Difference between revisions of "J21A-1"
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{{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 == | ||
+ | <!-- ''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.'' --> | ||
+ | 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 (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. | |
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− | [[ | ||
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== 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}} |
+ | <!-- ''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. | ||
− | {| class="wikitable" style="text-align:center" | + | {| class="wikitable" style="text-align:center" width="70%" |
− | + | ! rowspan="2" | Characteristics | |
− | + | ! colspan="2" | Max Speed<br>(km/h at 4,300 m) | |
− | + | ! rowspan="2" | Max altitude<br>(metres) | |
− | ! | ||
− | |||
− | ! colspan="2" | Max Speed<br>(km/h at | ||
− | ! rowspan="2" | Max altitude<br>( | ||
! colspan="2" | Turn time<br>(seconds) | ! colspan="2" | Turn time<br>(seconds) | ||
− | ! colspan="2" | Rate of climb<br>( | + | ! colspan="2" | Rate of climb<br>(metres/second) |
− | ! rowspan="2" | Take-off run<br>( | + | ! rowspan="2" | Take-off run<br>(metres) |
|- | |- | ||
− | ! AB | + | ! AB !! RB !! AB !! RB !! AB !! RB |
− | ! RB | ||
− | ! AB | ||
− | ! RB | ||
− | ! AB | ||
− | ! RB | ||
|- | |- | ||
− | | | + | ! Stock |
+ | | 616 || 599 || rowspan="2" | {{Specs|ceiling}} || 21.0 || 21.9 || 12.6 || 12.6 || rowspan="2" | 300 | ||
|- | |- | ||
− | ! | + | ! Upgraded |
− | | | + | | 666 || 640 || 19.0 || 20.0 || 19.0 || 15.5 |
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|- | |- | ||
|} | |} | ||
==== 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 <!-- ✓ --> |
|- | |- | ||
|} | |} | ||
− | {| class="wikitable" style="text-align:center" | + | {| class="wikitable" style="text-align:center" width="50%" |
|- | |- | ||
− | ! colspan=" | + | ! colspan="7" | Limits |
|- | |- | ||
− | ! rowspan="2" | | + | ! rowspan="2" | Wings (km/h) |
− | ! rowspan="2" | Gear | + | ! rowspan="2" | Gear (km/h) |
− | ! | + | ! colspan="3" | Flaps (km/h) |
! colspan="2" | Max Static G | ! colspan="2" | Max Static G | ||
|- | |- | ||
− | ! + | + | ! Combat !! Take-off !! Landing !! + !! - |
− | ! - | ||
|- | |- | ||
− | | {{Specs|destruction| | + | | {{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 | + | ! Ailerons !! Rudder !! Elevators !! Radiator |
− | ! Rudder | ||
− | ! Elevators | ||
− | ! Radiator | ||
|- | |- | ||
− | | < | + | | < 450 || < 390 || < 420 || > 715 |
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|} | |} | ||
=== 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 122: | 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/ | + | <!-- ''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 | + | * 1 x 20 mm Akan m/41A cannon, nose-mounted (140 rpg) |
− | * 2 x 13.2 mm Akan m/39A | + | * 2 x 13.2 mm Akan m/39A machine guns, nose-mounted (350 rpg = 700 total) |
− | * 2 x 13.2 mm Akan m/39A | + | * 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. 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 == | == Usage in battles == | ||
− | ''Describe the tactics of playing in | + | <!-- ''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 pilots just beginning to learn this aircraft's flight characteristics, it is best used as a support aircraft, it is too slow to take into dives reliably and suffers from Yak-like rip speeds, without any of the benefits that the Yaks have in agility. For pilots with more experience, you can successfully push this aircraft to its limits and beyond and eliminate lesser experienced pilots in more agile aircraft or even other more experienced pilots through strong counter-manoeuvres. | ||
+ | |||
+ | Climb to about 1,000 m then use boom and zoom tactics to pick on enemies. Due to the powerful nose-mounted armaments, head-ons are quite easy. | ||
+ | |||
+ | ==== Specific Enemies Worth Noting: ==== | ||
+ | |||
+ | * [[P-47D-25]]/[[P-47D-28|28]] - The high-speed Thunderbolts are a menace in any game mode. 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 have incredibly poor turn rates and climb just as badly. The go-to tactic versus a P-47 is to turn with it in order to get on its tail then shred 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 manoeuvrability 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 (Family)|Bf 109 F series]] - The F series of Bf 109s are noteworthy adversaries whose strengths change with the model. The F-1 and F-2 will turn better than you and climb quite as well as you do. the F-4 is almost a hard counter depending on if it runs gunpods. Without gunpods, the F-4 outspeeds, outclimbs, outturns and outaccelerates the J21, outclassing it in every way. But since most F-4s carry gunpods, their decreased performance helps even the odds. Boom & Zoom the F-1 and F-2, head on the F-4 only as a last resort. | ||
=== Manual Engine Control === | === Manual Engine Control === | ||
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! rowspan="2" | Turbocharger | ! rowspan="2" | Turbocharger | ||
|- | |- | ||
− | ! Oil | + | ! Oil !! Water !! Type |
− | ! Water | ||
− | ! Type | ||
|- | |- | ||
− | | 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 |
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|} | |} | ||
=== 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 | * 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 | ||
− | * | + | * Highly effective and accurate armament layout that will tear through enemies like paper |
+ | * Can take quite a few hits and still fly reasonably well | ||
+ | * Very high energy retention | ||
+ | * Easy to land thanks to its tricycle landing gear | ||
+ | * Rear-mounted engine are less prone to take damage in head-ons | ||
'''Cons:''' | '''Cons:''' | ||
− | * Pusher aircraft, engine mounted facing rear, | + | |
+ | * Pusher aircraft, engine mounted facing rear, can be hit by tailing aircraft | ||
+ | * Fuel tanks can take damage if you pull up from a dive on an enemy plane | ||
* Required to set convergence due to wing-mounted machine guns | * Required to set convergence due to wing-mounted machine guns | ||
+ | * Agility is quite poor, it is subpar to most aircraft | ||
+ | * 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 | ||
+ | * The back of the aircraft is quite weak and most enemy fighters if they get behind will be able to destroy it causing you to spin out and crash | ||
== 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: <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).'' --> |
+ | 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 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. | ||
+ | |||
+ | === [[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 == | ||
− | ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' | + | <!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' --> |
− | < | + | |
+ | ;Skins | ||
+ | |||
+ | * [https://live.warthunder.com/feed/camouflages/?vehicle=saab_j21a_1 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.] | ||
+ | |||
+ | ;Images | ||
+ | <gallery mode="packed" heights="150"> | ||
+ | File:J21A-1 WTWallpaper 001.jpg| | ||
+ | File:J21A-1 WTWallpaper 002.jpg| | ||
+ | File:J21A-1 WTWallpaper 003.jpg| | ||
+ | File:J21A-1 WTWallpaper 004.jpg| | ||
+ | File:J21A-1 WTWallpaper 005.jpg| | ||
+ | File:J21A-1 WTWallpaper 006.jpg| | ||
+ | File:J21A-1 WTWallpaper 007.jpg| | ||
+ | File:J21A-1 WTWallpaper 008.jpg| | ||
+ | </gallery> | ||
− | + | ;Videos | |
− | + | {{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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== See also == | == See also == | ||
− | ''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;'' | * ''reference to the series of the aircraft;'' | ||
− | * ''links to approximate analogues of other nations and research trees.'' | + | * ''links to approximate analogues of other nations and research trees.'' --> |
− | + | ||
− | * [[ | + | ;Related development |
+ | |||
+ | * [[J21 (Family)]] | ||
− | ;Aircraft of comparable role | + | ;Aircraft of comparable role and configuration |
− | * | + | * [[S.O.8000 Narval]] |
== External links == | == External links == | ||
− | ''Paste links to sources and external resources, such as:'' | + | <!-- ''Paste links to sources and external resources, such as:'' |
* ''topic on the official game forum;'' | * ''topic on the official game forum;'' | ||
− | + | * ''other literature.'' --> | |
− | * ''other literature.'' | ||
− | + | * [[wt:en/news/6530-development-saab-j21a-1-nordic-exotic-en|[Devblog] SAAB J21A-1: Nordic Exotic]] | |
+ | * [https://forum.warthunder.com/index.php?/topic/474726-saab-j21a-1/ Official data sheet - more details about the performance] | ||
− | + | {{AirManufacturer Saab}} | |
+ | {{Sweden fighters}} |
Latest revision as of 10:47, 29 June 2024
This page is about the Swedish fighter J21A-1. For other versions, see J21 (Family). |
Contents
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
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
- 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
Armaments
Offensive armament
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
For pilots just beginning to learn this aircraft's flight characteristics, it is best used as a support aircraft, it is too slow to take into dives reliably and suffers from Yak-like rip speeds, without any of the benefits that the Yaks have in agility. For pilots with more experience, you can successfully push this aircraft to its limits and beyond and eliminate lesser experienced pilots in more agile aircraft or even other more experienced pilots through strong counter-manoeuvres.
Climb to about 1,000 m then use boom and zoom tactics to pick on enemies. Due to the powerful nose-mounted armaments, head-ons are quite easy.
Specific Enemies Worth Noting:
- P-47D-25/28 - The high-speed Thunderbolts are a menace in any game mode. 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 have incredibly poor turn rates and climb just as badly. The go-to tactic versus a P-47 is to turn with it in order to get on its tail then shred 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 manoeuvrability 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 Bf 109s are noteworthy adversaries whose strengths change with the model. The F-1 and F-2 will turn better than you and climb quite as well as you do. the F-4 is almost a hard counter depending on if it runs gunpods. Without gunpods, the F-4 outspeeds, outclimbs, outturns and outaccelerates the J21, outclassing it in every way. But since most F-4s carry gunpods, their decreased performance helps even the odds. Boom & Zoom the F-1 and F-2, head on the F-4 only as a last resort.
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:
- 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
- Can take quite a few hits and still fly reasonably well
- Very high energy retention
- Easy to land thanks to its tricycle landing gear
- Rear-mounted engine are less prone to take damage in head-ons
Cons:
- Pusher aircraft, engine mounted facing rear, can be hit by tailing aircraft
- Fuel tanks can take damage if you pull up from a dive on an enemy plane
- Required to set convergence due to wing-mounted machine guns
- Agility is quite poor, it is subpar to most aircraft
- 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
- The back of the aircraft is quite weak and most enemy fighters if they get behind will be able to destroy it causing you to spin out and crash
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
- Videos
See also
- Related development
- Aircraft of comparable role and configuration
External links
Swedish Aeroplane Company Ltd. (SAAB) | |
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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 |