J21RA - Revision history

U38088265: /* Description */

2023-11-22T20:10:28Z

‎Description

U3243125: /* Description */

2023-11-22T01:27:43Z

‎Description

U44629479: Edits

2022-12-21T10:07:14Z

Edits

U120610831: /* Survivability and armour */ EFS added

2022-12-20T21:00:26Z

‎Survivability and armour: EFS added

U38088265: Edits

2022-05-08T14:13:19Z

Edits

U38088265 at 14:40, 30 January 2022

2022-01-30T14:40:36Z

U44629479: Edits

2021-07-14T22:56:47Z

Edits

U38088265: Edits

2021-07-14T21:05:17Z

Edits

Show changes

U26781411: Added information from A21RB. Added images. Added Usage In Battles

2021-07-14T19:29:56Z

Added information from A21RB. Added images. Added Usage In Battles

U88722516: /* History */

2021-05-31T13:51:53Z

‎History

@@ Line 12: / Line 12: @@
 == 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 '''{{Specs|name}}'''  were Swedens first jet powered aircraft, built on the already existing [[J21 (Family)|J21]]'s. The former planes had to be altered a bit due to issues that came with installing a jet engine and would encounter a few issues in the initial stages, but would later be resolved and the first flight of the {{PAGENAME}} would not be till 10 march 1947 where it would have its first flight. It was less than adequate in a fighter role, but would perform better in an attacker role. The Swedish airforce would used these jets between 1949 to 1957 where they would later be replaced by [[J29 (Family)|J29]] and [[A28B]].
+The '''{{Specs|name}}''' was Sweden's first jet powered aircraft, built on the existing [[J21 (Family)|J21 series]]. The former planes had to be altered a bit due to issues that came with installing a jet engine and would encounter a few issues in the initial stages, but these would later be resolved. It would not be until 10 March 1947 when it would have its first flight. It was less than adequate in a fighter role, but would perform better in an attacker role. The Swedish air force would used these jets between 1949 to 1957, when they would later be replaced by the [[J29 (Family)|J29]] and [[A28B]].
-The {{PAGENAME}} was introduced in [[Update 1.95 "Northern Wind"]]. It's a jet-powered version of the [[J21 (Family)|J21]], it is the Swedish introduction to jets. Due to reciving a jet engine the {{PAGENAME}} comes with a higher maximum speed than the predecessor [[J21A-2]], it can perform very well in capable hands as hit and run jet, but it can also perform well if needed in a dogfight. Having only 1 cannon and 4 heavy machineguns giving it similar firepower as the [[J21A-2]], due to it being an early stage jet the firepower is adequate enough to deal with most enemies it will be up against. The {{PAGENAME}} is an jet that is pretty user friendly alot of ammunition so mistakes when taking shots are not so costly, but there is also dangers due to it having an habit to easily tear off its wings at a high speed, fortunantly it comes with airbrakes that can make the vehicle slow down fast enough incase getting close to these dangerous levels of speed.
+The {{PAGENAME}} was introduced in [[Update 1.95 "Northern Wind"]]. As a jet-powered version of the [[J21 (Family)|J21]], it is the Swedish introduction to jets. Due to equipping a jet engine, the {{PAGENAME}} comes with a higher maximum speed than its predecessor, the [[J21A-2]]; it can perform very well in capable hands as a hit and run jet, but it can also perform well if needed in a dogfight. Having a cannon and four heavy machine guns gives it similar firepower to the [[J21A-2]], which is adequate enough to deal with most enemies it will be up against. The {{PAGENAME}} is pretty user friendly, with a lot of ammunition, so mistakes when taking shots are not so costly, but there are also dangers due to it having a habit of easily tearing off its wings at high speeds. Fortunately, it comes with airbrakes that can slow the aircraft down fast enough in case it gets close to these dangerous levels of speed.
 == General info ==

@@ Line 12: / Line 12: @@
 == 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 '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish jet fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]].
+The '''{{Specs|name}}'''  were Swedens first jet powered aircraft, built on the already existing [[J21 (Family)|J21]]'s. The former planes had to be altered a bit due to issues that came with installing a jet engine and would encounter a few issues in the initial stages, but would later be resolved and the first flight of the {{PAGENAME}} would not be till 10 march 1947 where it would have its first flight. It was less than adequate in a fighter role, but would perform better in an attacker role. The Swedish airforce would used these jets between 1949 to 1957 where they would later be replaced by [[J29 (Family)|J29]] and [[A28B]].
-The {{PAGENAME}} is a jet-powered version of the prior [[J21A-2]], giving it higher speeds and new guns.
+The {{PAGENAME}} was introduced in [[Update 1.95 "Northern Wind"]]. It's a jet-powered version of the [[J21 (Family)|J21]], it is the Swedish introduction to jets. Due to reciving a jet engine the {{PAGENAME}} comes with a higher maximum speed than the predecessor [[J21A-2]], it can perform very well in capable hands as hit and run jet, but it can also perform well if needed in a dogfight. Having only 1 cannon and 4 heavy machineguns giving it similar firepower as the [[J21A-2]], due to it being an early stage jet the firepower is adequate enough to deal with most enemies it will be up against. The {{PAGENAME}} is an jet that is pretty user friendly alot of ammunition so mistakes when taking shots are not so costly, but there is also dangers due to it having an habit to easily tear off its wings at a high speed, fortunantly it comes with airbrakes that can make the vehicle slow down fast enough incase getting close to these dangerous levels of speed.
 == General info ==

@@ Line 127: / Line 127: @@
 * 10 mm steel - Pilot's back armour plate
 * 60 mm bulletproof glass
 In terms of protection, 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.
 === Modifications and economy ===

@@ Line 129: / Line 129: @@
 In terms of protection, 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.
 === Modifications and economy ===
@@ Line 152: / Line 154: @@
 == 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).'' -->
 * Climb to altitude
 * Energy-fight opponents by lowering their speed
@@ Line 198: / Line 201: @@
 ;Skins
 * [https://live.warthunder.com/feed/camouflages/?vehicle=saab_j21ra Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
@@ Line 209: / Line 213: @@
 '''Similar Swedish aircraft'''
 * [[J28B]]
 * [[SK60B]]
 '''Comparable Aircraft'''
 * [[F-80A-5]]
 * [[He 162 (Family)]]

@@ Line 40: / Line 40: @@
 |-
 ! Stock
-| 763 || 744 || rowspan="2" | {{Specs|ceiling}} || 25.1 || 25.9 || 18.0 || 17.3 || rowspan="2" | 850
+| 763 || 742 || rowspan="2" | {{Specs|ceiling}} || 25.1 || 25.9 || 18.0 || 17.3 || rowspan="2" | 850
 |-
 ! Upgraded
-| 836 || 799 || 23.0 || 24.0 || 24.4 || 21.0
+| 837 || 799 || 23.0 || 24.0 || 24.4 || 21.0
 |-
 |}
@@ Line 90: / Line 90: @@
 |-
 ! colspan="2" | Engine name || Number
-! colspan="2" | Empty mass || colspan="2" | Wing loading (full fuel)
+! colspan="2" | {{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 RM1 || 1
-| colspan="2" | 3,420 kg || colspan="2" | 188 kg/m<sup>2</sup>
+| colspan="2" | 3,550 kg || colspan="2" | 192 kg/m<sup>2</sup>
 |-
 ! colspan="3" | Engine characteristics
-! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br />Weight
+! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br>Weight
 |-
 ! Weight (each) || colspan="2" | Type
@@ Line 102: / Line 102: @@
 |-
 | 705 kg || colspan="2" | Centrifugal-flow turbojet
-| 3,654 kg || 4,107 kg || 4,172 kg || 5,000 kg
+| 3,764 kg || 4,169 kg || 4,262 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="4" | Thrust to weight ratio @ 0 m (100%)
 |-
@@ Line 111: / Line 111: @@
 |-
 | ''Stationary'' || 1,290 kgf || N/A
-| 0.35 || 0.31 || 0.31 || 0.26
+| 0.34 || 0.31 || 0.30 || 0.26
 |-
-| ''Optimal'' || 1,290 kgf<br />(0 km/h) || N/A
+| ''Optimal'' || 1,290 kgf<br>(0 km/h) || N/A
-| 0.35 || 0.31 || 0.31 || 0.26
+| 0.34 || 0.31 || 0.30 || 0.26
 |-
 |}
@@ Line 143: / Line 143: @@
 * 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 = 750 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)

@@ Line 7: / Line 7: @@
 |code=saab_j21ra
 |images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
-|cockpit=Cockpit saab j21ra.jpg
+|cockpit=Cockpit_saab_j21ra.jpg
 }}
@@ Line 190: / Line 190: @@
 During WWII, the Saab aircraft production company produced the Saab 21, a fighter aircraft with an unorthodox twin-boom configuration along with a German DB 605B engine. The first such aircraft flew in July of 1943 and entered service soon thereafter. During this time, the Saab firm explored various options for upgrading their Saab 21s, including a variant powered by a Rolls-Royce Griffon engine producing 2000 hp. However, at the same time, the Saab firm was also investigating the possibility of a jet-engined fighter; this led the Saab firm to pursue a jet-engined variant of the Saab 21 for use with the Swedish air force.
-In 1947, Saab received the first older J21 airframes for conversion into a jet fighter, designated the J21R; the airframes were extensively modified to house a British-sourced De Havilland Goblin turbojet in place of the DB 605 and its corresponding propeller. Extensive modifications were also made to the aircraft's fuselage, wings and tailplane; notably, the tail section was redesigned so that the elevator would be clear of the jet engine's exhaust. Additionally, the aircraft featured an ejection seat, a novelty at the time.
+In 1947, Saab received the first older J21 airframes for conversion into a jet fighter, designated the J21R; the airframes were extensively modified to house a British-sourced de Havilland Goblin turbojet in place of the DB 605 and its corresponding propeller. Extensive modifications were also made to the aircraft's fuselage, wings and tailplane; notably, the tail section was redesigned so that the elevator would be clear of the jet engine's exhaust. Additionally, the aircraft featured an ejection seat, a novelty at the time.
 Initially, a production run of 124 aircraft was planned; however, this was cut to 64 aircraft when the more-advanced J29 Tunnan became available in 1948. The J21RA was the designation given to the first 34 of these aircraft, powered by the Goblin 2 engine, while the J21RB was powered by an indigenously-built Goblin 3 engine. The J21 was retired in the mid-1950s with the introduction of more advanced aircraft such as the Saab 32 Lansen; no original aircraft were preserved but an old Saab 21 airframe was converted to resemble the Saab 21R; this aircraft is displayed at the Swedish Air Force Museum.

@@ Line 170: / Line 170: @@
 '''Pros:'''
-* Highly manoeuvrable - Competes with propeller driven aircraft
+* Highly manoeuvrable, competes with propeller driven aircraft
-* Familiar layout for seasoned Swedish pilots - Same gun placement as all previous Saab 21s
+* Familiar layout for seasoned Swedish pilots, same gun placement as previous Saab 21s
-* Useful air-brakes - Good at avoiding higher speeds
+* Useful airbrakes, good at avoiding higher speeds
-* No wing-tanks compared to the [[A21RB]] - Less likely to be set on fire
+* No wing-tanks compared to the [[A21RB]]: Less likely to be set on fire
-* Access to modern 12.7 mm rounds - Highly efficient at dealing damage
+* Access to modern 12.7 mm rounds, highly efficient at dealing damage
 '''Cons:'''
-* Low top speed - Can't reach 800 km/h without tearing off its wings
+* 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
+* Downgraded armament: 12.7 mm machine guns instead of the old 13 mm
-* Small fuel tank with limited fuel choice - Either 21 or 6 minutes of fuel
+* Small fuel tank with limited fuel choice: either 21 or 6 minutes of fuel
-* Engine prone to fuel starvation - negative G-load turns the engine off
+* Engine prone to fuel starvation: negative G manoeuvres turn the engine off
 * Weaker engine compared to the A21RB
@@ Line 195: / Line 195: @@
 == 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.'' -->
 ;Videos
+{{Youtube-gallery|JZcfQqbYWQk|'''Slap a Jet Engine on a Prop? J21RA''' - ''Jengar''|7vSoGWcb5zs|'''The Swedish Jet No Ones Talking About''' - ''WhooptieDo''}}
 == See also ==
@@ Line 207: / Line 209: @@
 '''Similar Swedish aircraft'''
 * [[J28B]]
 * [[SK60B]]
 '''Comparable Aircraft'''
 * [[F-80A-5]]
 * [[He 162 (Family)]]
 == External links ==
 <!-- ''Paste links to sources and external resources, such as:''
 * ''topic on the official game forum;''
 * ''other literature.'' -->

@@ Line 13: / Line 13: @@
 <!-- ''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 '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish jet fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]].
 == General info ==
 === 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}}
+{{Specs-Avia-Flight}}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 J21A-2, 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 800 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, 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" width="70%"
@@ Line 117: / Line 126: @@
 * 10 mm steel - Pilot's back armour plate
 * 60 mm bulletproof glass
 === Modifications and economy ===
@@ Line 133: / Line 144: @@
 * 2 x 12.7 mm Akan m/39A machine guns, nose-mounted (350 rpg = 750 total)
 * 2 x 12.7 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)
 == 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).''-->
-One way to operate this aircraft is to zoom climb up to about 2.5k-3k meters and then drop on a low and slow jet. Staying on someone's tail is very easy with this plane and its defensive flying is quite effective.
+The {{PAGENAME}} can be used in combined battles (Ground RB & Ground SB), but is overall less efficient compared to the [[A21RB]], as it lacks suspended armaments.
 === Pros and cons ===
@@ Line 144: / Line 169: @@
 '''Pros:'''
-* Good turn rate compared to other jets
+* Highly maneuverable - Competes with propeller driven aircraft
-* Decent armament
+* Familiar layout for seasoned Swede Pilots - Same gun placement as all previous Saab 21's
-* Good low-speed performance when utilising flaps
+* Useful air-brakes - Good at avoiding higher speeds
 '''Cons:'''
-* Slow for a jet
+* Low top speed - Can't reach 800 km/h without tearing off its wings
-* Climb might be the worst in comparison to others in its battle rating
+* Downgraded armament - 12.7 mm machine guns instead of the old 13 mm
-* Bad energy retention
+* Small fuel tank with limited fuel choice - Either 21 or 6 minutes of fuel
 == History ==
@@ Line 165: / Line 194: @@
 == 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. -->
 <!--;Images
@@ Line 176: / Line 205: @@
 ;Videos-->
-* ''reference to the series of the aircraft;''
+{{Youtube-gallery|7vSoGWcb5zs|The Swedish Jet No Ones Talking About - War Thunder 1.95|JZcfQqbYWQk|Slap a Jet Engine on a Prop? J21RA - Sweden - War Thunder Review!}}
-* ''links to approximate analogues of other nations and research trees.''
-<!--;Related development
+== See also ==<!-- Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:
 * [[?-?? (Family)]]
@@ Line 187: / Line 217: @@
 * Airplane manufacture name [[Airplane name]]-->
 == External links ==

@@ Line 155: / Line 155: @@
 == 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).''
+<!-- 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 ==