Difference between revisions of "J21A-1"

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{{Specs-Card|code=saab_j21a_1}}
 
−
 
 
{{About
 
{{About
 
| about = Swedish fighter '''{{PAGENAME}}'''
 
| about = Swedish fighter '''{{PAGENAME}}'''
 
| usage = other versions
 
| usage = other versions
 
| link = J21 (Family)
 
| link = J21 (Family)
−
}}  
+
}}
 +
{{Specs-Card
 +
|code=saab_j21a_1
 +
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
 +
|cockpit=cockpit_saab_j21a_1.jpg
 +
}}
  
−
== 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.'' -->
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[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
+
The SAAB 21 rose from the drawing board in anticipation of World War 2. The development of this aircraft came with the need to develop a national fighter without having to rely on foreign designs like the Re.2000 and CR.42. The Saab 21's unique twin-boom layout, offering exceptional pilot visibility and easy maintenance, was chosen and fitted with a modified German Daimler-Benz DB 605 engine. Despite missing wartime action, the Saab 21 remained relevant, with over 300 produced to bolster Sweden's air defenses.
−
{{break}}
+
 
−
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.
+
Introduced in [[Update 1.95 "Northern Wind"]] along with the initial Swedish air tree, the J21A-1 is quite sluggish but a heavily durable fighter. It has a top speed of 640 km/h, courtesy of the Daimler-Benz DB 605B engine; however, the speed and manoeuvrability are not the most impressive characteristics of the aircraft: it's the weaponry it comes armed with. A total of four 13.2 mm [[Akan m/39A (13.2 mm)|Akan m/39A]] and a 20 mm [[Akan m/41A (20 mm)|Akan m/41A]] makes it a heavy firepower-reliant fighter able to eliminate any enemy aircraft with ease.
  
 
== 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. -->
+
{{Specs-Avia-Flight}}
−
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.
+
<!-- ''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 propeller-engined aircraft to ever come out of Sweden. For the time, they were underpowered, slow aircraft that were outclassed by nearly all opponents it could have faced. Its distinctive twin-boom, rear-engined fascia is easy to recognize and its performance is nothing to scoff at either, though the climb rate is poor and the engine overheats quickly when using WEP. 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. The [[Akan m/41A (20 mm)|Akan m/41A]]'s are quite powerful as well. The challenge for the pilot is to manoeuvre this aircraft into a solid shooting solution which can be difficult especially against more agile aircraft. Although suffering from a relatively low rip speed, skilled and new pilots can use this somewhat to their advantage, mainly by diving on opponents and climbing again, although this shouldn't be attempted at extreme speeds.
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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" width="70%"
−
|-
+
! rowspan="2" | Characteristics
−
! colspan="8" | Characteristics
 
−
|-
 
−
! colspan="8" | ''Stock''
 
−
|-
 
 
! colspan="2" | Max Speed<br>(km/h at 4,300 m)
 
! colspan="2" | Max Speed<br>(km/h at 4,300 m)
−
! rowspan="2" | Max altitude<br>(meters)
+
! rowspan="2" | Max altitude<br>(metres)
 
! colspan="2" | Turn time<br>(seconds)
 
! colspan="2" | Turn time<br>(seconds)
−
! colspan="2" | Rate of climb<br>(meters/second)
+
! colspan="2" | Rate of climb<br>(metres/second)
−
! rowspan="2" | Take-off run<br>(meters)
+
! rowspan="2" | Take-off run<br>(metres)
 
|-
 
|-
−
! AB
+
! AB !! RB !! AB !! RB !! AB !! RB
−
! RB
 
−
! AB
 
−
! RB
 
−
! AB
 
−
! RB
 
 
|-
 
|-
−
| 616 || 599 || {{Specs|ceiling}} || 21.0 || 21.9 || 12.6 || 12.6 || 300
+
! Stock
 +
| 616 || 599 || rowspan="2" | {{Specs|ceiling}} || 21.0 || 21.9 || 12.6 || 12.6 || rowspan="2" | 300
 
|-
 
|-
−
! colspan="8" | ''Upgraded''
+
! Upgraded
−
|-
+
| 666 || 640 || 19.0 || 20.0 || 19.0 || 15.5
−
! colspan="2" | Max Speed<br>(km/h at 4,300 m)
 
−
! rowspan="2" | Max altitude<br>(meters)
 
−
! colspan="2" | Turn time<br>(seconds)
 
−
! colspan="2" | Rate of climb<br>(meters/second)
 
−
! rowspan="2" | Take-off run<br>(meters)
 
−
|-
 
−
! AB
 
−
! RB
 
−
! AB
 
−
! RB
 
−
! AB
 
−
! RB
 
−
|-
 
−
| 666 || 640 || {{Specs|ceiling}} || 19.0 || 20.0 || 19.0 || 15.5 || 300
 
 
|-
 
|-
 
|}
 
|}
  
 
==== Details ====
 
==== Details ====
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
 
! colspan="5" | Features
 
! colspan="5" | Features
 
|-
 
|-
−
! Combat flaps
+
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear
−
! Take-off flaps
 
−
! Landing flaps
 
−
! Air brakes
 
−
! Arrestor gear
 
 
|-
 
|-
−
|✓
+
| ✓ || ✓ || ✓ || X || X    <!-- ✓ -->
−
|✓
 
−
|✓
 
−
| X || X    <!-- ✓ -->
 
 
|-
 
|-
 
|}
 
|}
  
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
−
! colspan="5" | Limits
+
! colspan="7" | Limits
 
|-
 
|-
−
! rowspan="2" | Wing-break speed<br>(km/h)
+
! rowspan="2" | Wings (km/h)
−
! rowspan="2" | Gear limit<br>(km/h)
+
! rowspan="2" | Gear (km/h)
−
! rowspan="2" | Combat flaps<br>(km/h)
+
! colspan="3" | Flaps (km/h)
 
! colspan="2" | Max Static G
 
! colspan="2" | Max Static G
 
|-
 
|-
−
! +
+
! Combat !! Take-off !! Landing !! + !! -
−
! -
 
 
|-
 
|-
−
| 683<!--{{Specs|destruction|constructions}}--> || 355<!--{{Specs|destruction|chassis}}--> || 466 || ~?? || ~??
+
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 445 || 425 || 325 || ~11 || ~5
 
|-
 
|-
 
|}
 
|}
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{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
−
! colspan="4" | Optimal velocities
+
! colspan="4" | Optimal velocities (km/h)
−
|-
 
−
! Ailerons<br>(km/h)
 
−
! Rudder<br>(km/h)
 
−
! Elevators<br>(km/h)
 
−
! Radiator<br>(km/h)
 
−
|-
 
−
| < ??? || < ??? || < ??? || > ???
 
−
|-
 
−
|}
 
−
[[File:J21 Armour Plating.png|450px|thumb|right|Protective components found in the '''{{PAGENAME}}'''.]]
 
−
{| class="wikitable" style="text-align:center"
 
−
|-
 
−
! colspan="3" | Compressor (RB/SB)
 
−
|-
 
−
! colspan="3" | Setting 1
 
 
|-
 
|-
−
! Optimal altitude
+
! Ailerons !! Rudder !! Elevators !! Radiator
−
! 100% Engine power
 
−
! WEP Engine power
 
 
|-
 
|-
−
| ?,??? m || ??? hp || N/A
+
| < 450 || < 390 || < 420 || > 715
 
|-
 
|-
 
|}
 
|}
  
 
=== Survivability and armour ===
 
=== Survivability and armour ===
−
<!--''Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.''-->
+
[[File:J21 Armour Plating.png|450px|thumb|right|Protective components found in the '''{{PAGENAME}}'''.]]
 +
{{Specs-Avia-Armour}}
 +
<!-- ''Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.'' -->
  
 
* 10 mm steel - Firewall armour plate
 
* 10 mm steel - Firewall armour plate
Line 128: Line 85:
 
* 10 mm steel - Pilot's back armour plate
 
* 10 mm steel - Pilot's back armour plate
 
* 60 mm bulletproof glass
 
* 60 mm bulletproof glass
 +
* Engine fire system (EFS)
 +
 +
=== Modifications and economy ===
 +
{{Specs-Economy}}
  
 
== Armaments ==
 
== Armaments ==
 +
{{Specs-Avia-Armaments}}
 
=== Offensive armament ===
 
=== Offensive armament ===
−
<!--''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.''-->
+
{{Specs-Avia-Offensive}}
−
{{main|Akan m/39A (13.2 mm)|Akan m/41A (20 mm)}}
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<!-- ''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.'' -->
 +
{{main|Akan m/41A (20 mm)|Akan m/39A (13.2 mm)}}
  
 
The '''''{{PAGENAME}}''''' is armed with:
 
The '''''{{PAGENAME}}''''' is armed with:
  
−
* 1 x 20 mm Akan m/41A autocannon, nose-mounted (140 Rounds)
+
* 1 x 20 mm Akan m/41A cannon, nose-mounted (140 rpg)
−
* 2 x 13.2 mm Akan m/39A heavy machine guns, wing-mounted (325 RPG)
+
* 2 x 13.2 mm Akan m/39A machine guns, nose-mounted (350 rpg = 700 total)
−
* 2 x 13.2 mm Akan m/39A heavy machine guns, nose-mounted (350 RPG)
+
* 2 x 13.2 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)
  
−
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 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. When stock, the cannon is very inaccurate and overheats quickly, but becomes quite accurate after modifications.
  
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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.  
+
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 converts them from just being a nuisance to a threat to be heeded. 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). -->
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<!-- ''Describe the tactics of playing in the aircraft, the features of using aircraft 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.
+
The J21A-1 (along with the rest of the J21A variants) is an excellent energy fighter. The plane retains and gains speed very well, as long as it is flying in a straight line. In level flight or in a dive, the J21A is very fast and can outrun most of its opponents. Additionally, it can maneuver quite well compared to some of its opponents but pilots must watch to ensure their speed does not drop too low as this makes the J21A an easy target. The nose-mounted armament makes it possible to successfully fight head-on with opponents and the 20 mm cannon is especially devastating when combined with the 13.2 mm machine guns. This armament also makes the J21A good as a bomber-interceptor since it can knock out critical components of an opponent's aircraft very quickly.
 +
 
 +
Overall, the J21A was designed (and should be used) as an interceptor. One excellent tactic is to climb at about 20 degrees until reaching 4,000-5,000 m and operating from that altitude in a boom-and-zoom role. This enables the J21A to use its excellent dive speed and heavy armament to maximum effect.
  
−
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.
+
Another effective tactic is to fly level and fast at medium altitude 2,000-3,000 m and act as a support fighter, assisting team mates who are overwhelmed by picking off some of their opponents in hit-and-run attacks. While the J21 can maneuver quite well (especially with combat flaps) it is not advisable to do this except as a last resort because the aircraft bleeds speed very rapidly. Also, this can expose the J21's engine (mounted in the rear of the aircraft) to and an enemy, allowing him the opportunity to knock out the J21's engine or hit its fuel tank (centrally located between the cockpit and the engine). This is another reason to avoid running away from an opponent, except when you can dive faster than the enemy or outclimb him. Many planes at the J21's level can keep up with it, although many also cannot. As long as you know your opponent and their capabilities, you can use the J21 very effectively.
  
−
==== Specific Enemies Worth Noting: ====
+
Although the J21 can be set on fire rather easily due to its centrally located fuel tank, it is often possible to put out the fire by diving very steeply and fast. This creates enough of a slipstream around the fuselage to often put out the fire.
  
−
* [[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.
+
A enemy worth noting is the F-82E which is equipped with 6 12.7 mm M3 Browning machine guns which could provide a formidable foe that could take out the J21A quickly with just a few bursts, and its payload is superior to the J21 variants, which could result in a quick death when going head on with one. Another plane of interest that needs not be ignored is the XP-50, which has an airspawn and will most likely have an energy advantage over you, be careful while dealing with such planes.  
−
* [[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 ===
Line 167: Line 130:
 
! rowspan="2" | Turbocharger
 
! rowspan="2" | Turbocharger
 
|-
 
|-
−
! Oil
+
! Oil !! Water !! Type
−
! Water
 
−
! Type
 
 
|-
 
|-
−
| Not controllable || rowspan="2" | Not controllable<br>Not auto controlled || rowspan="2" | Not controllable<br>Auto control available || rowspan="2" | Not controllable<br>Auto control available || rowspan="2" | Separate || rowspan="2" | Not controllable<br>1 gear || rowspan="2" | Not controllable
+
| Not controllable || Controllable<br>Auto control available || Controllable<br>Auto control available || Controllable<br>Auto control available || Separate || Not controllable<br>1 gear || Not controllable
−
|-
 
−
|}
 
−
 
 
−
=== Modules ===
 
−
{| class="wikitable"
 
−
! colspan="1" | Tier
 
−
! colspan="2" | Flight performance
 
−
! colspan="1" | Survivability
 
−
! colspan="2" | 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 and cons ===
−
<!--''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".''-->
+
<!-- ''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".'' -->
  
 
'''Pros:'''
 
'''Pros:'''
  
−
* Very stable, does not stall in level flight even with the throttle set to zero
+
* Heavy armament with excellent ammunition belts, with most of it being nose-mounted
−
* Engine protected from head-on attacks
+
* Retains controllability at all speeds, even when stalling
−
* Highly effective and accurate armament layout that will tear through enemies like paper
+
* Can pull high AoA for quick snapshots
−
* 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:'''
 
'''Cons:'''
  
−
* Pusher aircraft, engine mounted facing rear, exposed to enemy aircraft which may follow
+
* Loses energy rapidly in sharp turns
−
* Required to set convergence due to wing-mounted machine guns
+
* Engine overheats during takeoff and during flight at WEP even with full modifications
−
* Despite above-average agility, it will still be unable to turn with many of the fighters it comes across
+
* Very low rip speed - cannot push past 640 km/h (400 mph) without threatening to rip off wings
  
 
== 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: 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). -->
+
<!-- ''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></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. 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).'' -->
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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.  
+
The SAAB 21 is a twin-boom pusher fighter and attacker designed by the famed Swedish engineer Frid Wänström, 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 the 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.
+
Meanwhile, Swedish corporation SAAB began studying designs for the 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.  
+
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.
 
The type was delivered in 1945, and a total of 300 models were produced.
 +
 +
=== [[wt:en/news/6530-development-saab-j21a-1-nordic-exotic-en|Devblog]] ===
 +
In 1941, Sweden started a domestic rearmament program in order to bolster the strength of its armed forces in an effort to ensure its neutrality during the ongoing war. Among the branches intended for reinforcement was the Swedish Air Force, which up until this point had mainly been operating foreign, partially outdated aircraft.
 +
 +
The SAAB company had already been working on a design study for a modern fighter aircraft since the early 1940s. Their project had a rather unorthodox design - a single-engine, twin-boom aircraft in a pusher configuration. With the arrival of the 1941 rearmament program, sparking a great interest for domestic aircraft production, SAAB began working on refining their design for mass production.
 +
 +
After further work, three full prototypes were constructed for testing, two of which were fully functional. In July 1943, the prototype of the SAAB 21 first took to the skies for its maiden flight. Production of the SAAB 21 began some time after its maiden flight, with the first aircraft reaching their units in December 1945.
 +
 +
Overall, over 50 J21A-1s were produced before production of the first model stopped by December 1946. In total however, close to 300 piston-engined J21s of all variants were produced before the production run of the type ended in 1949.
 +
 +
Due to the J21's introduction to service coinciding with the dawn of the jet age, the type didn't remain in active service for too long. In fact, the J21 was retired in 1954 - some ten years after its initial introduction - and its only operator remains the Swedish Air Force.
  
 
== Media ==
 
== Media ==
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{{Youtube-gallery|F2XyFpa4YEE|'''The King from Above! J21A-1 - Sweden - Review!!''' - ''Jengar''|f_fK6YbMH_Y|'''THE Must-Have Swedish Plane: J21A-1''' - ''Spit_flyer''}}
  
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;Videos-->
 
 
== See also ==
 
== See also ==
−
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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<!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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* ''reference to the series of the aircraft;''
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* ''links to approximate analogues of other nations and research trees.'' -->
  
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* [[J21 (Family)]]: The family the A-1 belongs to.
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;Related development
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<!--;Related development
 
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* [[?-?? (Family)]]
 
  
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;Aircraft of comparable role, configuration and era
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* [[J21 (Family)]]
  
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* Airplane manufacture name [[Airplane name]]-->
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;Aircraft of comparable role and configuration
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* [[S.O.8000 Narval]]
  
 
== External links ==
 
== External links ==
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* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
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* ''encyclopedia page on the aircraft;''
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* ''other literature.'' -->
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* ''other literature.''-->
 
  
 
* [[wt:en/news/6530-development-saab-j21a-1-nordic-exotic-en|[Devblog] SAAB J21A-1: Nordic Exotic]]
 
* [[wt:en/news/6530-development-saab-j21a-1-nordic-exotic-en|[Devblog] SAAB J21A-1: Nordic Exotic]]
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* [https://forum.warthunder.com/index.php?/topic/474726-saab-j21a-1/ Official data sheet - more details about the performance]
  
 
{{AirManufacturer Saab}}
 
{{AirManufacturer Saab}}
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{{Template:Sweden_fighters}}
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{{Sweden fighters}}
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[[Category:Sweden aircraft]]
 

Latest revision as of 03:44, 14 November 2024

Rank VI | Premium | Golden Eagles
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This page is about the Swedish fighter J21A-1. For other versions, see J21 (Family).
J21A-1
saab_j21a_1.png
GarageImage J21A-1.jpg
360://https://wiki.warthunder.com/images/1/1f/Cockpit_saab_j21a_1.jpg
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

Description

The SAAB 21 rose from the drawing board in anticipation of World War 2. The development of this aircraft came with the need to develop a national fighter without having to rely on foreign designs like the Re.2000 and CR.42. The Saab 21's unique twin-boom layout, offering exceptional pilot visibility and easy maintenance, was chosen and fitted with a modified German Daimler-Benz DB 605 engine. Despite missing wartime action, the Saab 21 remained relevant, with over 300 produced to bolster Sweden's air defenses.

Introduced in Update 1.95 "Northern Wind" along with the initial Swedish air tree, the J21A-1 is quite sluggish but a heavily durable fighter. It has a top speed of 640 km/h, courtesy of the Daimler-Benz DB 605B engine; however, the speed and manoeuvrability are not the most impressive characteristics of the aircraft: it's the weaponry it comes armed with. A total of four 13.2 mm Akan m/39A and a 20 mm Akan m/41A makes it a heavy firepower-reliant fighter able to eliminate any enemy aircraft with ease.

General info

Flight performance

Max speed
at 4 300 m640 km/h
Turn time20 s
Max altitude10 800 m
EngineDaimler-Benz DB-605B
TypeInline
Cooling systemWater
Take-off weight5 t

The J21 series is arguably the most iconic propeller-engined aircraft to ever come out of Sweden. For the time, they were underpowered, slow aircraft that were outclassed by nearly all opponents it could have faced. Its distinctive twin-boom, rear-engined fascia is easy to recognize and its performance is nothing to scoff at either, though the climb rate is poor and the engine overheats quickly when using WEP. 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. The Akan m/41A's are quite powerful as well. The challenge for the pilot is to manoeuvre this aircraft into a solid shooting solution which can be difficult especially against more agile aircraft. Although suffering from a relatively low rip speed, skilled and new pilots can use this somewhat to their advantage, mainly by diving on opponents and climbing again, although this shouldn't be attempted at extreme speeds.

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

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
✓ ✓ ✓ X X
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
683 325 445 425 325 ~11 ~5
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 450 < 390 < 420 > 715

Survivability and armour

Protective components found in the J21A-1.
Crew1 person
Speed of destruction
Structural683 km/h
Gear325 km/h
  • 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
  • Engine fire system (EFS)

Modifications and economy

Repair costBasic → Reference
AB1 891 → 2 581 Sl icon.png
RB4 163 → 5 682 Sl icon.png
SB5 264 → 7 185 Sl icon.png
Total cost of modifications40 500 Rp icon.png
78 400 Sl icon.png
Talisman cost1 400 Ge icon.png
Crew training45 000 Sl icon.png
Experts155 000 Sl icon.png
Aces820 Ge icon.png
Research Aces440 000 Rp icon.png
Reward for battleAB / RB / SB
90 / 200 / 420 % Sl icon.png
160 / 160 / 160 % Rp icon.png
Modifications
Flight performance Survivability Weaponry
Mods aerodinamic fuse.png
Fuselage repair
Research:
2 700 Rp icon.png
Cost:
5 200 Sl icon.png
190 Ge icon.png
Mods radiator.png
Radiator
Research:
2 700 Rp icon.png
Cost:
5 200 Sl icon.png
190 Ge icon.png
Mods armor frame.png
Airframe
Research:
3 000 Rp icon.png
Cost:
5 800 Sl icon.png
210 Ge icon.png
Mods compressor.png
Compressor
Research:
3 000 Rp icon.png
Cost:
5 800 Sl icon.png
210 Ge icon.png
Mods aerodinamic wing.png
Wings repair
Research:
3 400 Rp icon.png
Cost:
6 600 Sl icon.png
240 Ge icon.png
Mods new engine.png
Engine
Research:
3 400 Rp icon.png
Cost:
6 600 Sl icon.png
240 Ge icon.png
Mods armor cover.png
Cover
Research:
3 300 Rp icon.png
Cost:
6 400 Sl icon.png
230 Ge icon.png
Mods metanol.png
Engine injection
Research:
3 300 Rp icon.png
Cost:
6 400 Sl icon.png
230 Ge icon.png
Mods engine extinguisher.png
EFS
Research:
3 300 Rp icon.png
Cost:
6 400 Sl icon.png
230 Ge icon.png
Mods ammo.png
akan_m47_belt_pack
Research:
2 700 Rp icon.png
Cost:
5 200 Sl icon.png
190 Ge icon.png
Mod arrow 1.png
Mods ammo.png
13_2_akan_m39_belt_pack
Research:
3 000 Rp icon.png
Cost:
5 800 Sl icon.png
210 Ge icon.png
Mod arrow 1.png
Mods weapon.png
akan_m47_new_gun
Research:
3 400 Rp icon.png
Cost:
6 600 Sl icon.png
240 Ge icon.png
Mods weapon.png
13_2_akan_m39_new_gun
Research:
3 300 Rp icon.png
Cost:
6 400 Sl icon.png
230 Ge icon.png

Armaments

Offensive armament

Weapon 120 mm Akan m/41A cannon
Ammunition140 rounds
Fire rate630 shots/min
Weapon 24 x 13.2 mm Akan m/39A machine gun
Ammunition1 350 rounds
Fire rate1 080 shots/min
Main articles: Akan m/41A (20 mm), Akan m/39A (13.2 mm)

The J21A-1 is armed with:

  • 1 x 20 mm Akan m/41A cannon, nose-mounted (140 rpg)
  • 2 x 13.2 mm Akan m/39A machine guns, nose-mounted (350 rpg = 700 total)
  • 2 x 13.2 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)

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. 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 converts them from just being a nuisance to a threat to be heeded. 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

The J21A-1 (along with the rest of the J21A variants) is an excellent energy fighter. The plane retains and gains speed very well, as long as it is flying in a straight line. In level flight or in a dive, the J21A is very fast and can outrun most of its opponents. Additionally, it can maneuver quite well compared to some of its opponents but pilots must watch to ensure their speed does not drop too low as this makes the J21A an easy target. The nose-mounted armament makes it possible to successfully fight head-on with opponents and the 20 mm cannon is especially devastating when combined with the 13.2 mm machine guns. This armament also makes the J21A good as a bomber-interceptor since it can knock out critical components of an opponent's aircraft very quickly.

Overall, the J21A was designed (and should be used) as an interceptor. One excellent tactic is to climb at about 20 degrees until reaching 4,000-5,000 m and operating from that altitude in a boom-and-zoom role. This enables the J21A to use its excellent dive speed and heavy armament to maximum effect.

Another effective tactic is to fly level and fast at medium altitude 2,000-3,000 m and act as a support fighter, assisting team mates who are overwhelmed by picking off some of their opponents in hit-and-run attacks. While the J21 can maneuver quite well (especially with combat flaps) it is not advisable to do this except as a last resort because the aircraft bleeds speed very rapidly. Also, this can expose the J21's engine (mounted in the rear of the aircraft) to and an enemy, allowing him the opportunity to knock out the J21's engine or hit its fuel tank (centrally located between the cockpit and the engine). This is another reason to avoid running away from an opponent, except when you can dive faster than the enemy or outclimb him. Many planes at the J21's level can keep up with it, although many also cannot. As long as you know your opponent and their capabilities, you can use the J21 very effectively.

Although the J21 can be set on fire rather easily due to its centrally located fuel tank, it is often possible to put out the fire by diving very steeply and fast. This creates enough of a slipstream around the fuselage to often put out the fire.

A enemy worth noting is the F-82E which is equipped with 6 12.7 mm M3 Browning machine guns which could provide a formidable foe that could take out the J21A quickly with just a few bursts, and its payload is superior to the J21 variants, which could result in a quick death when going head on with one. Another plane of interest that needs not be ignored is the XP-50, which has an airspawn and will most likely have an energy advantage over you, be careful while dealing with such planes.

Manual Engine Control

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

Pros and cons

Pros:

  • Heavy armament with excellent ammunition belts, with most of it being nose-mounted
  • Retains controllability at all speeds, even when stalling
  • Can pull high AoA for quick snapshots

Cons:

  • Loses energy rapidly in sharp turns
  • Engine overheats during takeoff and during flight at WEP even with full modifications
  • Very low rip speed - cannot push past 640 km/h (400 mph) without threatening to rip off wings

History

The SAAB 21 is a twin-boom pusher fighter and attacker designed by the famed Swedish engineer Frid Wänström, 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 the 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 the 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.

Devblog

In 1941, Sweden started a domestic rearmament program in order to bolster the strength of its armed forces in an effort to ensure its neutrality during the ongoing war. Among the branches intended for reinforcement was the Swedish Air Force, which up until this point had mainly been operating foreign, partially outdated aircraft.

The SAAB company had already been working on a design study for a modern fighter aircraft since the early 1940s. Their project had a rather unorthodox design - a single-engine, twin-boom aircraft in a pusher configuration. With the arrival of the 1941 rearmament program, sparking a great interest for domestic aircraft production, SAAB began working on refining their design for mass production.

After further work, three full prototypes were constructed for testing, two of which were fully functional. In July 1943, the prototype of the SAAB 21 first took to the skies for its maiden flight. Production of the SAAB 21 began some time after its maiden flight, with the first aircraft reaching their units in December 1945.

Overall, over 50 J21A-1s were produced before production of the first model stopped by December 1946. In total however, close to 300 piston-engined J21s of all variants were produced before the production run of the type ended in 1949.

Due to the J21's introduction to service coinciding with the dawn of the jet age, the type didn't remain in active service for too long. In fact, the J21 was retired in 1954 - some ten years after its initial introduction - and its only operator remains the Swedish Air Force.

Media

Skins
Images
  • J21A-1 WTWallpaper 001.jpg
  • J21A-1 WTWallpaper 002.jpg
  • J21A-1 WTWallpaper 003.jpg
  • J21A-1 WTWallpaper 004.jpg
  • J21A-1 WTWallpaper 005.jpg
  • J21A-1 WTWallpaper 006.jpg
  • J21A-1 WTWallpaper 007.jpg
  • J21A-1 WTWallpaper 008.jpg
Videos
The King from Above! J21A-1 - Sweden - Review!! - Jengar
THE Must-Have Swedish Plane: J21A-1 - Spit_flyer

See also

Related development
Aircraft of comparable role and configuration

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 · 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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