Difference between revisions of "A28B"

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{{Specs-Card|vampire_fb5_j28b}}
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{{Specs-Card
−
 
+
|code=vampire_fb5_j28b
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{{About
+
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
−
| about = Swedish jet fighter '''{{PAGENAME}}'''
+
|cockpit=cockpit_vampire_fb5_j28b.jpg
−
| usage = other version
 
−
| link = Vampire FB 5
 
 
}}
 
}}
  
 
== 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]]
+
The '''{{Specs|name}}''' was a Swedish jet fighter. The A 28B is an export version of a British De Havilland Vampire fighter bomber jet. The A 28B was based on the later Vampire FB 5 and procured in 1949 as J 28B with the final aircraft delivered in 1952 marking the end of piston powered fighter aircraft in Flygvapnet inventory. The Vampires were retired from their role of a fighters in 1956 and replaced by J 29 and J 34. The J 28B were later delegated into attacker role and redesignated A 28B.
−
{{break}}
+
 
−
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Swedish jet fighter {{Battle-rating}}. It was introduced in [[Update 1.95 "Northern Wind"]].
+
The A 28B was introduced in [[Update 1.95 "Northern Wind"]].The Vampire family is known for its great dogfighting capabilities, meaning the A28B can comfortably fend off several opponents at once if controlled by a skillful pilot. This aerial performance is given at the cost of engine power. The acceleration of the A 28B is very weak so superprops won´t have hard time catching up to a slow Vampire that bled its speed in a dogfight.
  
 
== General info ==
 
== General info ==
 
=== Flight performance ===
 
=== Flight performance ===
−
''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.''
+
<!-- ''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.'' -->
 +
{{Specs-Avia-Flight}}
 +
 
 +
The A28B performs well at low altitude where it easily outturns most opponents it faces. Thanks to the excellent flaps and air brakes, a pilot aware of his/her energy can fend off anyone that picks a fight. The flaps can be utilised at various speeds to outturn any enemy at any time. Dogfights are where the Vampire platform shines, it is a highly effective fighter with its relatively light airframe and smooth controls. Although the power is lacklustre, a pilot aware of his/her surroundings will have no difficulty avoiding incoming enemies. This lack of engine power will, however, cripple the A28B when it comes to acceleration. A Vampire tends to lose a lot of speed when engaged in turning. So gaining it back to defend itself against new opponents becomes a hassle. And even if a A28B pilot manages to get their speed up, catching a target will be close to impossible with a slow top speed. This lack of power hinders the A28B in many ways, mostly related to energy. This is why "Vamp" pilots are advised to climb at the beginning of a match, despite the lack of a decent climb rate.
 +
[[File:Rocket J28B.png|thumb|The Aiming reticle of the Swedish m/51 rockets.]]
 +
The A28B performs identically to the Vampire FB 5 which should not come as a surprise. The firepower is what makes them different, however. The A28B is outfitted with the Swedish Akan m/47B (short for "Automatkanon"), which is the Swedish designation of the British Hispano Mk.V, although the calibre and fire rate are the same, the burst mass is larger. This has to do with the Swedish ammunition. The Swedish ammo type contains more TNT and is fully tracer equipped, meaning stealth isn't an option. Despite this downside, the guns perform closer to the American AN/M3 guns instead of the British Hispanos, making the A28B the most effective Vampire in regards to firepower. The A28B is also outfitted with several types of anti-tank and anti-ship rockets. Despite lacking the large 1,000 lb bombs the FB 5 offers, the rockets offer a much different experience compared to the original model. The rockets fire one at a time held on by a Swedish rocket rack, pointing them further down than usual. The average pilot, especially the ones coming from the FB 5, will find this new placement tricky to get used to. But considering the single fire system, a skilled pilot might be able to rack up more destroyed tanks in ground battles compared to the FB 5. If this becomes too sufferable, however, it is recommended to use "Fire rocket salvo" instead to fire off two rockets at once, for a more traditional feel. It's not worth sacrificing accuracy for efficiency when it comes to rockets.
  
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="70%"
−
|-
+
! rowspan="2" | Characteristics
−
! colspan="8" | Characteristics
+
! colspan="2" | Max Speed<br>(km/h at 4,572 m)
−
|-
+
! rowspan="2" | Max altitude<br>(metres)
−
! colspan="8" | ''Stock''
 
−
|-
 
−
! colspan="2" | Max Speed<br>(km/h at ?,??? m)
 
−
! rowspan="2" | Max altitude<br>(meters)
 
 
! 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
 
−
|-
 
−
| ??? || ??? || {{Specs|ceiling}} || ??.? || ??.? || ?.? || ?.? || ???
 
−
|-
 
−
! colspan="8" | ''Upgraded''
 
 
|-
 
|-
−
! colspan="2" | Max Speed<br>(km/h at ?,??? m)
+
! AB !! RB !! AB !! RB !! AB !! RB
−
! rowspan="2" | Max altitude<br>(meters)
 
−
! colspan="2" | Turn time<br>(seconds)
 
−
! colspan="2" | Rate of climb<br>(meters/second)
 
−
! rowspan="2" | Take-off run<br>(meters)
 
 
|-
 
|-
−
! AB
+
! Stock
−
! RB
+
| 841 || 814 || rowspan="2" | {{Specs|ceiling}} || 24.8 || 25.6 || 17.5 || 16.4 || rowspan="2" | 650
−
! AB
 
−
! RB
 
−
! AB
 
−
! RB
 
 
|-
 
|-
−
| ??? || ??? || {{Specs|ceiling}} || ??.? || ??.? || ?? || ?? || ???
+
! Upgraded
 +
| 917 || 882 || 23.8 || 24.0 || 27.0 || 22.0
 
|-
 
|-
 
|}
 
|}
  
 
==== Details ====
 
==== Details ====
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
−
! colspan="5" | Features
+
! colspan="6" | Features
 
|-
 
|-
−
! Combat flaps
+
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
−
! Take-off flaps
 
−
! Landing flaps
 
−
! Air brakes
 
−
! Arrestor gear
 
 
|-
 
|-
−
| X || X || X || X || X    <!-- ✓ -->
+
| ✓ || ✓ || ✓ || ✓ || X || X    <!-- ✓ -->
 
|-
 
|-
 
|}
 
|}
  
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
−
! colspan="5" | Limits
+
! colspan="7" | Limits
 
|-
 
|-
−
! rowspan="2" | Wing-break speed<br>(km/h)
+
! rowspan="2" | Wings (km/h)
−
! rowspan="2" | Gear limit<br>(km/h)
+
! rowspan="2" | Gear (km/h)
−
! rowspan="2" | Combat flaps<br>(km/h)
+
! colspan="3" | Flaps (km/h)
 
! colspan="2" | Max Static G
 
! colspan="2" | Max Static G
 
|-
 
|-
−
! +
+
! Combat !! Take-off !! Landing !! + !! -
−
! -
 
 
|-
 
|-
−
| {{Specs|destruction|constructions}} || {{Specs|destruction|chassis}} || ??? || ~?? || ~??
+
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 495 || 464 || 300 || ~10 || ~5
 
|-
 
|-
 
|}
 
|}
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{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
−
! colspan="4" | Optimal velocities
+
! colspan="4" | Optimal velocities (km/h)
 
|-
 
|-
−
! Ailerons<br>(km/h)
+
! Ailerons !! Rudder !! Elevators !! Radiator
−
! Rudder<br>(km/h)
 
−
! Elevators<br>(km/h)
 
−
! Radiator<br>(km/h)
 
 
|-
 
|-
−
| < ??? || < ??? || < ??? || > ???
+
| < 550 || < 600 || < 600 || N/A
 
|-
 
|-
 
|}
 
|}
  
 +
==== Engine performance ====
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
−
! colspan="3" | Compressor (RB/SB)
+
! colspan="3" | Engine
 +
! colspan="5" | Aircraft mass
 +
|-
 +
! colspan="2" | Engine name || Number
 +
! colspan="2" | {{Annotation|Basic mass|Mass of the aircraft with pilot and engine oil, but no fuel or weapons load}} || colspan="3" | Wing loading (full fuel)
 +
|-
 +
| colspan="2" | de Havilland Goblin 3 || 1
 +
| colspan="2" | 3,502 kg || colspan="3" | 194 kg/m<sup>2</sup>
 +
|-
 +
! colspan="3" | Engine characteristics
 +
! colspan="4" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br>Weight
 +
|-
 +
! Weight (each) || colspan="2" | Type
 +
! 10m fuel || 20m fuel || 30m fuel || 35m fuel
 
|-
 
|-
−
! colspan="3" | Setting 1
+
| 705 kg || colspan="2" | Centrifugal-flow turbojet
 +
| 3,866 kg || 4,179 kg || 4,517 kg || 4,715 kg || 5,606 kg
 
|-
 
|-
−
! Optimal 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.}}
−
! 100% Engine power
+
! colspan="5" | Thrust to weight ratio @ 0 m (100%)
−
! WEP Engine power
 
 
|-
 
|-
−
| ?,??? m || ??? hp || N/A
+
! Condition || 100% || WEP
 +
! 10m fuel || 20m fuel || 30m fuel || 35m fuel || MTOW
 +
|-
 +
| ''Stationary'' || 1,410 kgf || N/A
 +
| 0.36 || 0.34 || 0.31 || 0.30 || 0.25
 +
|-
 +
| ''Optimal'' || 1,410 kgf<br>(0 km/h) || N/A
 +
| 0.36 || 0.34 || 0.31 || 0.30 || 0.25
 
|-
 
|-
 
|}
 
|}
  
 
=== 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.''
+
{{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.'' -->
 +
 
 +
* 38 mm Bulletproof glass - Armoured windscreen
 +
* 12.7 mm Steel - Armour plate behind the pilot's head
 +
* 3 mm Steel - Armour plate under the engine
 +
 
 +
[[File:Armour values J28B.png|thumb|Armour found inside the A28B]]
 +
The A28B has the same armour as the Vampire FB 5 as well as the Italian [[Vampire FB 52A]]. Despite being dangerous in a head-on due to the beefed-up guns, a A28B should never fully commit to a head-on engagement, the bulletproof glass will, however, save the pilot most of the time. The tail section is not easily saved though. The twin-boom makes it twice as likely to hit the traction of control surfaces. This leaves the A28B completely useless usually resulting in abandonment of the aircraft, which should be avoided at all costs.
 +
 
 +
=== 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|??? (?.?? mm)}}
+
<!-- ''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/47B (20 mm)}}
 +
 
 +
The '''''{{PAGENAME}}''''' is armed with:
 +
 
 +
* 4 x 20 mm Akan m/47B cannons, chin-mounted (150 rpg = 600 total)
  
−
The '''''{{PAGENAME}}''''' is armed with:-->
+
The 20 mm m/47B cannons found on the {{PAGENAME}} are fairly unique, as it's the only vehicle in the game carrying this specific version. The gun is identical to the British [[Hispano Mk.V (20 mm)|Hispano Mk.V]] found on the [[Vampire FB 5|British Vampire]]. Ammunition count and fire-rate are identical, but the belt composition differs. While the British guns use shells that lack tracers, along with less explosive, the Swedish HEF-T, and AP-T are the only two rounds available, resulting in every round being visible. This can seem overwhelming, but considering the amount of damage the {{PAGENAME}} deals in a single burst compared to the Hispano, the trade-off is worth it.
  
 
=== Suspended armament ===
 
=== Suspended armament ===
−
''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.''
+
{{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.'' -->
 +
{{main|psrak m/49A|srak m/51}}
  
−
=== Defensive armament ===
+
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
−
''Defensive armament with turret machine guns or cannons, crewed by gunners. Examine the number of gunners and what belts or drums are better to use. If defensive weaponry is not available, remove this subsection.''
+
 
 +
* Without load
 +
* 8 x psrak m/49A rockets
 +
 
 +
The {{PAGENAME}} is incredibly feared in ground-battles due to the devastating m/49A rockets it carries. These rockets lack a high explosive-mass, especially compared to high-explosive rockets similar to it, such as the British [[RP-3]]. However, the Swedish rocket works more in a shape-charge matter, giving it high penetration values, and post-penetration damage. This means the {{PAGENAME}} is more likely to ammo-rack opponents than similar analogs, as the {{PAGENAME}} can engage opponents from any angle it wishes
 +
 
 +
* 8 x srak m/51 rockets
 +
 
 +
Although visually indistinguishable from the m/49A, the m/51 rockets are very different in behaviour from their older counterpart. These rockets are high-explosive, similar to how the British RP-3 behaves. The rocket lacks significant penetration, even when compared to the RP-3, making them quite redundant against tanks. They can be effectively used against lightly armoured vehicles, however, as the explosive spreads more towards the side rather than just forwardly. The rockets can also be used against aerial opponents, especially bombers. Since this rocket has a 10 m/s faster travel-speed compared to the m/49A before it, they're slightly more useful when applied against aerial targets, even if they're less than ideal for this purpose.
 +
 
 +
{{Notice|The {{PAGENAME}} features a rocket-rack pointing all suspended weapons ~5° downwards. This forces pilots to fly the plane horizontal to avoid missing the target but allows the {{PAGENAME}} to engage tanks without pointing its nose down a lot.}}
  
 
== Usage in battles ==
 
== Usage in battles ==
−
''Describe the tactics of playing in an aircraft, the features of using vehicles in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''
+
<!-- ''Describe the tactics of playing in 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'''
 +
 
 +
* Minimum fuel or 20 minutes - depends on map size
 +
* Ground targets for 20 mm belts
 +
* Climb slightly at ~10°
 +
* Boom & Zoom opponents, dogfight when necessary
 +
 
 +
A A28B pilot should always be aware of his/her speed and altitude, or energy in more advanced terms. To avoid enemies with superior engine power using it as a boom and zoom target, a A28B pilot should use altitude to their advantage. Since the Vampire platform is bad at building up energy, the pilot should store as much energy as possible for when the battle begins. Before engaging targets, it can also be useful to always keep a speed of at least 400 km/h to limit the number of options an enemy has to counterattack. This also helps the A28B to swiftly turn around and begin a dogfight if the opponent commits to one. This playstyle can be applied to every Vampire plane in the game since they perform mostly the same. The A28B has to watch out for [[Ho 229 V3]] players, however, since they can outmatch the A28B in turning. A good way to counter the Horten is to make it bleed speed. Forcing it to turn once or twice and then extending away from the enemy.
  
−
=== Manual Engine Control ===
+
A playstyle close to that of a propeller-driven aircraft can be applied, where energy is the key to survival. The A28B has quite the firepower compared to the other Vampire models. This can reward players who can safely head-on from a distance and then avoid incoming shots from the enemy. This will usually result in a critical hit or straight-up destruction if the enemy doesn't also avoid. The fired rounds are quite deadly and require less gun-time compared to the British counterpart. This gives the A28B an overall higher chance of surviving since it can afford to spend less time on each target. A pilot comfortable with their aim will easily outsmart opponents and make them think twice before engaging in a future dogfight with a {{PAGENAME}}.
−
{| class="wikitable" style="text-align:center"
+
 
−
|-
+
'''Ground Realistic battles'''
−
! colspan="7" | MEC elements
+
 
−
|-
+
* Minimum fuel, 8 x m/49A rockets
−
! rowspan="2" | Mixer
+
* Ground targets for 20 mm belts
−
! rowspan="2" | Pitch
+
* Attack opponents from low altitude
−
! colspan="3" | Radiator
+
* Prioritize aerial opponents
−
! rowspan="2" | Supercharger
+
 
−
! rowspan="2" | Turbocharger
+
The {{PAGENAME}} is the ultimate CAS plane for Sweden at the BR range it sits at. The Vampire platform is incredibly manoeuvrable which allows for safe attacks against ground targets, and the high agility is incredibly helpful against propeller-driven opponents. Equipping eight m/49A rockets does hinder the performance slightly, but are one of the most lethal rockets found at this BR. Thanks to them being a tier I modification, having a potent {{PAGENAME}} isn't difficult to achieve. Make sure to engage targets at low altitude, avoiding any form of SPAA, as the {{PAGENAME}} is required to fly straight during approaches, due to the difficulty of aiming. Make sure to aim the m/49 rockets in tightly packed crew compartments, and ammunition stowage, similar to how you would typically fire a HEATFS round. This is why broadside engagements are more effective, as having a larger target profile allows for increased accuracy.
−
|-
 
−
! Oil
 
−
! Water
 
−
! Type
 
−
|-
 
−
| Not controllable || rowspan="2" | Not controllable<br>Not auto controlled || rowspan="2" | Not controllable<br>Auto control available || rowspan="2" | Not controllable<br>Auto control available || rowspan="2" | Separate || rowspan="2" | Not controllable<br>1 gear || rowspan="2" | Not controllable
 
−
|-
 
−
|}
 
  
−
=== Modules ===
+
The rockets aren't the only thing the {{PAGENAME}} makes use of. The 20 mm cannons have plenty of ammunition and allow the plane to deal with SPAA from longer distances. The ground-targets belt penetrates most SPAA, allowing the {{PAGENAME}} to save the m/49A rockets for tanks instead. The guns are capable of damaging engine decks, especially on tanks such as the British [[Centurion (Family)|Centurion]] or German [[Panther tank (Family)|Panther]]. Against aerial targets the {{PAGENAME}} performs ideal as always, damaging most opponents in a single spray. Always make sure to deal with these opponents first, as even if they pose no threat to the {{PAGENAME}}, they most definitely threaten its teammates.
−
{| class="wikitable"
 
−
! colspan="1" | Tier
 
−
! colspan="2" | Flight performance
 
−
! colspan="1" | Survivability
 
−
! colspan="2" | Weaponry
 
−
|-
 
−
| I
 
−
| Fuselage repair
 
−
| Radiator
 
−
|
 
−
|
 
−
|
 
−
|-
 
−
| II
 
−
|
 
−
| Compressor
 
−
| Airframe
 
−
|
 
−
|
 
−
|-
 
−
| III
 
−
| Wings repair
 
−
| Engine
 
−
|
 
−
|
 
−
|
 
−
|-
 
−
| IV
 
−
|
 
−
|
 
−
| Cover
 
−
|
 
−
|
 
−
|-
 
−
|}
 
  
 
=== 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:'''
−
*
+
 
 +
* Great turning and dogfighting capabilities
 +
* Stronger guns than the British/Italian counterpart
 +
* Effective air-brakes that generate lift once deployed
 +
* Decent ammo count
 +
* Easy to land
 +
* Powerful rockets with 500 mm penetration
  
 
'''Cons:'''
 
'''Cons:'''
−
*
+
 
 +
* Slow top speed
 +
* Poor rate of climb
 +
* Low gun placement forcing pilots to aim higher than usual
 +
* Weak tail section that often suffers damage from enemy fire
 +
* Retains energy poorly
  
 
== 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 Swedish air force carefully studied what was happening at the Fronts in WWII, and by 1944 it was already obvious that the propeller era was coming to a close. By early 1945, the Swedes had already begun a project to power the Saab J21 with a ramjet. However, it seemed this project would take far too long. By autumn of 1945, the J29 project was also beginning to take shape. But even this project wouldn't take to the skies until 1949, so a foreign design had to do until then.
 +
 
 +
The British de Havilland Vampire was one of the first jet-powered fighter planes to enter the market, and Sweden was very interested in this design. In early 1946, Sweden ordered 70 Vampire F Mk 1 models designated J28A, thus becoming one of the first customers of the Vampire. This version was mostly used as practice for the new era of jet-driven aircraft. But the Swedes became fond of the design. So when the export version of the Vampire FB 5 entered the market known as the Mk 50, Sweden was very interested and orders started in 1949. This version was to be known as the J28B or A28B depending on suspended armaments. This version differed from the Mk 1 by having a renewed, rounder tail section, and a lower placed elevator. The engine was upgraded from the RM1 to the RM1A that was now produced by SFA (Svenska flygmotor AB) in Sweden and delivered to de Havilland in Britain for installation. The main armament was also changed from the Hispano Mk II to the more potent Hispano Mk V. By 1952, 310 J28B Vampires had been delivered to Sweden. 12 of these would be rebuilt as a two-seat trainer, known as the J28C-3.
  
 
== Media ==
 
== Media ==
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== See also ==
 
== See also ==
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''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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* ''reference to the series of the aircraft;''
 
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* [[Vampire FB 5]]
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* [[Vampire FB 52A]]
  
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* [[F3D-1]]
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* [[Ho 229 V3]]
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* [[R2Y2 Kai V1]]
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* [[R2Y2 Kai V2]]
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* [[R2Y2 Kai V3]]
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* [[J21RA]]
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* [[A21RB]]
  
 
== External links ==
 
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* [[wikipedia:De_Havilland_Vampire|[Wikipedia] De Havilland Vampire]]
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* [https://aef.se/Flygvapnet/Notiser/J28A,_B,_C_Vampire_notis_2.htm [aef.se<nowiki>]</nowiki> De Havilland Vampire - Flygvapnets första jetflygplan]
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* [https://svfplhist.home.blog/fpl-28-i-flygvapnet/ [svfplhist.home.blog<nowiki>]</nowiki> - Fpl 28 - I flygvapnet]
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* [https://forum.warthunder.com/index.php?/topic/262866-de-havilland-vampire-fb5/ Official data sheet - more details about the performance]
  
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[[Category:Sweden jet aircraft]]
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{{AirManufacturer deHavilland}}
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{{Sweden jet aircraft}}

Latest revision as of 16:16, 4 January 2024

Introducing Wiki 3.0
A28B
vampire_fb5_j28b.png
GarageImage A28B.jpg
360://https://old-wiki.warthunder.com/images/8/8d/Cockpit_vampire_fb5_j28b.jpg
A28B
Sweden flag.png Sweden
V Rank
Battle rating:
AB RB SB
7.7 8.0 7.7
Class:
Research:95 000 Specs-Card-Exp.png
Purchase:270 000 Specs-Card-Lion.png

Description

The A28B was a Swedish jet fighter. The A 28B is an export version of a British De Havilland Vampire fighter bomber jet. The A 28B was based on the later Vampire FB 5 and procured in 1949 as J 28B with the final aircraft delivered in 1952 marking the end of piston powered fighter aircraft in Flygvapnet inventory. The Vampires were retired from their role of a fighters in 1956 and replaced by J 29 and J 34. The J 28B were later delegated into attacker role and redesignated A 28B.

The A 28B was introduced in Update 1.95 "Northern Wind".The Vampire family is known for its great dogfighting capabilities, meaning the A28B can comfortably fend off several opponents at once if controlled by a skillful pilot. This aerial performance is given at the cost of engine power. The acceleration of the A 28B is very weak so superprops won´t have hard time catching up to a slow Vampire that bled its speed in a dogfight.

General info

Flight performance

Air brakes
Allows you to dramatically reduce the flight speed by releasing special flaps
Max speed
at 4 572 m882 km/h
Turn time24 s
Max altitude10 668 m
Enginede Havilland Goblin 3
TypeJet
Cooling systemAir
Take-off weight6 t

The A28B performs well at low altitude where it easily outturns most opponents it faces. Thanks to the excellent flaps and air brakes, a pilot aware of his/her energy can fend off anyone that picks a fight. The flaps can be utilised at various speeds to outturn any enemy at any time. Dogfights are where the Vampire platform shines, it is a highly effective fighter with its relatively light airframe and smooth controls. Although the power is lacklustre, a pilot aware of his/her surroundings will have no difficulty avoiding incoming enemies. This lack of engine power will, however, cripple the A28B when it comes to acceleration. A Vampire tends to lose a lot of speed when engaged in turning. So gaining it back to defend itself against new opponents becomes a hassle. And even if a A28B pilot manages to get their speed up, catching a target will be close to impossible with a slow top speed. This lack of power hinders the A28B in many ways, mostly related to energy. This is why "Vamp" pilots are advised to climb at the beginning of a match, despite the lack of a decent climb rate.

The Aiming reticle of the Swedish m/51 rockets.

The A28B performs identically to the Vampire FB 5 which should not come as a surprise. The firepower is what makes them different, however. The A28B is outfitted with the Swedish Akan m/47B (short for "Automatkanon"), which is the Swedish designation of the British Hispano Mk.V, although the calibre and fire rate are the same, the burst mass is larger. This has to do with the Swedish ammunition. The Swedish ammo type contains more TNT and is fully tracer equipped, meaning stealth isn't an option. Despite this downside, the guns perform closer to the American AN/M3 guns instead of the British Hispanos, making the A28B the most effective Vampire in regards to firepower. The A28B is also outfitted with several types of anti-tank and anti-ship rockets. Despite lacking the large 1,000 lb bombs the FB 5 offers, the rockets offer a much different experience compared to the original model. The rockets fire one at a time held on by a Swedish rocket rack, pointing them further down than usual. The average pilot, especially the ones coming from the FB 5, will find this new placement tricky to get used to. But considering the single fire system, a skilled pilot might be able to rack up more destroyed tanks in ground battles compared to the FB 5. If this becomes too sufferable, however, it is recommended to use "Fire rocket salvo" instead to fire off two rockets at once, for a more traditional feel. It's not worth sacrificing accuracy for efficiency when it comes to rockets.

Characteristics Max Speed
(km/h at 4,572 m) 		Max altitude
(metres) 		Turn time
(seconds) 		Rate of climb
(metres/second) 		Take-off run
(metres)
AB RB AB RB AB RB
Stock 841 814 10668 24.8 25.6 17.5 16.4 650
Upgraded 917 882 23.8 24.0 27.0 22.0

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 + -
888 330 495 464 300 ~10 ~5
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 550 < 600 < 600 N/A

Engine performance

Engine Aircraft mass
Engine name Number Basic mass Wing loading (full fuel)
de Havilland Goblin 3 1 3,502 kg 194 kg/m2
Engine characteristics Mass with fuel (no weapons load) Max Takeoff
Weight
Weight (each) Type 10m fuel 20m fuel 30m fuel 35m fuel
705 kg Centrifugal-flow turbojet 3,866 kg 4,179 kg 4,517 kg 4,715 kg 5,606 kg
Maximum engine thrust @ 0 m (RB / SB) Thrust to weight ratio @ 0 m (100%)
Condition 100% WEP 10m fuel 20m fuel 30m fuel 35m fuel MTOW
Stationary 1,410 kgf N/A 0.36 0.34 0.31 0.30 0.25
Optimal 1,410 kgf
(0 km/h) 		N/A 0.36 0.34 0.31 0.30 0.25

Survivability and armour

Crew1 person
Speed of destruction
Structural888 km/h
Gear330 km/h
  • 38 mm Bulletproof glass - Armoured windscreen
  • 12.7 mm Steel - Armour plate behind the pilot's head
  • 3 mm Steel - Armour plate under the engine
Armour found inside the A28B

The A28B has the same armour as the Vampire FB 5 as well as the Italian Vampire FB 52A. Despite being dangerous in a head-on due to the beefed-up guns, a A28B should never fully commit to a head-on engagement, the bulletproof glass will, however, save the pilot most of the time. The tail section is not easily saved though. The twin-boom makes it twice as likely to hit the traction of control surfaces. This leaves the A28B completely useless usually resulting in abandonment of the aircraft, which should be avoided at all costs.

Modifications and economy

Repair costBasic → Reference
AB3 236 → 4 608 Sl icon.png
RB8 907 → 12 683 Sl icon.png
SB11 966 → 17 039 Sl icon.png
Total cost of modifications80 000 Rp icon.png
129 600 Sl icon.png
Talisman cost2 000 Ge icon.png
Crew training78 000 Sl icon.png
Experts270 000 Sl icon.png
Aces1 500 Ge icon.png
Research Aces670 000 Rp icon.png
Reward for battleAB / RB / SB
120 / 350 / 600 % Sl icon.png
190 / 190 / 190 % Rp icon.png
Modifications
Flight performance Survivability Weaponry
Mods aerodinamic fuse.png
Fuselage repair
Research:
8 000 Rp icon.png
Cost:
13 000 Sl icon.png
370 Ge icon.png
Mods armor frame.png
Airframe
Research:
6 000 Rp icon.png
Cost:
9 700 Sl icon.png
280 Ge icon.png
Mods jet compressor.png
Compressor
Research:
6 000 Rp icon.png
Cost:
9 700 Sl icon.png
280 Ge icon.png
Mods aerodinamic wing.png
Wings repair
Research:
4 000 Rp icon.png
Cost:
6 500 Sl icon.png
185 Ge icon.png
Mods jet engine.png
Engine
Research:
4 000 Rp icon.png
Cost:
6 500 Sl icon.png
185 Ge icon.png
Mods g suit.png
G-suit
Research:
4 000 Rp icon.png
Cost:
6 500 Sl icon.png
185 Ge icon.png
Mods armor cover.png
Cover
Research:
13 000 Rp icon.png
Cost:
21 000 Sl icon.png
600 Ge icon.png
Mods jet engine extinguisher.png
EFS
Research:
13 000 Rp icon.png
Cost:
21 000 Sl icon.png
600 Ge icon.png
Mods ammo.png
akan_m47_belt_pack
Research:
8 000 Rp icon.png
Cost:
13 000 Sl icon.png
370 Ge icon.png
Mod arrow 1.png
Mods pilon rocket.png
m/49B
Research:
6 000 Rp icon.png
Cost:
9 700 Sl icon.png
280 Ge icon.png
Mod arrow 0.png
Mods weapon.png
akan_m47_new_gun
Research:
4 000 Rp icon.png
Cost:
6 500 Sl icon.png
185 Ge icon.png
Mods pilon rocket.png
m/51
Research:
4 000 Rp icon.png
Cost:
6 500 Sl icon.png
185 Ge icon.png

Armaments

Offensive armament

Weapon 14 x 20 mm Akan m/47B cannon
Ammunition600 rounds
Fire rate750 shots/min
Main article: Akan m/47B (20 mm)

The A28B is armed with:

  • 4 x 20 mm Akan m/47B cannons, chin-mounted (150 rpg = 600 total)

The 20 mm m/47B cannons found on the A28B are fairly unique, as it's the only vehicle in the game carrying this specific version. The gun is identical to the British Hispano Mk.V found on the British Vampire. Ammunition count and fire-rate are identical, but the belt composition differs. While the British guns use shells that lack tracers, along with less explosive, the Swedish HEF-T, and AP-T are the only two rounds available, resulting in every round being visible. This can seem overwhelming, but considering the amount of damage the A28B deals in a single burst compared to the Hispano, the trade-off is worth it.

Suspended armament

List of setups (2)
Setup 14 x 14,5 cm psrak m/49B rockets
4 x 14,5 cm psrak m/49B rockets
Setup 24 x 15 cm srak m/51 rockets
4 x 15 cm srak m/51 rockets
Main articles: psrak m/49A, srak m/51

The A28B can be outfitted with the following ordnance:

  • Without load
  • 8 x psrak m/49A rockets

The A28B is incredibly feared in ground-battles due to the devastating m/49A rockets it carries. These rockets lack a high explosive-mass, especially compared to high-explosive rockets similar to it, such as the British RP-3. However, the Swedish rocket works more in a shape-charge matter, giving it high penetration values, and post-penetration damage. This means the A28B is more likely to ammo-rack opponents than similar analogs, as the A28B can engage opponents from any angle it wishes

  • 8 x srak m/51 rockets

Although visually indistinguishable from the m/49A, the m/51 rockets are very different in behaviour from their older counterpart. These rockets are high-explosive, similar to how the British RP-3 behaves. The rocket lacks significant penetration, even when compared to the RP-3, making them quite redundant against tanks. They can be effectively used against lightly armoured vehicles, however, as the explosive spreads more towards the side rather than just forwardly. The rockets can also be used against aerial opponents, especially bombers. Since this rocket has a 10 m/s faster travel-speed compared to the m/49A before it, they're slightly more useful when applied against aerial targets, even if they're less than ideal for this purpose.

Msg-info.png The A28B features a rocket-rack pointing all suspended weapons ~5° downwards. This forces pilots to fly the plane horizontal to avoid missing the target but allows the A28B to engage tanks without pointing its nose down a lot.

Usage in battles

Air Realistic battles

  • Minimum fuel or 20 minutes - depends on map size
  • Ground targets for 20 mm belts
  • Climb slightly at ~10°
  • Boom & Zoom opponents, dogfight when necessary

A A28B pilot should always be aware of his/her speed and altitude, or energy in more advanced terms. To avoid enemies with superior engine power using it as a boom and zoom target, a A28B pilot should use altitude to their advantage. Since the Vampire platform is bad at building up energy, the pilot should store as much energy as possible for when the battle begins. Before engaging targets, it can also be useful to always keep a speed of at least 400 km/h to limit the number of options an enemy has to counterattack. This also helps the A28B to swiftly turn around and begin a dogfight if the opponent commits to one. This playstyle can be applied to every Vampire plane in the game since they perform mostly the same. The A28B has to watch out for Ho 229 V3 players, however, since they can outmatch the A28B in turning. A good way to counter the Horten is to make it bleed speed. Forcing it to turn once or twice and then extending away from the enemy.

A playstyle close to that of a propeller-driven aircraft can be applied, where energy is the key to survival. The A28B has quite the firepower compared to the other Vampire models. This can reward players who can safely head-on from a distance and then avoid incoming shots from the enemy. This will usually result in a critical hit or straight-up destruction if the enemy doesn't also avoid. The fired rounds are quite deadly and require less gun-time compared to the British counterpart. This gives the A28B an overall higher chance of surviving since it can afford to spend less time on each target. A pilot comfortable with their aim will easily outsmart opponents and make them think twice before engaging in a future dogfight with a A28B.

Ground Realistic battles

  • Minimum fuel, 8 x m/49A rockets
  • Ground targets for 20 mm belts
  • Attack opponents from low altitude
  • Prioritize aerial opponents

The A28B is the ultimate CAS plane for Sweden at the BR range it sits at. The Vampire platform is incredibly manoeuvrable which allows for safe attacks against ground targets, and the high agility is incredibly helpful against propeller-driven opponents. Equipping eight m/49A rockets does hinder the performance slightly, but are one of the most lethal rockets found at this BR. Thanks to them being a tier I modification, having a potent A28B isn't difficult to achieve. Make sure to engage targets at low altitude, avoiding any form of SPAA, as the A28B is required to fly straight during approaches, due to the difficulty of aiming. Make sure to aim the m/49 rockets in tightly packed crew compartments, and ammunition stowage, similar to how you would typically fire a HEATFS round. This is why broadside engagements are more effective, as having a larger target profile allows for increased accuracy.

The rockets aren't the only thing the A28B makes use of. The 20 mm cannons have plenty of ammunition and allow the plane to deal with SPAA from longer distances. The ground-targets belt penetrates most SPAA, allowing the A28B to save the m/49A rockets for tanks instead. The guns are capable of damaging engine decks, especially on tanks such as the British Centurion or German Panther. Against aerial targets the A28B performs ideal as always, damaging most opponents in a single spray. Always make sure to deal with these opponents first, as even if they pose no threat to the A28B, they most definitely threaten its teammates.

Pros and cons

Pros:

  • Great turning and dogfighting capabilities
  • Stronger guns than the British/Italian counterpart
  • Effective air-brakes that generate lift once deployed
  • Decent ammo count
  • Easy to land
  • Powerful rockets with 500 mm penetration

Cons:

  • Slow top speed
  • Poor rate of climb
  • Low gun placement forcing pilots to aim higher than usual
  • Weak tail section that often suffers damage from enemy fire
  • Retains energy poorly

History

The Swedish air force carefully studied what was happening at the Fronts in WWII, and by 1944 it was already obvious that the propeller era was coming to a close. By early 1945, the Swedes had already begun a project to power the Saab J21 with a ramjet. However, it seemed this project would take far too long. By autumn of 1945, the J29 project was also beginning to take shape. But even this project wouldn't take to the skies until 1949, so a foreign design had to do until then.

The British de Havilland Vampire was one of the first jet-powered fighter planes to enter the market, and Sweden was very interested in this design. In early 1946, Sweden ordered 70 Vampire F Mk 1 models designated J28A, thus becoming one of the first customers of the Vampire. This version was mostly used as practice for the new era of jet-driven aircraft. But the Swedes became fond of the design. So when the export version of the Vampire FB 5 entered the market known as the Mk 50, Sweden was very interested and orders started in 1949. This version was to be known as the J28B or A28B depending on suspended armaments. This version differed from the Mk 1 by having a renewed, rounder tail section, and a lower placed elevator. The engine was upgraded from the RM1 to the RM1A that was now produced by SFA (Svenska flygmotor AB) in Sweden and delivered to de Havilland in Britain for installation. The main armament was also changed from the Hispano Mk II to the more potent Hispano Mk V. By 1952, 310 J28B Vampires had been delivered to Sweden. 12 of these would be rebuilt as a two-seat trainer, known as the J28C-3.

Media

Skins

See also

Related development
Similar aircraft

External links


De Havilland Aircraft Company Limited
Fighters  Hornet Mk.I · Hornet Mk.III · Mosquito FB Mk VI · Mosquito FB Mk XVIII
Jet fighters  Vampire F.B.5 · Venom FB.4 · Sea Venom FAW 20 · Sea Vixen F.A.W. Mk.2
Export  ␗Mosquito FB.Mk.26 · ▄Vampire FB 52A(Italy) · ▄Vampire FB 52A(Finland) · A28B

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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