B7A2

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B7A2 Ryusei
b7a2.png
AB
RB
SB
General characteristics
Brief
Detailed
4.0/4.3/4.3BR
2 peopleCrew
3.8 tEmpty weight
6.5 tTake-off weight
Flight characteristics
8 260 mCeiling
sec29.7/29.7/28.0Turn Time
148 km/hStalling speed
Nakajima Homare 12Engine
RadialType
airCooling system
Speed of destruction
680 km/hStructural
350 km/hGear
Offensive armament
2 х 20 mm Type 99 Model 2 cannonWeapon 1
400 roundsAmmunition
490 shots/minFire rate
Defensive armament
13 mm Type 2 machine gunTurret
1 000 roundsAmmunition
799 shots/minFire rate
Suspended armament
10 х 60 kg Navy Type 97 Number 6 ground bombSetup 1
4 х 60 kg Navy Type 97 Number 6 ground bomb
2 х 250 kg Navy Type 98 Number 25 bomb
Setup 2
1 х 800 kg Navy Type Number 80 Model 1 bombSetup 3
1 х Type 91 Model 3 torpedo (850 kg)Setup 4
Economy
26 000 Rp icon.pngResearch
100 000 Sl icon.pngPurchase
Sl icon.png4 750 / 6 042/3 190 / 4 057/1 820 / 2 315Repair
29 000 Sl icon.pngCrew training
100 000 Sl icon.pngExperts
500 Ge icon.pngAces
x 1.42 Rp icon.pngReward for battle

Description

GarageImage B7A2.jpg


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 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 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.

General info

Flight Performance

Stat card

Characteristics
Stock
Max Speed
(km/h at 6,550 m)
Max altitude
(meters)
Turn time
(seconds)
Rate of climb
(meters/second)
Take-off run
(meters)
AB RB AB RB AB RB
538 527 8,260 29.4 29.8 5.4 7.2 270
Upgraded
Max Speed
(km/h at 6,550 m)
Max altitude
(meters)
Turn time
(seconds)
Rate of climb
(meters/second)
Take-off run
(meters)
AB RB AB RB AB RB
594 565 8,260 26.7 28.0 17.7 10.4 270

Details

Features
Combat flap Take-off flap Landing flap Air brakes Arrestor gear
Limits
Wing-break speed
(km/h)
Gear limit
(km/h)
Combat flap
(km/h)
Max Static G
+ -
680 350 480 ~16 ~16
Optimal velocities
Ailerons
(km/h)
Rudder
(km/h)
Elevators
(km/h)
Radiator
(km/h)
< 460 < 460 < 420 > 255
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
2,000 m 1,625 hp 1,895 hp
Setting 2
Optimal altitude 100% Engine power WEP Engine power
6,200 m 1,420 hp 1,656 hp

Engine performance

Engine
Engine Name Number present
Nakajima Homare 12 18-cylinder 1
Engine characteristics
Weight (each) Type Cooling
830 kg Radial Air
Engine power (Stock)
Mode Max Take-off
Arcade 1,382 hp 1,640 hp
Realistic/Simulator 1,367 hp 1,624 hp
Engine power (Upgraded)
Mode Max Take-off
Arcade 1,746 hp 2,003 hp
Realistic/Simulator 1,540 hp 1,797 hp
WEP Duration
Arcade Realistic/Simulator
25 seconds 5 min 20 seconds

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.

  • 13 mm Steel plate in the nose.

Armaments

Offensive armament

The B7A2 is armed with:

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

Suspended armament

Main article: Suspended armaments

The options available for the B7A2 are:

  • 10 × 60 kg Navy Type 97 Number 6 ground bombs
  • 2 × 250 kg Type 98 bombs + 4 × 60 kg Navy Type 97 Number 6 ground bombs
  • 1 × 800 kg Navy Type Number 80 Model 1 bomb
  • 1 × 850 kg Type 91 Mod. 3 torpedo

Defensive armament

Main article: Type 2 navy (13 mm)

The B7A2 is armed with:

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

Usage in the 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.

Modules

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

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Controllable Controllable
Not automatic pitch
Controllable Not controllable Combined Controllable Not controllable

Pros and cons

Pros:

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

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

Skins and camouflages for the B7A2 Ryusei from http://live.warthunder.com

References


Read also

Sources

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • page on aircraft encyclopedia;
  • other literature.


Japan bombers
Flying boats  H6K4 · H8K2 · H8K3
Naval  D3A1 · B5N2 · B7A2
Dive  D4Y1 · D4Y2 · D4Y3 Ko · P1Y1 mod. 11
Light  Ki-32
Medium  Ki-21-Ia · Ki-21-I hei · G4M1 · Ki-49-I Donryu · Ki-49-IIa Donryu · Ki-49-IIb Donryu · Ki-49-IIb Donryu /Late · Ki-67-I Ko · Ki-67-I otsu
Heavy  G5N1 Shinzan · G8N1 Renzan · ▅B-17E Flying Fortress
Jet  R2Y2 Keiun-Kai V1 · R2Y2 Keiun-Kai V2 · R2Y2 Keiun-Kai V3