Difference between revisions of "A21RB"

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{{Specs-Card|code=saab_a21rb}}
 
 
{{About
 
{{About
 
| about = Swedish jet fighter '''{{PAGENAME}}'''
 
| about = Swedish jet fighter '''{{PAGENAME}}'''
 
| usage = other versions
 
| usage = other versions
 
| link = J21 (Family)
 
| link = J21 (Family)
 +
}}
 +
{{Specs-Card
 +
|code=saab_a21rb
 +
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
 +
|cockpit=Cockpit_saab_a21rb.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.'' -->
−
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
 
−
{{Break}}
 
 
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish jet fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]].
 
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish jet fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]].
  
−
The {{PAGENAME}} is a jet-powered version of the prior [[A21A-3]], giving it higher speeds and heavier ordinance.
+
The {{PAGENAME}} is a jet-powered version of the prior [[A21A-3]], giving it higher speeds and heavier ordnance.
  
 
== General info ==
 
== General info ==
−
The {{PAGENAME}} is a highly maneuverable plane, with a good climb rate. The guns, although a downgrade from the previous propeller-driven 13mm version, provides enough firepower to down most targets efficiently. The {{PAGENAME}} is also the first to feature the iconic "Paddan" gunpod, giving it additional lead down range. Along with central-mounted rockets, the plane is comfortable in both Air Realistic and Ground Realistic battles. The only downside is the airframe, that prevents the aircraft from reaching higher speeds. This is due to the engine being a bit too powerful for the plane, making it common to rip in straight lines and shallow dives.  
+
[[File:A21RB Formation.png|left|thumb|300px|Two {{PAGENAME}} flying in formation]]
 +
The {{PAGENAME}} is a highly manoeuvrable plane, with a good climb rate. The guns, although a downgrade compared to the 13.2 mm MGs from the previous propeller-driven version, still provide enough firepower to down most targets efficiently. The {{PAGENAME}} is also the first to feature the iconic "Paddan" gunpod, giving it additional lead downrange. Along with central-mounted rockets, the plane is comfortable in both Air Realistic and Ground Realistic battles. The only downside is the airframe, which prevents the aircraft from reaching higher speeds. This is due to the engine being a bit too powerful for the plane, making it common to rip in straight lines and shallow dives.
 +
 
 +
The plane is an overall great introduction for anyone looking to learn to fly jet aircraft, as the vehicle handles very similar to its propeller-driven counterpart, while at a much higher speed than before.
  
 
=== Flight performance ===
 
=== Flight performance ===
 +
{{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.'' -->
 
<!-- ''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.'' -->
−
The {{PAGENAME}} is distinctly different in looks and performance from all other planes found at the same BR-range. Along with the Yak-15, the Saab 21R is one of the two propeller-driven planes successfully converted into jet propulsion. Just like its Soviet counterpart, the solution comes at the cost of speed. Although a lot more powerful than the A21A-3, it still has the same airframe limitations, resulting in good turn-rate. The climb-rate is also significantly improved due to the weight of the vehicle, resulting in good vertical energy with the ability to stall out slower opponents. Getting back down can prove difficult however, as the {{PAGENAME}} has a rip speed of just 850kph, which it can accidentally reach if not careful. To avoid this, the plane features a small set of air-brakes, which aids in maintaining a safe speed. Experienced pilots can find a good use for them, along with the powerful flaps, to force overshoots, or to out-turn propeller-driven opponents. Be careful with the engine however! The propulsion of the {{PAGENAME}} is very primitive, and suffers from fuel starvation during extreme maneuvers, especially in negative G-loads. This can be fatal when fighting vertically, as the engine drops all power almost immediately, and has to spool back up again before reaching the same efficiency as before.
 
  
−
{| class="wikitable" style="text-align:center"
+
The {{PAGENAME}} is distinctly different in looks and performance from all other planes found at the same BR-range. Along with the Yak-15, the Saab 21R is one of the two propeller-driven planes successfully converted into jet propulsion. Just like its Soviet counterpart, the solution comes at the cost of speed. Although a lot more powerful than the A21A-3, it still has the same airframe limitations. The climb-rate is also significantly improved due to the weight of the vehicle, resulting in good vertical energy with the ability to stall out slower opponents. Getting back down can prove difficult however, as the {{PAGENAME}} has a rip speed of just 787 km/h, which it can accidentally reach if not careful. To avoid this, the plane features a small set of air-brakes, which aids in maintaining a safe speed. Experienced pilots can find a good use for them to force overshoots, or to out-turn propeller-driven opponents. Be careful with the engine however! The propulsion of the {{PAGENAME}} is very primitive, and suffers from fuel starvation during extreme manoeuvres, especially in negative G-loads. This can be fatal when fighting vertically, as the engine drops all power almost immediately, and has to spool back up again before reaching the same efficiency as before.
 +
 
 +
{| class="wikitable" style="text-align:center" width="70%"
 
! rowspan="2" | Characteristics
 
! rowspan="2" | Characteristics
 
! colspan="2" | Max Speed<br>(km/h at 2,000 m)
 
! colspan="2" | Max Speed<br>(km/h at 2,000 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 !! RB !! AB !! RB !! AB !! RB
 
! AB !! RB !! AB !! RB !! AB !! RB
Line 40: Line 47:
  
 
==== Details ====
 
==== Details ====
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
 
! colspan="6" | Features
 
! colspan="6" | Features
Line 50: Line 57:
 
|}
 
|}
  
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
 
! colspan="7" | Limits
 
! colspan="7" | Limits
Line 61: Line 68:
 
! Combat !! Take-off !! Landing !! + !! -
 
! Combat !! Take-off !! Landing !! + !! -
 
|-
 
|-
−
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 460 || 460 || 260 || ~10 || ~5
+
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 438 || 409 || 260 || ~11 || ~5
 
|-
 
|-
 
|}
 
|}
Line 76: Line 83:
  
 
==== Engine performance ====
 
==== Engine performance ====
−
[[File:J21 Armour Plating.png|450px|thumb|right|Protective components found in the '''{{PAGENAME}}'''.]]
 
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
Line 83: Line 89:
 
|-
 
|-
 
! colspan="2" | Engine name || Number
 
! colspan="2" | Engine name || Number
−
! colspan="1" | Empty mass || colspan="2" | Wing loading (full fuel)
+
! colspan="1" | {{Annotation|Basic mass|Mass of the aircraft with pilot and engine oil, but no fuel or weapons load}} || colspan="2" | Wing loading (full fuel)
 
|-
 
|-
 
| colspan="2" | Svenska Flygmotor RM1A || 1
 
| colspan="2" | Svenska Flygmotor RM1A || 1
−
| colspan="1" | 3,505 kg || colspan="2" | 192 kg/m<sup>2</sup>
+
| colspan="1" | 3,635 kg || colspan="2" | 196 kg/m<sup>2</sup>
 
|-
 
|-
 
! colspan="3" | Engine characteristics
 
! colspan="3" | Engine characteristics
−
! colspan="2" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br />Weight
+
! colspan="2" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br>Weight
 
|-
 
|-
 
! Weight (each) || colspan="2" | Type
 
! Weight (each) || colspan="2" | Type
Line 95: Line 101:
 
|-
 
|-
 
| 705 kg || colspan="2" | Centrifugal-flow turbojet
 
| 705 kg || colspan="2" | Centrifugal-flow turbojet
−
| 3,759 kg || 4,257 kg || 5,000 kg
+
| 3,849 kg || 4,347 kg || 5,000 kg
 
|-
 
|-
−
! colspan="3" | {{Annotation|Maximum engine thrust @ 0 m (RB / SB)|The maximum thrust produced by each engine, while mounted in the aircraft. NOTE: Thrust varies significantly depending on speed & altitude.}}
+
! colspan="3" | {{Annotation|Maximum engine thrust @ 0 m (RB/SB)|The maximum thrust produced by each engine, while mounted in the aircraft. NOTE: Thrust varies significantly depending on speed & altitude.}}
 
! colspan="3" | Thrust to weight ratio @ 0 m (100%)
 
! colspan="3" | Thrust to weight ratio @ 0 m (100%)
 
|-
 
|-
Line 104: Line 110:
 
|-
 
|-
 
| ''Stationary'' || 1,420 kgf || N/A
 
| ''Stationary'' || 1,420 kgf || N/A
−
| 0.41 || 0.33 || 0.28
+
| 0.37 || 0.33 || 0.28
 
|-
 
|-
−
| ''Optimal'' || 1,420 kgf<br />(0 km/h) || N/A
+
| ''Optimal'' || 1,420 kgf<br>(0 km/h) || N/A
−
| 0.41 || 0.33 || 0.28
+
| 0.37 || 0.33 || 0.28
 
|-
 
|-
 
|}
 
|}
  
 
=== Survivability and armour ===
 
=== Survivability and armour ===
 +
{{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.'' -->
 
<!-- ''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}}'''.]]
  
 
* 10 mm steel - Firewall armour plate
 
* 10 mm steel - Firewall armour plate
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* 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)
 +
 +
Although the {{PAGENAME}} is meant for ground-attack, the plane lacks significant protection to withstand a lot of incoming fire. The pilot is well protected by metal plates and bulletproof glass, but the pilot's safety isn't the primary concern for the {{PAGENAME}}, as the tail section is incredibly vulnerable. This is due to the twin-boom design, making a tailstrike twice as likely. And since the tail connects to the wing-section, the plane tends to lose tail-control when struck by wing damage. The engine is very large in comparison to the rest of the plane, making it a common target. The {{PAGENAME}} should avoid all possible damage, as surviving large amounts of fire is highly unlikely. Pulling away from head-on engagements increases the survivability immensely. Avoiding the enemy airfield is also important, as the {{PAGENAME}} lacks the speed to keep it safe from flak fire.
  
−
Although the {{PAGENAME}} is meant for ground-attack, the plane lacks significant protection to withstand a lot of incoming fire. The pilot is well protected by metal plates and bulletproof glass, but the pilot's safety isn't the primary concern for the {{PAGENAME}}, as the tail section is incredibly vulnerable. This is due to the twin-boom design, making a tailstrike twice as likely. And since the tail connects to the wing-section, the plane tends to lose tail-control when struck by wing damage. The engine is very large in comparison to the rest of the plane, making it a common target. The {{PAGENAME}} should avoid all possible damage, as surviving large amounts of fire is highly unlikely. Pulling away from head-on engagements increases the survivability immensely. Avoiding the enemy airfield is also important, as the {{PAGENAME}} lacks the speed to keep it away.
+
=== Modifications and economy ===
 +
{{Specs-Economy}}
  
 
== Armaments ==
 
== Armaments ==
 +
{{Specs-Avia-Armaments}}
 
=== Offensive armament ===
 
=== Offensive armament ===
 +
{{Specs-Avia-Offensive}}
 
<!-- ''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.'' -->
 
<!-- ''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/45 (20 mm)|Akan m/39A (12.7 mm)}}
 
{{main|Akan m/45 (20 mm)|Akan m/39A (12.7 mm)}}
Line 129: Line 143:
  
 
* 1 x 20 mm Akan m/45 cannon, nose-mounted (140 rpg)
 
* 1 x 20 mm Akan m/45 cannon, nose-mounted (140 rpg)
−
 
−
The {{PAGENAME}} shares the same 20mm cannon found on the previous A21A-3. This cannon is near identical to the [[Hispano Mk.V (20 mm)|Hispano Mk.V]], only with a 30rpm lower fire-rate. The shells perform the same as on all the other 20mm jets, making it highly devastating against all types of aircraft. Armoured targets perform favorably with this cannon, as the air-target belt can cause some mishaps during short bursts. The cannon runs out of ammunition quite quickly compared to the machine-guns, so saving it by only making use of the small caliber guns first can be ideal for spraying.
 
−
 
 
* 2 x 12.7 mm Akan m/39A machine guns, nose-mounted (350 rpg = 700 total)
 
* 2 x 12.7 mm Akan m/39A machine guns, nose-mounted (350 rpg = 700 total)
 
* 2 x 12.7 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)
 
* 2 x 12.7 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)
  
−
The {{PAGENAME}} features .50 cal machine guns, being identical to the later American ones. Although a direct downgrade to the Swedish 13mm previously found on the plane, the {{PAGENAME}} makes good use of these cannons, as they allow for distanced engagements, along with additional firepower to back up the 20mm cannon. Their ammo count is quite high as well, making them great for strafing, and finishing off heavy bombers.
+
The {{PAGENAME}} shares the same 20 mm cannon found on the previous [[A21A-3]]. This cannon is near identical to the [[Hispano Mk.V (20 mm)|Hispano Mk.V]], only with a 30 rpm lower fire-rate. The shells perform the same as on all the other 20 mm-armed jets, making it highly devastating against all types of aircraft. The Armoured targets belt performs favourably with this cannon, as the Air targets belt can cause some mishaps during short bursts. The cannon runs out of ammunition quite quickly compared to the machine-guns, so saving it by only making use of the small calibre guns first can be ideal for spraying.
 +
 
 +
The {{PAGENAME}} features .50 cal machine guns, being identical to the later American ones. Although a direct downgrade from the Swedish 13 mm previously found on the plane, the {{PAGENAME}} makes good use of these cannons, as they allow for distanced engagements, along with additional firepower to back up the 20 mm cannon. Their ammo count is quite high as well, making them great for strafing, and finishing off heavy bombers.
  
 
=== Suspended armament ===
 
=== Suspended armament ===
 +
{{Specs-Avia-Suspended}}
 
<!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
 
<!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
−
{{main|m/49|m/49A|m/51|Ksp m/22 (8 mm)}}
+
{{main|hprak m/49|psrak m/49A|srak m/51|Ksp m/22 (8 mm)}}
  
 
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
 
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
Line 145: Line 159:
 
* Without load
 
* Without load
 
* 8 x 8 mm Ksp m/22 machine guns, belly-mounted (gunpod) (100 rpg = 800 total)
 
* 8 x 8 mm Ksp m/22 machine guns, belly-mounted (gunpod) (100 rpg = 800 total)
 +
* 10 x psrak m/49A rockets
 +
* 10 x srak m/51 rockets
 +
* 5 x hprak m/49 rockets
 +
 +
[[File:A21RB Armaments.png|thumb|313x313px|{{PAGENAME}} carrying m/49A rockets]]
 +
A unique feature only found on the {{PAGENAME}} is the ability to use the abstract gunpod. Commonly known as "Paddan" (directly translated to "The toad"), the gunpod features eight 8 mm Ksp m/22, repurposed from old J8 Gladiators. Although weak guns by nature, having eight of them gives the {{PAGENAME}} unprecedented fire-power shredding anything that goes head-to-head with it. The ammunition count is low, however, which forces pilots to use them carefully. Saving the gunpod by only using .50 cal on distant opponents, allows the {{PAGENAME}} to get rid of opponents during short bursts, which can be incredibly useful if mastered correctly. It's still important to mention that this gunpod is incredibly heavy and not very aerodynamic, and thus takes a heavy hit on the overall speed of the plane.
 +
 +
The {{PAGENAME}} has a lot of additional advantages over the prior A21A-3, especially when it comes to the ground ordnance. The ground rockets are finally mounted in the middle of the plane, firing one at a time starting from the right. Since the Swedish rockets, especially the m/49 rockets, feature amazing ballistics with little inaccuracy, that along with high penetration, makes for some highly effective air-support. And since the {{PAGENAME}} is quite light, it can easily perform several passes on opponents, which is quite important against heavy opponents.
 +
 +
== Usage in battles ==
 +
<!-- ''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).'' -->
 +
'''Air Realistic Battles'''
  
−
A unique feature only found on the {{PAGENAME}} is the ability to use the abstract gunpod. Commonly known as "Paddan" (directly translated to "The toad"), is a gunpod featuring eight 8mm Ksp m/22, that have been repurposed from old J8 Gladiators. Although weak guns by nature, having eight of them gives the {{PAGENAME}} unpresidented fire-power shredding anything that goes head-to-head with it. The ammunition count is low, however, which forces pilots to use them carefully. Saving the gunpod by only using .50 cal on distanced opponents, allows the {{PAGENAME}} to get rid of opponents during short bursts, which can be incredibly useful if mastered correctly. It's still important to mention that this gunpod is incredibly heavy and not very aerodynamic, and thus takes a heavy hit on the overall speed of the plane.
+
* Climb to altitude
 +
* Energy-fight opponents by lowering their speed
 +
* Boom & Zoom people below you
 +
* Dogfight slow targets when necessary
 +
* Fire machine guns and cannons separately to save ammo
  
−
* 10 x m/49A rockets
+
Despite being jet-powered, the {{PAGENAME}} still performs best when played like a propeller driven aircraft. The airplane struggles to reach high speeds, and drops it fairly quickly when manoeuvring. So the best use of the new engine is to gain altitude. Although weak in performance compared to earlier jets, the {{PAGENAME}} is decent at climbing to altitude, and can very efficiently deal with targets thanks to the high agility offered at lower speeds. Although the flaps are designed for much lower speeds (similar to the A21A-3), the plane still performs similar to the propeller variant when turning, making them less desired than on other jets.
  
−
* 10 x m/51 rockets
+
The best way to start a match is to immediately gain altitude. A height advantage around 5 km is usually ideal to avoid losing vital speed when fighting, as the plane can simply dive to gain more velocity. The best way to handle opponents, is to single them out from their team, and forcing them to dogfight, as the {{PAGENAME}} is too slow to chase anyone down. The {{PAGENAME}} is also efficient against propeller aircraft, as it can comfortably turn-fight, while keeping a higher speed. When paired with the devastating firepower it provides, the {{PAGENAME}} becomes deadly when used properly.
−
* 5 x m/49 rockets
 
  
−
The {{PAGENAME}} has a lot of additional advantages over the prior A21A-3, especially when it comes to the ground ordinance. The ground rockets are finally mounted in the middle of the plane, firing one at a time starting from the right. Since the Swedish rockets, especially the m/49 rockets, feature amazing ballistics with little inaccuracy, that along with high penetration, makes for some highly effective air-support. And since the {{PAGENAME}} is quite light, it can easily perform several passes on opponents, which is quite important against heavy opponents.
+
'''Ground Realistic Battles'''
  
−
== Usage in battles ==
+
* Use minimum fuel and m/49A rockets
−
''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).''
+
* Stay low or high above the ground to avoid SPAA
 +
* Prioritize air-targets
 +
* Attack opponents directly from the side or slightly from above (rockets)
 +
* Strafe directly from above (8 mm gunpod)
 +
 
 +
The {{PAGENAME}} is even more effective in combined battles, as the platform is highly agile, ideal for close and precise rocket attacks. To complement this, the {{PAGENAME}} features a fantastic rocket placement, in the center of the aircraft. These launch one at a time, similar to other Swedish aircraft. This gives the {{PAGENAME}} 10 single rocket salvos (m/49A), that can effectively kill one tank each when aimed properly. It's ideal to launch each rocket with the crosshair pointed slightly above the target, as they are placed fairly low. A creative pilot could also make use of the much larger m/49 rockets, but these require a lot of compensation in elevation, and are overall much more difficult to make use of.
  
−
=== Modules ===
+
While playing the {{PAGENAME}} in Ground RB, it's important to still prioritize air targets. The {{PAGENAME}} is still agile, despite carrying suspended armaments, and is even cheaper to spawn with the 8 mm gunpod, which shreds both aircraft and lightly armoured vehicles. Prioritizing aircraft will substantially help both you, and the team below, as they are capable of dealing equally as much damage.
−
{| class="wikitable"
 
−
! Tier
 
−
! colspan="2" | Flight performance
 
−
! Survivability
 
−
! colspan="3" | Weaponry
 
−
|-
 
−
| I
 
−
| Fuselage repair
 
−
|
 
−
|
 
−
| Offensive 20 mm
 
−
| Offensive 8 mm
 
−
|
 
−
|-
 
−
| II
 
−
| New boosters
 
−
| Compressor
 
−
| Airframe
 
−
| New 20 mm cannons
 
−
|
 
−
| m/49A
 
−
|-
 
−
| III
 
−
| Wings repair
 
−
| Engine
 
−
|
 
−
| Offensive 12 mm
 
−
| New 8 mm MGs
 
−
| m/51
 
−
|-
 
−
| IV
 
−
| G-suit
 
−
|
 
−
| Cover
 
−
| New 12 mm MGs
 
−
|
 
−
| m/49
 
−
|-
 
−
|}
 
  
 
=== Pros and cons ===
 
=== Pros and cons ===
Line 204: Line 199:
 
'''Pros:'''
 
'''Pros:'''
  
−
* Highly maneuverable - Competes with propeller driven aircraft
+
* Highly manoeuvrable - Competes with propeller driven aircraft
 
* Accurate and powerful rockets - Highly effective against most vehicles
 
* Accurate and powerful rockets - Highly effective against most vehicles
 
* Upgraded engine compared to the [[J21RA]] - Better rate of climb and acceleration
 
* Upgraded engine compared to the [[J21RA]] - Better rate of climb and acceleration
−
* Familiar layout for seasoned Swede Pilots - Same gun placement as all previous Saab 21's
+
* Familiar layout for seasoned Swedish pilots - Same gun placement as all previous Saab 21s
 
* Useful air-brakes - Good at avoiding higher speeds
 
* Useful air-brakes - Good at avoiding higher speeds
 +
* Access to suspended 8 x 8 mm gunpod
  
 
'''Cons:'''
 
'''Cons:'''
  
−
* Low top speed - Can't reach 800 kph without tearing off its wings
+
* Low top speed - Can't reach 800 km/h without tearing off its wings
−
* Downgraded armament - 12.7mm machine guns instead of the old 13mm
+
* Downgraded armament - 12.7 mm machine guns instead of the old 13 mm
 
* Small fuel tank with limited fuel choice - Either 20 or 9 minutes of fuel
 
* Small fuel tank with limited fuel choice - Either 20 or 9 minutes of fuel
 
* Engine prone to fuel starvation - negative G-load turns the engine off
 
* Engine prone to fuel starvation - negative G-load turns the engine off
−
* Cumbersome rocket ramp - reduces top-speed by almost 100 kph
+
* Cumbersome rocket ramp - reduces top-speed by almost 100 km/h
 
* External gunpod lacks significant ammunition count
 
* External gunpod lacks significant ammunition count
 +
* Flaps tear off easily (designed for the propeller version)
  
 
== 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></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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== Media ==
 
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{{Youtube-gallery|zn2uhgI2PPg|'''Best twin-boom aircraft''' discusses the {{PAGENAME}} at 03:55 - ''War Thunder Official Channel''|_FQwNWDldSA|'''Sweden Doesn't Disappoint: A21RB''' - ''Spit_flyer''}}
  
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== See also ==
 
== See also ==
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'''Similar Swedish aircraft'''
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* [[Yak-15]]
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* [[A2D-1]]
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* [https://forum.warthunder.com/index.php?/topic/480524-j21ra/ Official data sheet - more details about the performance]
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* ''encyclopedia page on the aircraft;''
 
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{{AirManufacturer Saab}}
 
{{AirManufacturer Saab}}
 
{{Sweden jet aircraft}}
 
{{Sweden jet aircraft}}

Latest revision as of 19:16, 21 August 2024

Introducing Wiki 3.0
This page is about the Swedish jet fighter A21RB. For other versions, see J21 (Family).
A21RB
saab_a21rb.png
GarageImage A21RB.jpg
360://https://old-wiki.warthunder.com/images/0/02/Cockpit_saab_a21rb.jpg
A21RB
Sweden flag.png Sweden
V Rank
Battle rating:
AB RB SB
6.7 6.7 7.0
Class:
Research:82 000 Specs-Card-Exp.png
Purchase:240 000 Specs-Card-Lion.png

Description

The A21RB is a rank V Swedish jet fighter with a battle rating of 6.7 (AB/RB) and 7.0 (SB). It was introduced in Update 1.95 "Northern Wind".

The A21RB is a jet-powered version of the prior A21A-3, giving it higher speeds and heavier ordnance.

General info

Two A21RB flying in formation

The A21RB is a highly manoeuvrable plane, with a good climb rate. The guns, although a downgrade compared to the 13.2 mm MGs from the previous propeller-driven version, still provide enough firepower to down most targets efficiently. The A21RB is also the first to feature the iconic "Paddan" gunpod, giving it additional lead downrange. Along with central-mounted rockets, the plane is comfortable in both Air Realistic and Ground Realistic battles. The only downside is the airframe, which prevents the aircraft from reaching higher speeds. This is due to the engine being a bit too powerful for the plane, making it common to rip in straight lines and shallow dives.

The plane is an overall great introduction for anyone looking to learn to fly jet aircraft, as the vehicle handles very similar to its propeller-driven counterpart, while at a much higher speed than before.

Flight performance

Air brakes
Allows you to dramatically reduce the flight speed by releasing special flaps
Max speed
at 2 000 m850 km/h
Turn time24 s
Max altitude12 192 m
EngineSvenska Flygmotor RM1A
TypeJet
Cooling systemAir
Take-off weight5 t

The A21RB is distinctly different in looks and performance from all other planes found at the same BR-range. Along with the Yak-15, the Saab 21R is one of the two propeller-driven planes successfully converted into jet propulsion. Just like its Soviet counterpart, the solution comes at the cost of speed. Although a lot more powerful than the A21A-3, it still has the same airframe limitations. The climb-rate is also significantly improved due to the weight of the vehicle, resulting in good vertical energy with the ability to stall out slower opponents. Getting back down can prove difficult however, as the A21RB has a rip speed of just 787 km/h, which it can accidentally reach if not careful. To avoid this, the plane features a small set of air-brakes, which aids in maintaining a safe speed. Experienced pilots can find a good use for them to force overshoots, or to out-turn propeller-driven opponents. Be careful with the engine however! The propulsion of the A21RB is very primitive, and suffers from fuel starvation during extreme manoeuvres, especially in negative G-loads. This can be fatal when fighting vertically, as the engine drops all power almost immediately, and has to spool back up again before reaching the same efficiency as before.

Characteristics Max Speed
(km/h at 2,000 m) 		Max altitude
(metres) 		Turn time
(seconds) 		Rate of climb
(metres/second) 		Take-off run
(metres)
AB RB AB RB AB RB
Stock 811 789 12192 25.1 25.7 21.0 20.3 850
Upgraded 878 850 23.0 24.0 28.4 24.5

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear Drogue chute
✓ ✓ ✓ ✓ X X
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
787 360 438 409 260 ~11 ~5
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 450 < 390 < 420 N/A

Engine performance

Engine Aircraft mass
Engine name Number Basic mass Wing loading (full fuel)
Svenska Flygmotor RM1A 1 3,635 kg 196 kg/m2
Engine characteristics Mass with fuel (no weapons load) Max Takeoff
Weight
Weight (each) Type 6m fuel 20m fuel
705 kg Centrifugal-flow turbojet 3,849 kg 4,347 kg 5,000 kg
Maximum engine thrust @ 0 m (RB/SB) Thrust to weight ratio @ 0 m (100%)
Condition 100% WEP 6m fuel 20m fuel MTOW
Stationary 1,420 kgf N/A 0.37 0.33 0.28
Optimal 1,420 kgf
(0 km/h) 		N/A 0.37 0.33 0.28

Survivability and armour

Crew1 person
Speed of destruction
Structural787 km/h
Gear360 km/h
Protective components found in the A21RB.
  • 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)

Although the A21RB is meant for ground-attack, the plane lacks significant protection to withstand a lot of incoming fire. The pilot is well protected by metal plates and bulletproof glass, but the pilot's safety isn't the primary concern for the A21RB, as the tail section is incredibly vulnerable. This is due to the twin-boom design, making a tailstrike twice as likely. And since the tail connects to the wing-section, the plane tends to lose tail-control when struck by wing damage. The engine is very large in comparison to the rest of the plane, making it a common target. The A21RB should avoid all possible damage, as surviving large amounts of fire is highly unlikely. Pulling away from head-on engagements increases the survivability immensely. Avoiding the enemy airfield is also important, as the A21RB lacks the speed to keep it safe from flak fire.

Modifications and economy

Repair costBasic → Reference
AB3 099 → 4 580 Sl icon.png
RB7 453 → 11 015 Sl icon.png
SB11 183 → 16 528 Sl icon.png
Total cost of modifications71 400 Rp icon.png
116 400 Sl icon.png
Talisman cost1 900 Ge icon.png
Crew training68 000 Sl icon.png
Experts240 000 Sl icon.png
Aces1 400 Ge icon.png
Research Aces620 000 Rp icon.png
Reward for battleAB / RB / SB
120 / 270 / 600 % Sl icon.png
184 / 184 / 184 % Rp icon.png
Modifications
Flight performance Survivability Weaponry
Mods aerodinamic fuse.png
Fuselage repair
Research:
4 800 Rp icon.png
Cost:
7 800 Sl icon.png
350 Ge icon.png
Mods jet compressor.png
Compressor
Research:
3 200 Rp icon.png
Cost:
5 200 Sl icon.png
230 Ge icon.png
Mods booster.png
New boosters
Research:
3 200 Rp icon.png
Cost:
5 200 Sl icon.png
230 Ge icon.png
Mods aerodinamic wing.png
Wings repair
Research:
3 600 Rp icon.png
Cost:
5 900 Sl icon.png
260 Ge icon.png
Mods jet engine.png
Engine
Research:
3 600 Rp icon.png
Cost:
5 900 Sl icon.png
260 Ge icon.png
Mods g suit.png
G-suit
Research:
4 600 Rp icon.png
Cost:
7 500 Sl icon.png
340 Ge icon.png
Mods armor frame.png
Airframe
Research:
3 200 Rp icon.png
Cost:
5 200 Sl icon.png
230 Ge icon.png
Mods jet engine extinguisher.png
EFS
Research:
4 600 Rp icon.png
Cost:
7 500 Sl icon.png
340 Ge icon.png
Mods armor cover.png
Cover
Research:
4 600 Rp icon.png
Cost:
7 500 Sl icon.png
340 Ge icon.png
Mods ammo.png
akan_m47_belt_pack
Research:
4 800 Rp icon.png
Cost:
7 800 Sl icon.png
350 Ge icon.png
Mod arrow 0.png
Mods ammo.png
8_63_belt_pack
Research:
4 800 Rp icon.png
Cost:
7 800 Sl icon.png
350 Ge icon.png
Mod arrow 1.png
Mods weapon.png
akan_m47_new_gun
Research:
3 200 Rp icon.png
Cost:
5 200 Sl icon.png
230 Ge icon.png
Mods pilon rocket.png
m/49B
Research:
3 200 Rp icon.png
Cost:
5 200 Sl icon.png
230 Ge icon.png
Mod arrow 0.png
Mods ammo.png
bmg50_belt_pack
Research:
3 600 Rp icon.png
Cost:
5 900 Sl icon.png
260 Ge icon.png
Mod arrow 0.png
Mods weapon.png
8_63_new_gun
Research:
3 600 Rp icon.png
Cost:
5 900 Sl icon.png
260 Ge icon.png
Mods pilon rocket.png
m/51
Research:
3 600 Rp icon.png
Cost:
5 900 Sl icon.png
260 Ge icon.png
Mod arrow 0.png
Mods weapon.png
bmg50_new_gun
Research:
4 600 Rp icon.png
Cost:
7 500 Sl icon.png
340 Ge icon.png
Mods pilon rocket.png
m/49
Research:
4 600 Rp icon.png
Cost:
7 500 Sl icon.png
340 Ge icon.png

Armaments

Offensive armament

Weapon 120 mm Akan m/45 cannon
Ammunition140 rounds
Fire rate725 shots/min
Weapon 24 x 12.7 mm Akan m/39A machine gun
Ammunition1 350 rounds
Fire rate768 shots/min
Main articles: Akan m/45 (20 mm), Akan m/39A (12.7 mm)

The A21RB is armed with:

  • 1 x 20 mm Akan m/45 cannon, nose-mounted (140 rpg)
  • 2 x 12.7 mm Akan m/39A machine guns, nose-mounted (350 rpg = 700 total)
  • 2 x 12.7 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)

The A21RB shares the same 20 mm cannon found on the previous A21A-3. This cannon is near identical to the Hispano Mk.V, only with a 30 rpm lower fire-rate. The shells perform the same as on all the other 20 mm-armed jets, making it highly devastating against all types of aircraft. The Armoured targets belt performs favourably with this cannon, as the Air targets belt can cause some mishaps during short bursts. The cannon runs out of ammunition quite quickly compared to the machine-guns, so saving it by only making use of the small calibre guns first can be ideal for spraying.

The A21RB features .50 cal machine guns, being identical to the later American ones. Although a direct downgrade from the Swedish 13 mm previously found on the plane, the A21RB makes good use of these cannons, as they allow for distanced engagements, along with additional firepower to back up the 20 mm cannon. Their ammo count is quite high as well, making them great for strafing, and finishing off heavy bombers.

Suspended armament

List of setups (4)
Setup 18 x 8 mm Ksp m/22 machine gun (ammunition: 800 rounds)
Setup 210 x 14,5 cm psrak m/49B rockets
Setup 310 x 15 cm srak m/51 rockets
Setup 45 x 18 cm hprak m/49 rockets
Main articles: hprak m/49, psrak m/49A, srak m/51, Ksp m/22 (8 mm)

The A21RB can be outfitted with the following ordnance:

  • Without load
  • 8 x 8 mm Ksp m/22 machine guns, belly-mounted (gunpod) (100 rpg = 800 total)
  • 10 x psrak m/49A rockets
  • 10 x srak m/51 rockets
  • 5 x hprak m/49 rockets
A21RB carrying m/49A rockets

A unique feature only found on the A21RB is the ability to use the abstract gunpod. Commonly known as "Paddan" (directly translated to "The toad"), the gunpod features eight 8 mm Ksp m/22, repurposed from old J8 Gladiators. Although weak guns by nature, having eight of them gives the A21RB unprecedented fire-power shredding anything that goes head-to-head with it. The ammunition count is low, however, which forces pilots to use them carefully. Saving the gunpod by only using .50 cal on distant opponents, allows the A21RB to get rid of opponents during short bursts, which can be incredibly useful if mastered correctly. It's still important to mention that this gunpod is incredibly heavy and not very aerodynamic, and thus takes a heavy hit on the overall speed of the plane.

The A21RB has a lot of additional advantages over the prior A21A-3, especially when it comes to the ground ordnance. The ground rockets are finally mounted in the middle of the plane, firing one at a time starting from the right. Since the Swedish rockets, especially the m/49 rockets, feature amazing ballistics with little inaccuracy, that along with high penetration, makes for some highly effective air-support. And since the A21RB is quite light, it can easily perform several passes on opponents, which is quite important against heavy opponents.

Usage in battles

Air Realistic Battles

  • Climb to altitude
  • Energy-fight opponents by lowering their speed
  • Boom & Zoom people below you
  • Dogfight slow targets when necessary
  • Fire machine guns and cannons separately to save ammo

Despite being jet-powered, the A21RB still performs best when played like a propeller driven aircraft. The airplane struggles to reach high speeds, and drops it fairly quickly when manoeuvring. So the best use of the new engine is to gain altitude. Although weak in performance compared to earlier jets, the A21RB is decent at climbing to altitude, and can very efficiently deal with targets thanks to the high agility offered at lower speeds. Although the flaps are designed for much lower speeds (similar to the A21A-3), the plane still performs similar to the propeller variant when turning, making them less desired than on other jets.

The best way to start a match is to immediately gain altitude. A height advantage around 5 km is usually ideal to avoid losing vital speed when fighting, as the plane can simply dive to gain more velocity. The best way to handle opponents, is to single them out from their team, and forcing them to dogfight, as the A21RB is too slow to chase anyone down. The A21RB is also efficient against propeller aircraft, as it can comfortably turn-fight, while keeping a higher speed. When paired with the devastating firepower it provides, the A21RB becomes deadly when used properly.

Ground Realistic Battles

  • Use minimum fuel and m/49A rockets
  • Stay low or high above the ground to avoid SPAA
  • Prioritize air-targets
  • Attack opponents directly from the side or slightly from above (rockets)
  • Strafe directly from above (8 mm gunpod)

The A21RB is even more effective in combined battles, as the platform is highly agile, ideal for close and precise rocket attacks. To complement this, the A21RB features a fantastic rocket placement, in the center of the aircraft. These launch one at a time, similar to other Swedish aircraft. This gives the A21RB 10 single rocket salvos (m/49A), that can effectively kill one tank each when aimed properly. It's ideal to launch each rocket with the crosshair pointed slightly above the target, as they are placed fairly low. A creative pilot could also make use of the much larger m/49 rockets, but these require a lot of compensation in elevation, and are overall much more difficult to make use of.

While playing the A21RB in Ground RB, it's important to still prioritize air targets. The A21RB is still agile, despite carrying suspended armaments, and is even cheaper to spawn with the 8 mm gunpod, which shreds both aircraft and lightly armoured vehicles. Prioritizing aircraft will substantially help both you, and the team below, as they are capable of dealing equally as much damage.

Pros and cons

Pros:

  • Highly manoeuvrable - Competes with propeller driven aircraft
  • Accurate and powerful rockets - Highly effective against most vehicles
  • Upgraded engine compared to the J21RA - Better rate of climb and acceleration
  • Familiar layout for seasoned Swedish pilots - Same gun placement as all previous Saab 21s
  • Useful air-brakes - Good at avoiding higher speeds
  • Access to suspended 8 x 8 mm gunpod

Cons:

  • Low top speed - Can't reach 800 km/h without tearing off its wings
  • Downgraded armament - 12.7 mm machine guns instead of the old 13 mm
  • Small fuel tank with limited fuel choice - Either 20 or 9 minutes of fuel
  • Engine prone to fuel starvation - negative G-load turns the engine off
  • Cumbersome rocket ramp - reduces top-speed by almost 100 km/h
  • External gunpod lacks significant ammunition count
  • Flaps tear off easily (designed for the propeller version)

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></ref>, as well as adding them at the end of the article with <references />. 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).

Media

Skins
Videos
Best twin-boom aircraft discusses the A21RB at 03:55 - War Thunder Official Channel
Sweden Doesn't Disappoint: A21RB - Spit_flyer

See also

Similar Swedish aircraft

Comparable Aircraft

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 jet aircraft
Fighters  J21RA
  J29A · A29B · J29D · J29F
  J32B
  J34
  J35A · J35D
  JA37C · JA37D · JA37DI · JA37DI F21
  JAS39A · JAS39C
Strike aircraft  A21RB
  A32A · A32A Röd Adam
  A28B
  AJ37 · AJS37
  SK60B · SAAB-105G
Export  SAAB-105OE
Finland  ▄Vampire FB 52A · ▄MiG-21bis · Saab J35XS

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