden was beginning to see that it would not be able to procure improved foreign models as a result of the war, they started another rearmament program to adopt advanced indigenous fighter aircraft.
 +
 
 +
Accordingly, SAAB blew the dust off of their old twin-boom design and set to work. Earlier on, it was decided to replace the Bristol Taurus with an American Pratt-&-Whitney Twin Wasp, but this was changed when the engine manufacturer ''Svenska'' was requested to provide an alternative engine, which was difficult due to the time constraints. Thus, they decided that a licensed engine would be the best course of action. The legendary German Daimler-Benz DB 605 that powered many famous designs was chosen and modified to fit Swedish needs. Three prototypes were completed and its maiden flight was completed in 1942.
 +
 
 +
The type was delivered in 1945, and a total of 300 models were produced.
  
 
== Media ==
 
== Media ==
Line 231: Line 257:
 
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
 
''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;''
+
* [[J21 (Family)]]: The family the A-1 belongs to.
−
* ''links to approximate analogues of other nations and research trees.''
 
 
<!--;Related development
 
<!--;Related development
 
* [[?-?? (Family)]]
 
* [[?-?? (Family)]]

Revision as of 20:37, 25 March 2020

Rank VI | Premium | Golden Eagles
Chinese A-5C Pack
J21A-1
saab_j21a_1.png
J21A-1
Sweden flag.png Sweden
IV Rank
Battle rating:
AB RB SB
5.3 4.3 3.3
Class:
Research:46 000 Specs-Card-Exp.png
Purchase:155 000 Specs-Card-Lion.png
Show in game
This page is about the Swedish fighter J21A-1. For other versions, see J21 (Family).

Description

GarageImage J21A-1.jpg


The J21A-1 is a rank IV Swedish fighter with a battle rating of 5.3 (AB), 4.3 (RB), and 3.3 (SB). It was introduced in Update 1.95 "Northern Wind" along with the rest of the Swedish air tree.

General info

Flight performance

The J21 series is arguably the most iconic propellor-engined aircraft to ever come out of Sweden. Its distinctive twin-boom, rear-engined facia is easy to recognize and its performance is nothing to scoff at either. Its high speed, excellent energy retention and reasonable acceleration along with surprising agility allows a single J21 to dictate the flow of the battle. One might think that the excellent performance comes at the cost of weaponry or ammunition, but they would be sorely mistaken when assuming that is the case for the J21. The Akan m/39A's are some of the most effective non-cannon aircraft weaponry in the game, boasting superior aspects to even the famed M2 Browning - Specifically in terms of raw stopping power and muzzle velocity - and their Akan m/41A is quite powerful as well. Underestimating a J21 will result in a burning plane and a free trip back to the hangar.

All-in-All, the J21A-1 is a very effective platform when used to its strengths, able to reliably beat most things it comes across.

Characteristics
Stock
Max Speed
(km/h at 4,300 m) 		Max altitude
(meters) 		Turn time
(seconds) 		Rate of climb
(meters/second) 		Take-off run
(meters)
AB RB AB RB AB RB
616 599 10800 21.0 21.9 12.6 12.6 300
Upgraded
Max Speed
(km/h at 4,300 m) 		Max altitude
(meters) 		Turn time
(seconds) 		Rate of climb
(meters/second) 		Take-off run
(meters)
AB RB AB RB AB RB
666 640 10800 19.0 20.0 19.0 15.5 300

Details

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
+ -
683 355 466 ~?? ~??
Optimal velocities
Ailerons
(km/h) 		Rudder
(km/h) 		Elevators
(km/h) 		Radiator
(km/h)
< ??? < ??? < ??? > ???
Protective components found in the J21A-1.
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
 ?,??? m  ??? hp N/A

Survivability and armour

  • 10 mm steel - Firewall armour plate
  • 10 mm steel - Firewall cover armour plate
  • 10 mm steel - Pilot's back armour plate
  • 60 mm bulletproof glass

Armaments

Offensive armament

Main articles: Akan m/39A (13.2 mm), Akan m/41A (20 mm)

The J21A-1 is armed with:

  • 1 x 20 mm Akan m/41A autocannon, nose-mounted (140 Rounds)
  • 2 x 13.2 mm Akan m/39A heavy machine guns, wing-mounted (325 RPG)
  • 2 x 13.2 mm Akan m/39A heavy machine guns, nose-mounted (350 RPG)

The automatkanon m/41A is essentially a slower firing Hispano 404 with more ammunition, with all the advantages and disadvantages that come with it. While one might think that the slower firing speed is a disadvantage, it is just high enough to still be effective and is very beneficial for conserving ammunition. It is important to note that when stock, the cannon is very inaccurate and overheats quickly, but becomes quite accurate after modifications.

The complimentary automatkanon m/39A heavy machine guns are, as mentioned previously, arguably the best non-cannon weapons in the game. Their high muzzle velocity, VERY high fire rate and reasonable accuracy allow them to saturate the sky with lead. The higher calibre of 13.2 mm allows for more stopping power than the typical 12.7 mm, and turns them from a nuisance to a threat. It is interesting to note that due to their HEF-T rounds, they technically fall under the category of "cannon", as normally exploding rounds typically start at 20 mm.

Usage in battles

For lack of a better term, the J21 series are very good face-punchers; they are excellent aircraft when it comes to head-to-head combat as they are able to reliably take down enemy aircraft from a distance and dodge returning fire thanks to its solid roll rate and agility. Alternatively, they can be employed as quite effective energy fighters as a result of their solid climb rate and ample energy retention, but one must take care as the common stall-fighting exposes the pilot's engine to damage. Another possible flying style is as a bomber interceptor, as your reasonable climb rate and solid performance at bomber altitudes will allow you to catch them quickly and your excellent guns will shred them quite easily. When attacking a bomber, make sure to focus on the wings and engines, or try to head-on it so you can snipe the pilot.

Your ideal altitude should be around 4,000 m ~ 6,000 m as this altitude allows you to pick your fights reliably and offers the best performance for the aircraft.

Specific Enemies Worth Noting:

  • P-47D-25/28. The high speed Thunderbolts are a menace in any gamemode. They are some of the fastest things in the bracket and sport an octet of the late M2 Brownings that will set you ablaze in a few short bursts. While they are already quick at medium altitudes, they become even faster at high altitudes, easily blitzing past the poor J21. However, they turn incredibly poorly and climb just as bad. The go-to tactic versus a P-47 is to turn with it in order to get on its tail then melt it with your guns.
  • M.B.157. The 157 is one of the worst enemies you can come across as it is basically a Thunderbolt that can turn and climb. Its ludicrous speed along with excellent climb rate and its above-average maneuverability make for an enemy that you cannot face in a 1-on-1. Your best bet is to try to head-on it if you can manage to do so. The one achilles heel of the 157 is its low ammunition count, so try to get it to waste as much ammo as possible before it needs to disengage. At this point you can either try to gun it down or attempt to regain altitude so you may catch it later.
  • Bf 109 F series. The F series of 109's are noteworthy adversaries whose strengths change with the model. The F-1 and F-2 will turn better than you and climb quite well but you are quite a bit faster than them, but the F-4 is almost a hard counter depending on if it runs gunpods. Without gunpods, the F-4 outspeeds, outclimbs, outturns and out-accelerates the J21, outclassing it in every way. But since most F-4's run gunpods, their decreased performance helps even the odds. Boom-n-Zoom the F-1 and F-2, head on the F-4.

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Not controllable Not controllable
Not auto controlled 		Not controllable
Auto control available 		Not controllable
Auto control available 		Separate Not controllable
1 gear 		Not controllable

Modules

Tier Flight performance Survivability Weaponry
I Fuselage repair Radiator Offensive 20 mm
II Compressor Airframe Offensive 13 mm
III Wings repair Engine New 20 mm cannons
IV Engine injection Cover New 13 mm MGs

Pros and cons

Pros:

  • Very stable, does not stall in level flight even with the throttle set to zero
  • Engine protected from head-on attacks
  • Highly effective and accurate armament layout that will tear through enemies like paper
  • High speed and excellent energy retention makes it a beast at using BnZ tactics.
  • Can take quite a few hits and still fly reasonably well
  • Solid climbing rate
  • Very high energy retention
  • Easy to land thanks to its tricycle landing gear

Cons:

  • Pusher aircraft, engine mounted facing rear, exposed to enemy aircraft which may follow
  • Required to set convergence due to wing-mounted machine guns
  • Despite above-average agility, it will still be unable to turn with many of the fighters it comes across

History

The SAAB 21 is a twin-boom pusher fighter and attacker designed by the famed Swedish civil engineer Frid Wänström (pronounced "Vanstorm"), who also worked on the SAAB 29 Tunnan, 32 Lansen, 35 Draken and 37 Viggen. In the anticipation and wake of World War 2, Sweden was concerned over its neutrality policy coming under threat by the other European countries, specifically hostile ones such as Nazi Germany. In order to deter belligerent forces and potential aggressors, the Swedish Air Force created a major plan to modernize their fleet, which included import of foreign models such as the Italian CR.42 and Re.2000 as a stopgap measure.

Meanwhile, Swedish corporation SAAB began studying designs for a possible development of a new, high performance fighter aircraft. Most of the designs were based around the Bristol Taurus two-row 14 cylinder radial engine developing around 1,000~1,100 horsepower. The most promising design was a twin-boom pusher layout and made use of many new features unfamiliar to the SAAB technicians and engineers at the time, but was able to compete with the other fighter aircraft at the time while also maintaining several advantages such as a heavy amount of nose mounted armament and superior pilot visibility, along with ease of maintenance. The design was kept dormant until 41, as Sweden was beginning to see that it would not be able to procure improved foreign models as a result of the war, they started another rearmament program to adopt advanced indigenous fighter aircraft.

Accordingly, SAAB blew the dust off of their old twin-boom design and set to work. Earlier on, it was decided to replace the Bristol Taurus with an American Pratt-&-Whitney Twin Wasp, but this was changed when the engine manufacturer Svenska was requested to provide an alternative engine, which was difficult due to the time constraints. Thus, they decided that a licensed engine would be the best course of action. The legendary German Daimler-Benz DB 605 that powered many famous designs was chosen and modified to fit Swedish needs. Three prototypes were completed and its maiden flight was completed in 1942.

The type was delivered in 1945, and a total of 300 models were produced.

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:

External links


Swedish Aeroplane Company Ltd. (SAAB)
  Pre-SAAB: SA / ASJA
SA 'Jaktfalken'  J6B
SAAB 17  B17A · B17B · S17BS
SAAB 18  B18A · B18B · T18B · T18B (57)
SAAB 21  J21A-1 · J21A-2 · A21A-3 · J21RA · A21RB
SAAB 29 'Tunnan'  J29A · A29B · J29D · J29F
SAAB 32 'Lansen'  J32B · A32A · A32A Röd Adam
SAAB 35 'Draken'  J35A · J35D
SAAB 37 'Viggen'  JA37C · JA37D · JA37DI · JA37DI F21 · AJ37 · AJS37
SAAB 39 'Gripen'  JAS39A · JAS39C
SAAB 105  SK60B · SAAB-105G
License Production  B3C (Ju 86K)
Export  SAAB-105OE · J35XS · ▄JAS39C · ◔JAS39EBS HU C

Sweden fighters
ASJA  J6B
Saab  J21A-1 · J21A-2 · A21A-3
FFVS  J22-A · J22-B
Foreign Import  J8A · Iacobi's J8A · J9 Early · J11 · J20 · J26 David · J26
Finland 
VL  Mörkö-Morane · VL Myrsky II · VL Pyörremyrsky
(NL) Fokker  ▄Fokker D.XXI-3 · ▄Fokker D.XXI
(DE) Messerschmitt  ▄Bf 109 G-2 · ▄Bf 109 G-6 Erla · ▄Bf 109 G-6
Other  ▄B-239 · ▄Hurricane Mk I/L

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