Difference between revisions of "B7A2"

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== Description ==
 
== Description ==
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<!--''In the description, the first part needs to 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 screenshot of the vehicle. If the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle it is talking about.''-->
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<!-- ''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
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[[File:GarageImage_B7A2.jpg|450px|thumbnail|left]]
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[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
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{{break}}
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{{Break}}
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The '''B7A2 ''Ryusei''''' is a Rank III Japanese naval bomber with a battle rating of 4.3 (AB/RB) and 4.0 (SB). It was introduced in Update 1.37.  
+
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Japanese bomber {{Battle-rating}}. It was introduced in [[Update 1.37]].
  
−
The B7A2 was designed as a carrier-based dive/torpedo bomber. For an aircraft of its size, it has exceptionally good manoeuvrability, on par with the A6M Zero. Therefore it can be used in the fighter role as well, since its 2 x 20mm cannons perform very well against all other aircraft. When using the B7A2 in either dive or torpedo bombing, it is important to not rely on the B7A2's defensive gunner if an enemy is approaching. The B7A2 can quickly outmaneuver most American and Russian aircraft so use this to your advantage if you're being intercepted. You will then be able to quickly tail your enemy, and be able to engage them with your forward firing cannons. As the aircraft is seen, it is a very big target, with minimal armour. This is why it is important to not rely on your defensive gunner. In addition, the B7A2 does not have a very good climb rate, and works best at lower altitudes. Getting your guns on target can also be a pain, especially when traveling at higher speeds since the B7A2's roll rate is very poor. Most enemies are able to easily out roll the B7A2, giving them a distinct advantage in a dogfight. Nonetheless, many pilots do not expect death to come from a dive bomber.
+
The B7A2 was designed as a carrier-based dive/torpedo bomber. For an aircraft of its size, it has exceptionally good manoeuvrability, on par with the A6M Zero. Therefore it can be used in the fighter role as well, since its two 20 mm cannons perform very well against all other aircraft. When using the B7A2 in either dive or torpedo bombing, it is important to not rely on the B7A2's defensive gunner if an enemy is approaching. The B7A2 can quickly outmanoeuvre most American and Russian aircraft so use this to your advantage if you're being intercepted. You will then be able to quickly tail your enemy, and be able to engage them with your forward firing cannons. As the aircraft is seen, it is a very big target, with minimal armour. This is why it is important to not rely on your defensive gunner. In addition, the B7A2 does not have a very good climb rate, and works best at lower altitudes. Getting your guns on target can also be a pain, especially when traveling at higher speeds since the B7A2's roll rate is very poor. Most enemies are able to easily out roll the B7A2, giving them a distinct advantage in a dogfight. Nonetheless, many pilots do not expect death to come from a dive bomber.
  
−
The B7A2 wields two 20mm Type 99 mk 2 cannons placed in the wings. Since the B7A2 can be used as a multi-purpose aircraft, the B7A2's weapons will also serve those roles. Equipping the ground targets belt for the 20mm cannons can be helpful if attacking targets like light pillboxes or light tanks. The Ryusei is also capable of equipping the "Stealth" belt which is composed entirely of HEF and API shells. This belt is the best choice for air to air combat. The B7A2 pilot should remember to set his or her gun convergence lower than 400 meters to take down enemy fighters effectively. Since the cannons themselves are a fair ways apart from each other on the actual aircraft, having a low gun convergence ensures each round hits a single point on a target.  
+
The B7A2 wields two 20 mm Type 99 mk 2 cannons placed in the wings. Since the B7A2 can be used as a multi-purpose aircraft, the B7A2's weapons will also serve those roles. Equipping the ground targets belt for the 20 mm cannons can be helpful if attacking targets like light pillboxes or light tanks. The Ryusei is also capable of equipping the "Stealth" belt which is composed entirely of HEF and API shells. This belt is the best choice for air to air combat. The B7A2 pilot should remember to set his or her gun convergence lower than 400 meters to take down enemy fighters effectively. Since the cannons themselves are a fair ways apart from each other on the actual aircraft, having a low gun convergence ensures each round hits a single point on a target.
  
 
== General info ==
 
== General info ==
−
=== Flight Performance ===
+
=== Flight performance ===
−
<!--''Describe how the aircraft behaves in the air. Maximum speed, maneuverability, speed 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.''
−
====Stat card====
+
 
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="70%"
−
|-
+
! rowspan="2" | Characteristics
−
! colspan="8" | Characteristics
 
−
|-
 
−
! colspan="8" | ''Stock''
 
−
|-
 
 
! colspan="2" | Max Speed<br>(km/h at 6,550 m)
 
! colspan="2" | Max Speed<br>(km/h at 6,550 m)
−
! rowspan="2" | Max altitude<br>(meters)
+
! rowspan="2" | Max altitude<br>(metres)
 
! colspan="2" | Turn time<br>(seconds)
 
! colspan="2" | Turn time<br>(seconds)
−
! colspan="2" | Rate of climb<br>(meters/second)
+
! colspan="2" | Rate of climb<br>(metres/second)
−
! rowspan="2" |Take-off run<br>(meters)
+
! rowspan="2" | Take-off run<br>(metres)
 
|-
 
|-
−
! AB
+
! AB !! RB !! AB !! RB !! AB !! RB
−
! RB
 
−
! AB
 
−
! RB
 
−
! AB
 
−
! RB
 
−
|-
 
−
| 538 || 527 || 8,260 || 29.4 || 29.8 || 5.4 || 7.2 || 270
 
−
|-
 
−
! colspan="8" | ''Upgraded''
 
−
|-
 
−
! colspan="2" | Max Speed<br>(km/h at 6,550 m)
 
−
! rowspan="2" | Max altitude<br>(meters)
 
−
! colspan="2" | Turn time<br>(seconds)
 
−
! colspan="2" | Rate of climb<br>(meters/second)
 
−
! rowspan="2" |Take-off run<br>(meters)
 
 
|-
 
|-
−
! AB
+
! Stock
−
! RB
+
| 542 || 525 || rowspan="2" | {{Specs|ceiling}} || 28.8 || 29.6 || 7.3 || 7.3 || rowspan="2" | 270
−
! AB
 
−
! RB
 
−
! AB
 
−
! RB
 
 
|-
 
|-
−
| 594 || 565 || 8,260 || 26.7 || 28.0 || 17.7 || 10.4 || 270
+
! Upgraded
 +
| 594 || 565 || 26.7 || 28.0 || 17.7 || 10.4
 
|-
 
|-
 
|}
 
|}
  
−
====Details====
+
==== Details ====
−
{| class="wikitable" style="text-align:center"
+
{| class="wikitable" style="text-align:center" width="50%"
 
|-
 
|-
 
! colspan="5" | Features
 
! colspan="5" | Features
 
|-
 
|-
−
! Combat flap
+
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear
−
! Take-off flap
 
−
! Landing flap
 
−
! Air brakes
 
−
! Arrestor gear
 
 
|-
 
|-
−
| ✓ || ✓ || ✓ || ✓ || ✓  
+
| ✓ || ✓ || ✓ || ✓ || ✓     <!-- ✓ -->
 
|-
 
|-
 
|}
 
|}
  
−
{| 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 flap<br> (km/h)
+
! colspan="3" | Flaps (km/h)
 
! colspan="2" | Max Static G
 
! colspan="2" | Max Static G
 
|-
 
|-
−
! +
+
! Combat !! Take-off !! Landing !! + !! -
−
! -
 
 
|-
 
|-
−
| 680 || 350 || 480 || ~16 || ~16
+
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 480 || 480 || 280 || ~13 || ~13
−
|-
 
−
|}
 
−
 
 
−
{| class="wikitable" style="text-align:center"
 
−
|-
 
−
! colspan="4" | Optimal velocities
 
−
|-
 
−
! Ailerons<br>(km/h)
 
−
! Rudder<br>(km/h)
 
−
! Elevators<br>(km/h)
 
−
! Radiator<br>(km/h)
 
−
|-
 
−
| < 460 || < 460 || < 420 || > 255
 
−
|-
 
−
|}
 
−
 
 
−
{| class="wikitable" style="text-align:center"
 
−
|-
 
−
! colspan="3" | Compressor (RB/SB)
 
−
|-
 
−
! colspan="3" | Setting 1
 
−
|-
 
−
! Optimal altitude
 
−
! 100% Engine power
 
−
! WEP Engine power
 
−
|-
 
−
| 2,000 m || 1,625 hp || 1,895 hp
 
−
|-
 
−
! colspan="3" | Setting 2
 
−
|-
 
−
! Optimal altitude
 
−
! 100% Engine power
 
−
! WEP Engine power
 
−
|-
 
−
| 6,200 m || 1,420 hp || 1,656 hp
 
−
|-
 
−
|}
 
−
 
 
−
====Engine performance====
 
−
{| class="wikitable" style="text-align:center"
 
−
|-
 
−
! colspan="4" | Engine
 
−
|-
 
−
! colspan="3" | Engine Name
 
−
! colspan="3" | Number present
 
−
|-
 
−
| colspan="3" | Nakajima Homare 12 18-cylinder || colspan="1" | 1
 
−
|-
 
−
! colspan="4" | Engine characteristics
 
−
|-
 
−
! colspan="2" | Weight (each)
 
−
! colspan="1" | Type
 
−
! colspan="1" | Cooling
 
−
|-
 
−
| colspan="2" | 830 kg || Radial || Air
 
−
|-
 
−
! colspan="4" | Engine power (Stock)
 
−
|-
 
−
! colspan="1" | Mode
 
−
! colspan="2" | Max
 
−
! colspan="2" | Take-off
 
−
|-
 
−
| ''Arcade'' || colspan="2" | 1,382 hp || colspan="2" | 1,640 hp
 
−
|-
 
−
| ''Realistic/Simulator'' || colspan="2" | 1,367 hp || colspan="2" | 1,624 hp
 
−
|-
 
−
! colspan="4" | Engine power (Upgraded)
 
−
|-
 
−
! Mode
 
−
! colspan="2" | Max
 
−
! colspan="2" | Take-off
 
−
|-
 
−
| ''Arcade'' || colspan="2" | 1,746 hp || colspan="2" | 2,003 hp
 
−
|-
 
−
| ''Realistic/Simulator'' || colspan="2" | 1,540 hp || colspan="2" | 1,797 hp
 
−
|-
 
−
|}
 
−
 
 
−
{| class="wikitable" style="text-align:center"
 
−
|-
 
−
! colspan="4" | WEP Duration
 
−
|-
 
−
! colspan="2" | Arcade
 
−
! colspan="2" | Realistic/Simulator
 
−
|-
 
−
| colspan="2" | 25 seconds || colspan="2" | 5 min 20 seconds
 
 
|-
 
|-
 
|}
 
|}
  
 
=== 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. Describe the armour, if there is any, also mention the vulnerability of other critical aircraft systems.''
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<!-- ''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.'' -->
−
* 13 mm Steel plate in the nose.
+
* 13 mm steel plate in the nose.
  
 
== Armaments ==
 
== 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.''-->
+
<!-- ''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|Type 99 Model 2 navy (20 mm)}}
+
{{main|Type 99 Model 2 (20 mm)}}
  
 
The '''''{{PAGENAME}}''''' is armed with:
 
The '''''{{PAGENAME}}''''' is armed with:
−
 
+
* 2 x 20 mm Type 99 Model 2 cannons, wing-mounted (200 rpg = 400 total)
−
* 2 x 20 mm Type 99 Mk 2 cannon, wing-mounted (200 rpg = 400 total)
 
  
 
=== 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.''-->
+
<!-- ''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|:Category:Suspended armaments|l1=Suspended armaments}}
+
{{main|Navy Type 97 Number 6 (60 kg)|Navy Type 98 Number 25 (250 kg)|Navy Type Number 80 Model 1 (800 kg)|Type 91 Model 3 (850 kg)}}
  
−
The options available for the '''''{{PAGENAME}}''''' are:
+
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
−
 
+
* 10 x 60 kg Navy Type 97 Number 6 bombs (600 kg total)
−
* 10 × 60 kg Navy Type 97 Number 6 ground bombs
+
* 2 x 250 kg Navy Type 98 Number 25 bombs + 4 x 60 kg Navy Type 97 Number 6 bombs (740 kg total)
−
* 2 × 250 kg Type 98 bombs + 4 × 60 kg Navy Type 97 Number 6 ground bombs
+
* 1 x 800 kg Navy Type Number 80 Model 1 bomb (800 kg total)
−
* 1 × 800 kg Navy Type Number 80 Model 1 bomb
+
* 1 x 850 kg Type 91 Model 3 torpedo
−
* 1 × 850 kg Type 91 Mod. 3 torpedo
 
  
 
=== Defensive armament ===
 
=== Defensive armament ===
−
<!--''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.''-->
+
<!-- ''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.'' -->
−
{{main|Type 2 navy (13 mm)}}
+
{{main|Type 2 (13 mm)}}
−
 
 
−
The B7A2 is armed with:
 
  
 +
The '''''{{PAGENAME}}''''' is defended by:
 
* 1 x 13 mm Type 2 machine gun, dorsal turret (1,000 rpg)
 
* 1 x 13 mm Type 2 machine gun, dorsal turret (1,000 rpg)
  
−
== Usage in the 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 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).'' -->
−
The Ryusei is best utilized as a multi-role aircraft, similar to the role the [[Ju 87 D-5]] plays. Once its payload is dropped, the B7A2 becomes a low altitude, low-speed dogfighter similar to an A6M. In realistic battles, the B7A2 is often paired with aircraft such as the [[A6M3]], [[A6M3 mod. 22]], and [[A6M3 mod. 22Ko]]. If unable to shake an enemy off your tail, these "Zeroes" can be relied on as they have impressive low altitude capabilities.  
+
The Ryusei is best utilized as a multi-role aircraft, similar to the role the [[Ju 87 D-5]] plays. Once its payload is dropped, the B7A2 becomes a low altitude, low-speed dogfighter similar to an A6M. In realistic battles, the B7A2 is often paired with aircraft such as the [[A6M3]], [[A6M3 mod. 22]], and [[A6M3 mod. 22Ko]]. If unable to shake an enemy off your tail, these "Zeroes" can be relied on as they have impressive low altitude capabilities.
  
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Payload choice is dependent on target choice. If the target is a light pillbox, for instance, one does not need an 800 kg bomb. Instead, equip either of the other bomb loadout options. The same goes for most ground units, apart from arcade mini bases. The Ryusei is similar to aircraft such as the [[Ki-49-IIa]] in that it can "hover" above an enemy base or airfield, rapidly dropping its payload and diving up to altitude again. Since the B7A2 is a dive bomber, it does not have to be level to drop its payload accurately. The Ryusei's ability to "hover" above enemy mini bases and airfields can be a great help to any arcade battles team. Upgrading the crew reload speed makes this aircraft a potential game-winner, especially when in a squad.  
+
Payload choice is dependent on target choice. If the target is a light pillbox, for instance, one does not need an 800 kg bomb. Instead, equip either of the other bomb loadout options. The same goes for most ground units, apart from arcade mini bases. The Ryusei is similar to aircraft such as the [[Ki-49-IIa]] in that it can "hover" above an enemy base or airfield, rapidly dropping its payload and diving up to altitude again. Since the B7A2 is a dive bomber, it does not have to be level to drop its payload accurately. The Ryusei's ability to "hover" above enemy mini bases and airfields can be a great help to any arcade battles team. Upgrading the crew reload speed makes this aircraft a potential game-winner, especially when in a squad.
  
 
Similar to the [[Ju 87 D-5]], the Ryusei's airspeed is not on par with the aircraft it faces, no matter the game mode. This handicaps the B7A2 to playing solely a support role, only being able to engage the aircraft it can catch. Nonetheless, having a B7A2 on any team, no matter the game mode, never hurts.
 
Similar to the [[Ju 87 D-5]], the Ryusei's airspeed is not on par with the aircraft it faces, no matter the game mode. This handicaps the B7A2 to playing solely a support role, only being able to engage the aircraft it can catch. Nonetheless, having a B7A2 on any team, no matter the game mode, never hurts.
  
−
===Modules===
+
=== Manual Engine Control ===
−
Since the B7A2 is a multi-role aircraft any module research path is viable. Unlocking performance modules will boost survivability and damage potential in dogfights, whereas unlocking armament modules will help with the ground attack. Some of the best modules to unlock are the "engine injection" and "offensive 20mm belts".
 
−
 
 
−
===Manual Engine Control===
 
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
 
! colspan="7" | MEC elements
 
! colspan="7" | MEC elements
 
|-
 
|-
−
! rowspan="2" |Mixer
+
! rowspan="2" | Mixer
−
! rowspan="2" |Pitch
+
! rowspan="2" | Pitch
 
! colspan="3" | Radiator
 
! colspan="3" | Radiator
−
! rowspan="2" |Supercharger
+
! rowspan="2" | Supercharger
−
! rowspan="2" |Turbocharger
+
! rowspan="2" | Turbocharger
 
|-
 
|-
−
! Oil
+
! Oil !! Water !! Type
−
! Water
 
−
! Type  
 
 
|-
 
|-
−
| Controllable || rowspan="2" | Controllable<br>Not automatic pitch || rowspan="2" | Controllable || rowspan="2" | Not controllable || rowspan="2" | Combined || rowspan="2" | Controllable || rowspan="2" | Not controllable
+
| Controllable || Controllable<br>Not auto controlled || Controllable<br>Auto control available || Controllable<br>Auto control available || Separate || Controllable<br>2 gears || Not controllable
 
|-
 
|-
 
|}
 
|}
 +
 +
=== Modules ===
 +
{| class="wikitable"
 +
! Tier
 +
! colspan="2" | Flight performance
 +
! Survivability
 +
! colspan="2" | Weaponry
 +
|-
 +
| I
 +
| Fuselage repair
 +
| Radiator
 +
|
 +
| Turret 13 mm
 +
| 17 3/4 in (mod45)
 +
|-
 +
| II
 +
|
 +
| Compressor
 +
| Airframe
 +
| New 13 mm MGs (turret)
 +
| 12 in (mod30)
 +
|-
 +
| III
 +
| Wings repair
 +
| Engine
 +
|
 +
| Offensive 20 mm
 +
| 14 in (mod35)
 +
|-
 +
| IV
 +
|
 +
| Engine injection
 +
| Cover
 +
| New 20 mm cannons
 +
|
 +
|-
 +
|}
 +
 +
Since the B7A2 is a multi-role aircraft any module research path is viable. Unlocking performance modules will boost survivability and damage potential in dogfights, whereas unlocking armament modules will help with the ground attack. Some of the best modules to unlock are the "Engine injection" and "Offensive 20 mm belts".
  
 
=== Pros and cons ===
 
=== Pros and cons ===
−
<!--''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Do not use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "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:'''
 
* Handling and performance on par with the A6M Reisen
 
* Handling and performance on par with the A6M Reisen
−
* Forward-firing 2 x 20mm cannons
+
* Forward-firing 2 x 20 mm cannons
−
* Defensive 13.2mm gunner for protection
+
* Defensive 13.2 mm gunner for protection
 
* Performs well at low altitudes
 
* Performs well at low altitudes
 
* Can equip a heavy payload
 
* Can equip a heavy payload
Line 255: Line 174:
  
 
== 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 big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ historical reference" (example: https://wiki.warthunder.com/Name-vehicles/historical reference) and add a link to it here using the <code>main</code> template. Be sure to include links to sources at the end of the article.''-->
+
<!-- ''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).'' -->
−
Two-seat carrier-based Aichi B7A2 Ryusei "Shooting Star" or "Meteor" Torpedo/Dive Bomber (Allied reporting name: Grace). The B7A was an answer to a specification for a carrier-based torpedo/dive bomber in 1941. It was intended to replace B6N and D4Y, having an internal and external payload, increased speed and long-range. Some of the design features of the B7A include; inverted gull-wings, conventional fuselage, and tail unit and a four-bladed propeller. During its development, it went through a series of shortcomings, such as the delivery of engines, and an accidental earthquake which destroyed the main factory housing most of the B7A's. Thus not seeing active service until 1944. By this time, there were no aircraft carriers capable of operating the B7A. The last aircraft carrier being the Shinano was sunk 10 days after its commission. The B7A2 was then forced to operate in home-defence operations, seeing limited service.  
+
Two-seat carrier-based Aichi B7A2 Ryusei "Shooting Star" or "Meteor" Torpedo/Dive Bomber (Allied reporting name: Grace). The B7A was an answer to a specification for a carrier-based torpedo/dive bomber in 1941. It was intended to replace B6N and D4Y, having an internal and external payload, increased speed and long-range. Some of the design features of the B7A include; inverted gull-wings, conventional fuselage, and tail unit and a four-bladed propeller. During its development, it went through a series of shortcomings, such as the delivery of engines, and an accidental earthquake which destroyed the main factory housing most of the B7A's. Thus not seeing active service until 1944. By this time, there were no aircraft carriers capable of operating the B7A. The last aircraft carrier being the Shinano was sunk 10 days after its commission. The B7A2 was then forced to operate in home-defence operations, seeing limited service.
  
−
Known as the AM-23 within Aichi, the first prototype was completed and flown in May 1942 which was designated the B7A1 by the Navy. The B7A used the Nakajima NK9C 12 Model radial engine, producing 1,825 hp. This gave the aircraft exceptionally good speed, even when fully loaded with ammunition and bombs. During flight testing, the Navy was very impressed with its performance. Despite it being a very large light bomber, the B7A1 displayed handling and performance comparable to the Mitsubishi's A6M Zero and a further 8 prototypes were ordered. However, with more testing underway, it was noted that the engine (which was experimental as well) suffered teething problems, and the airframe of the aircraft needed modifying structurally. It was not until two years later that the B7A would begin production in 1944.  
+
Known as the AM-23 within Aichi, the first prototype was completed and flown in May 1942 which was designated the B7A1 by the Navy. The B7A used the Nakajima NK9C 12 Model radial engine, producing 1,825 hp. This gave the aircraft exceptionally good speed, even when fully loaded with ammunition and bombs. During flight testing, the Navy was very impressed with its performance. Despite it being a very large light bomber, the B7A1 displayed handling and performance comparable to the Mitsubishi's A6M Zero and a further 8 prototypes were ordered. However, with more testing underway, it was noted that the engine (which was experimental as well) suffered teething problems, and the airframe of the aircraft needed modifying structurally. It was not until two years later that the B7A would begin production in 1944.
  
−
Up until May 1945, 80 B7A2's had been completed. But soon after, a severe earthquake occurred, destroying the factory housing the aircraft that were being assembled. A further 25 more examples were completed by another factory. Throughout the B7A2's service, different variants were planned. Firstly, was an experimental production B7A2, that was fitted with the Nakajima Homare 23 radial engine, producing 2,000 hp. Only 1 was built. Secondly, came the B7A3 Ryusei-Kai. This was to use the Mitsubishi Ha-43 radial engine producing 2,200 hp but it was not built. Lastly, came the B8A1 Mokusei "Planet". This was to have no carrier equipment and no gull wings. In addition, 2 x Type 99 20mm cannons were to be replaced with 2 x Type 5 30mm cannons. The B8A remained on the drawing board before the war ended, with no mock-up even though it was accepted to be built.  
+
Up until May 1945, 80 B7A2's had been completed. But soon after, a severe earthquake occurred, destroying the factory housing the aircraft that were being assembled. A further 25 more examples were completed by another factory. Throughout the B7A2's service, different variants were planned. Firstly, was an experimental production B7A2, that was fitted with the Nakajima Homare 23 radial engine, producing 2,000 hp. Only 1 was built. Secondly, came the B7A3 Ryusei-Kai. This was to use the Mitsubishi Ha-43 radial engine producing 2,200 hp but it was not built. Lastly, came the B8A1 Mokusei "Planet". This was to have no carrier equipment and no gull wings. In addition, 2 x Type 99 20mm cannons were to be replaced with 2 x Type 5 30mm cannons. The B8A remained on the drawing board before the war ended, with no mock-up even though it was accepted to be built.
  
−
In all, 9 B7A1's, and 105 B7A2's were produced. 114 in total.  
+
In all, 9 B7A1's, and 105 B7A2's were produced. 114 in total.
  
 
Katori Naval Air Base, Chiba-Prefecture, Japan, May 1945
 
Katori Naval Air Base, Chiba-Prefecture, Japan, May 1945
Line 268: Line 187:
  
 
Kanogawa-Prefecture, Japan, April 1945
 
Kanogawa-Prefecture, Japan, April 1945
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<br> - ''Yokosuka Naval Air Group
+
<br> - ''Yokosuka Naval Air Group''
  
 
== Media ==
 
== Media ==
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[http://live.warthunder.com/feed/camouflages/?q=%23b7a2 '''Skins''' and camouflages for the B7A2 Ryusei from http://live.warthunder.com]
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<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
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* [http://live.warthunder.com/feed/camouflages/?q=%23b7a2 '''Skins''' and camouflages for the B7A2 Ryusei from http://live.warthunder.com]
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==References==
 
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<references />
 
  
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== Read also ==
+
== See also ==
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* http://www.aviastar.org/air/japan/aichi_b7a.php
+
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
−
* http://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=442
+
* ''reference to the series of the aircraft;''
−
* http://airandspace.si.edu/collections/artifact.cfm?object=nasm_A19630360000
+
* ''links to approximate analogues of other nations and research trees.''
−
* http://www.hyperscale.com/features/2000/graceir_1.htm
 
−
* http://www.hyperscale.com/2013/reviews/kits/sword72069reviewmd_1.htm
 
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* http://fhsw.wikia.com/wiki/Aichi_B7A2_%22Ryusei%22
 
  
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== Sources ==
+
== External links ==
−
''Paste links to sources and external resources, such as:''
+
<!-- ''Paste links to sources and external resources, such as:''
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
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* ''page on aircraft encyclopedia;''
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* ''encyclopedia page on the aircraft;''
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* ''other literature.''
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* ''other literature.'' -->
 +
* [http://www.aviastar.org/air/japan/aichi_b7a.php [aviastar.org<nowiki>]</nowiki> Aichi B7A Ryusei / Grace]
 +
* [http://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=442 [MilitaryFactory.com<nowiki>]</nowiki> Aichi B7A Ryusei (Grace)]
 +
* [https://airandspace.si.edu/collection-objects/aichi-b7a2-ryusei-shooting-star-grace/nasm_A19630360000 [Smithsonian NASM<nowiki>]</nowiki> Aichi B7A2 Ryusei (Shooting Star) GRACE]
 +
* [http://www.hyperscale.com/features/2000/graceir_1.htm [HyperScale.com<nowiki>]</nowiki> Aichi B7A2 Ryusei Kai "Grace"]
 +
* [http://www.hyperscale.com/2013/reviews/kits/sword72069reviewmd_1.htm [HyperScale.com<nowiki>]</nowiki> Aichi B7A2 Ryusei Kai (Grace)]
  
 
{{AirManufacturer Aichi}}
 
{{AirManufacturer Aichi}}
 
{{Japan bombers}}
 
{{Japan bombers}}

Revision as of 09:51, 8 April 2020

Rank VII | Premium | Golden Eagles
Challenger DS Pack
B7A2
b7a2.png
B7A2
Japan flag.png Japan
III Rank
Battle rating:
AB RB SB
3.7 3.7 4.0
Class:
Research:26 000 Specs-Card-Exp.png
Purchase:76 000 Specs-Card-Lion.png
Show in game

Description

GarageImage B7A2.jpg


The B7A2 Ryusei is a rank III Japanese bomber with a battle rating of 3.7 (AB/RB) and 4.0 (SB). It was introduced in Update 1.37.

The B7A2 was designed as a carrier-based dive/torpedo bomber. For an aircraft of its size, it has exceptionally good manoeuvrability, on par with the A6M Zero. Therefore it can be used in the fighter role as well, since its two 20 mm cannons perform very well against all other aircraft. When using the B7A2 in either dive or torpedo bombing, it is important to not rely on the B7A2's defensive gunner if an enemy is approaching. The B7A2 can quickly outmanoeuvre most American and Russian aircraft so use this to your advantage if you're being intercepted. You will then be able to quickly tail your enemy, and be able to engage them with your forward firing cannons. As the aircraft is seen, it is a very big target, with minimal armour. This is why it is important to not rely on your defensive gunner. In addition, the B7A2 does not have a very good climb rate, and works best at lower altitudes. Getting your guns on target can also be a pain, especially when traveling at higher speeds since the B7A2's roll rate is very poor. Most enemies are able to easily out roll the B7A2, giving them a distinct advantage in a dogfight. Nonetheless, many pilots do not expect death to come from a dive bomber.

The B7A2 wields two 20 mm Type 99 mk 2 cannons placed in the wings. Since the B7A2 can be used as a multi-purpose aircraft, the B7A2's weapons will also serve those roles. Equipping the ground targets belt for the 20 mm cannons can be helpful if attacking targets like light pillboxes or light tanks. The Ryusei is also capable of equipping the "Stealth" belt which is composed entirely of HEF and API shells. This belt is the best choice for air to air combat. The B7A2 pilot should remember to set his or her gun convergence lower than 400 meters to take down enemy fighters effectively. Since the cannons themselves are a fair ways apart from each other on the actual aircraft, having a low gun convergence ensures each round hits a single point on a target.

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.

Characteristics Max Speed
(km/h at 6,550 m) 		Max altitude
(metres) 		Turn time
(seconds) 		Rate of climb
(metres/second) 		Take-off run
(metres)
AB RB AB RB AB RB
Stock 542 525 8260 28.8 29.6 7.3 7.3 270
Upgraded 594 565 26.7 28.0 17.7 10.4

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
✓ ✓ ✓ ✓ ✓
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
0 350 480 480 280 ~13 ~13

Survivability and armour

  • 13 mm steel plate in the nose.

Armaments

Offensive armament

Main article: Type 99 Model 2 (20 mm)

The B7A2 is armed with:

  • 2 x 20 mm Type 99 Model 2 cannons, wing-mounted (200 rpg = 400 total)

Suspended armament

Main articles: Navy Type 97 Number 6 (60 kg), Navy Type 98 Number 25 (250 kg), Navy Type Number 80 Model 1 (800 kg), Type 91 Model 3 (850 kg)

The B7A2 can be outfitted with the following ordnance:

  • 10 x 60 kg Navy Type 97 Number 6 bombs (600 kg total)
  • 2 x 250 kg Navy Type 98 Number 25 bombs + 4 x 60 kg Navy Type 97 Number 6 bombs (740 kg total)
  • 1 x 800 kg Navy Type Number 80 Model 1 bomb (800 kg total)
  • 1 x 850 kg Type 91 Model 3 torpedo

Defensive armament

Main article: Type 2 (13 mm)

The B7A2 is defended by:

  • 1 x 13 mm Type 2 machine gun, dorsal turret (1,000 rpg)

Usage in battles

The Ryusei is best utilized as a multi-role aircraft, similar to the role the Ju 87 D-5 plays. Once its payload is dropped, the B7A2 becomes a low altitude, low-speed dogfighter similar to an A6M. In realistic battles, the B7A2 is often paired with aircraft such as the A6M3, A6M3 mod. 22, and A6M3 mod. 22Ko. If unable to shake an enemy off your tail, these "Zeroes" can be relied on as they have impressive low altitude capabilities.

Payload choice is dependent on target choice. If the target is a light pillbox, for instance, one does not need an 800 kg bomb. Instead, equip either of the other bomb loadout options. The same goes for most ground units, apart from arcade mini bases. The Ryusei is similar to aircraft such as the Ki-49-IIa in that it can "hover" above an enemy base or airfield, rapidly dropping its payload and diving up to altitude again. Since the B7A2 is a dive bomber, it does not have to be level to drop its payload accurately. The Ryusei's ability to "hover" above enemy mini bases and airfields can be a great help to any arcade battles team. Upgrading the crew reload speed makes this aircraft a potential game-winner, especially when in a squad.

Similar to the Ju 87 D-5, the Ryusei's airspeed is not on par with the aircraft it faces, no matter the game mode. This handicaps the B7A2 to playing solely a support role, only being able to engage the aircraft it can catch. Nonetheless, having a B7A2 on any team, no matter the game mode, never hurts.

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Controllable Controllable
Not auto controlled 		Controllable
Auto control available 		Controllable
Auto control available 		Separate Controllable
2 gears 		Not controllable

Modules

Tier Flight performance Survivability Weaponry
I Fuselage repair Radiator Turret 13 mm 17 3/4 in (mod45)
II Compressor Airframe New 13 mm MGs (turret) 12 in (mod30)
III Wings repair Engine Offensive 20 mm 14 in (mod35)
IV Engine injection Cover New 20 mm cannons

Since the B7A2 is a multi-role aircraft any module research path is viable. Unlocking performance modules will boost survivability and damage potential in dogfights, whereas unlocking armament modules will help with the ground attack. Some of the best modules to unlock are the "Engine injection" and "Offensive 20 mm belts".

Pros and cons

Pros:

  • Handling and performance on par with the A6M Reisen
  • Forward-firing 2 x 20 mm cannons
  • Defensive 13.2 mm gunner for protection
  • Performs well at low altitudes
  • Can equip a heavy payload
  • Can use bomber spawn and hunt bombers

Cons:

  • Large aircraft, easy target
  • Suffers damage very easily
  • Slow acceleration
  • Lots of bars in the cockpit canopy, hinders visibility
  • Cannot perform high-speed manoeuvres
  • Very slow roll rate
  • Poor rate of climb
  • Gunner is prone to be knocked out

History

Two-seat carrier-based Aichi B7A2 Ryusei "Shooting Star" or "Meteor" Torpedo/Dive Bomber (Allied reporting name: Grace). The B7A was an answer to a specification for a carrier-based torpedo/dive bomber in 1941. It was intended to replace B6N and D4Y, having an internal and external payload, increased speed and long-range. Some of the design features of the B7A include; inverted gull-wings, conventional fuselage, and tail unit and a four-bladed propeller. During its development, it went through a series of shortcomings, such as the delivery of engines, and an accidental earthquake which destroyed the main factory housing most of the B7A's. Thus not seeing active service until 1944. By this time, there were no aircraft carriers capable of operating the B7A. The last aircraft carrier being the Shinano was sunk 10 days after its commission. The B7A2 was then forced to operate in home-defence operations, seeing limited service.

Known as the AM-23 within Aichi, the first prototype was completed and flown in May 1942 which was designated the B7A1 by the Navy. The B7A used the Nakajima NK9C 12 Model radial engine, producing 1,825 hp. This gave the aircraft exceptionally good speed, even when fully loaded with ammunition and bombs. During flight testing, the Navy was very impressed with its performance. Despite it being a very large light bomber, the B7A1 displayed handling and performance comparable to the Mitsubishi's A6M Zero and a further 8 prototypes were ordered. However, with more testing underway, it was noted that the engine (which was experimental as well) suffered teething problems, and the airframe of the aircraft needed modifying structurally. It was not until two years later that the B7A would begin production in 1944.

Up until May 1945, 80 B7A2's had been completed. But soon after, a severe earthquake occurred, destroying the factory housing the aircraft that were being assembled. A further 25 more examples were completed by another factory. Throughout the B7A2's service, different variants were planned. Firstly, was an experimental production B7A2, that was fitted with the Nakajima Homare 23 radial engine, producing 2,000 hp. Only 1 was built. Secondly, came the B7A3 Ryusei-Kai. This was to use the Mitsubishi Ha-43 radial engine producing 2,200 hp but it was not built. Lastly, came the B8A1 Mokusei "Planet". This was to have no carrier equipment and no gull wings. In addition, 2 x Type 99 20mm cannons were to be replaced with 2 x Type 5 30mm cannons. The B8A remained on the drawing board before the war ended, with no mock-up even though it was accepted to be built.

In all, 9 B7A1's, and 105 B7A2's were produced. 114 in total.

Katori Naval Air Base, Chiba-Prefecture, Japan, May 1945
- 752nd Naval Air Group

Kanogawa-Prefecture, Japan, April 1945
- Yokosuka Naval Air Group

Media

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the aircraft;
  • links to approximate analogues of other nations and research trees.

External links


Aichi Aircraft Company, Limited (愛知航空機株式会社)
Bombers  D3A1
  B7A2 · B7A2 (Homare 23)
Recon  E13A1

Japan bombers
Navy 
Carrier-based attack bomber 
B5N  B5N2
B6N  B6N1 · B6N2 · B6N2a
B7A  B7A2 · B7A2 (Homare 23)
Carrier-based dive bomber 
D3A  D3A1
D4Y  D4Y1 · D4Y2 · D4Y3 Ko
Shipboard Observation seaplane 
F1M  F1M2
Land-based Attack bomber 
G4M  G4M1
G5N  G5N1
G8N  G8N1
Flying boat 
H6K  H6K4
H8K  H8K2 · H8K3
Land-based Bomber 
P1Y  P1Y1
Army 
Light  Ki-32
  Ki-48-II otsu
Heavy  Ki-21-Ia · Ki-21-I hei
  Ki-49-I · Ki-49-IIa · Ki-49-IIb · Ki-49-IIb/L
  Ki-67-I Ko · Ki-67-I otsu
Other countries  ▅B-17E

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