La-7B-20

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

The La-7B-20 in the garage.

The La-7B-20 is a Rank IV Soviet fighter with a battle rating of 5.0 (AB), 5.3 (RB), and 6.0 (SB). It was introduced in Update 1.31.

The main purpose, usage and tactics recommendations

General play style

Vehicle characteristics

Tactics

The key to staying alive in the La-7 series lies in deceiving the enemy. By flying at around 4.5km altitude you present yourself as an easy target for Boom&Zoom aircraft that are flying at higher altitudes. When you spot someone diving at you, break off and evade his burst, while slowly luring him into maneuver combat - this way you will start gaining the edge while the enemy loses his speed and momentum in the turn. Another habit worth developing in the La-7B-20 is ammo conservation - because the available load per gun shrunk compared to the La-7, it is crucial to only take shots that you know will hit and aiming them carefully. This way you stand a bigger chance of critically damaging the enemy airplane. By following those rules you will soon find yourself researching the final Lavochkin piston fighter - the La-9.

The aircraft are placed quite low in the Battle Rating spread, which means that you will still engage Rank III aircraft. The strengths are very good low altitude performance - ideally, you want to engage your enemies at altitudes lower than 5 km - higher up, the power output of the engine reduces drastically, making you an easy target. Aside from the speed, the La-7 possesses very good turning capabilities - while it is not as good a turner as some British and Japanese designs, it can give many German and US aircraft a run for their money.

Specific enemies worth noting

Counter-tactics

Pros and cons

Pros:

  • Excellent low altitude performance (<3000m)
  • Decent maneuverability
  • Great acceleration and climb
  • Good roll rate
  • Centre-mounted cannons

Cons:

  • Poor performance at high altitude (>4000m)
  • Poor maximum dive speed
  • Fast-firing cannons mean less fire time

Specifications

Armaments

Offensive armaments

  • 3 x 20 mm B-20S cannons, nose-mounted (130 rpg = 390 total)

Payloads

  • Without load
  • 2 x 50 kg FAB-50 (forged) bombs
  • 2 x 100 kg FAB-100 (forged) bombs

Armour

  • 55 mm Bulletproof glass in cockpit front.
  • 66 mm Bulletproof glass in cockpit rear.
  • 8.5 mm Steel plate in the pilot's seat.

Engine & mobility

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator


Engine

Name: Shvetsov M-82FN 14-cylinder radial
  • Cooling type: Air
  • Max power: 1402 hp (Stock), ____ hp (Upgraded)
  • Takeoff power: 1684 hp (Stock), ____ hp (Upgraded)
  • Mass: 850 kg
Name: Shvetsov M-82FN 14-cylinder radial
  • Cooling type: Air
  • Max power: 1386 hp (Stock), ____ hp (Upgraded)
  • Takeoff power: 1667 hp (Stock), ____ hp (Upgraded)
  • Mass: 850 kg
Name: Shvetsov M-82FN 14-cylinder radial
  • Cooling type: Air
  • Max power: 1386 hp (Stock), ____ hp (Upgraded)
  • Takeoff power: 1667 hp (Stock), ____ hp (Upgraded)
  • Mass: 850 kg

Stats

Stock
  • Max speed: ___ km/h
    • at height: 6,000 m
  • Max altitude: 10,450 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 348 m

Upgraded

  • Max speed: ___ km/h
    • at height: 6,000 m
  • Max altitude: 10,450 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 348 m
Stock
  • Max speed: ___ km/h
    • at height: 6,000 m
  • Max altitude: 10,450 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 348 m

Upgraded

  • Max speed: ___ km/h
    • at height: 6,000 m
  • Max altitude: 10,450 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 348 m
Stock
  • Max speed: ___ km/h
    • at height: 6,000 m
  • Max altitude: 10,450 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 348 m

Upgraded

  • Max speed: ___ km/h
    • at height: 6,000 m
  • Max altitude: 10,450 m
  • Turn Time: __._ s
  • Rate of Climb: _._ m/s
  • Takeoff run: 348 m

Performance

Warning this is still in the test phase and is probably incorrect. Take information with a grain of salt (data taken from 1.55)




0
1
2
3
4
5
6
7
8
9
10
0
0.4
0.8
1.2
1.6
2
Horsepower in 1000hp
Altitude in 1000m

Supercharger Stage #1: 100%

Supercharger Stage #1: WEP

Supercharger Stage #2: 100%

Supercharger Stage #2: WEP



Modules and improvements

Four upgrades are of importance: New 20mm belts, Compressor, Engine and Engine injection.

History of creation and combat usage

The concept of a new fighter for the Soviet Air Force was pitched in 1943. While the earlier Lavochkin La-5 proved to be one of the best Soviet fighters produced up to that point, the main designer of the La-5, Semyon Lavochkin, felt that it could be improved even further. Work on a completely new fighter began in the early months of 1944. The new fighter was supposed to be an improved version of the La-5 design. The changes included the incorporation of a lighter and more durable metal airframe in place of the earlier wooden one. Other changes included the mounting of a new gunsight and propeller, as well as the strengthening of the landing gear struts and streamlining of the wings. It was to be armed with three Berezin B-20 20mm cannons, however the delay in production meant that most new La-7s were armed with 2 20mm ShVAK cannons, like its predecessor. After more tests, the new fighter was accepted into serial production in late 1944.

In September 1944, the first La-7s found their way onto the front lines with the 63rd Guard Fighter Aviation Corps. The reception of the new fighter was warm - it was faster and more maneuverable than the La-5, which meant it could more efficiently tackle the most common German fighter the Soviets faced: the Messerschmitt Bf109G. In certain circumstances, the speed allowed the Soviet pilots to intercept Fw190 fighter-bombers - a feat impossible to achieve for other Soviet fighters like the Yak-3. The main critiques of the design were considered to be the engine reliability and armament - the twin 20mm ShVAK cannons were judged as inadequate in fights against better armoured Fw190s. Still, the La-7 became one of the most successful Soviet piston fighters of World War II. Soviet ace Ivan Kozhedub scored 17 kills while flying the La-7 - his last one being an Me 262 jet. After the war the La-7 was replaced by the La-9 prop fighter, although many were still used by other communist states as both fighters and trainer aircraft.

Ingame description

@var:description

Screenshots and fan art

Skins and camouflages for the Lavochkin-7B-20 from live.warthunder.com.

Videos

Review
"War Thunder La-7 & La-7 B-20S Gameplay & Review."
by DigitalDigging
Overview
"Dolgushin's La-7 Test Flight & History! (Dev Server Patch 1.49)"
by Viola Games
Gameplay footage
"War Thunder La-7 Gameplay #1"
by Messer Smitt




Additional information (links)

References


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Lavochkin piston Fighters

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la-7b-20.png

Icon-country-sov.png La-7B-20
Nation USSR
Design Family Lavochkin La
Type Fighter
Fighting style Energy Fighting

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Empty Weight ~2838 kg
Empty Weight + fuel ~3141 kg
Takeoff Weight ~3310 kg
Wing Area ~18 m²
# Flap Positions 3
Number of Engines 1
Air Brakes no
Arrestor Gear no
Statistics
Power per Engine 1570 hp
WEP Duration infinite
top speed ~679.97 kph at 6000 m
Climb Rate ~18.51 m/s
Optimal climb velocity ~268.33 kph
Turn Time ~19.54 s
Wing loading (Empty) ~162.00 kg/m²
Characteristics
Empty Weight ~6257 lb
Empty Weight + fuel ~6925 lb
Takeoff Weight ~7297 lb
Wing Area ~189 ft²
# Flap Positions 3
Number of Engines 1
Air Brakes no
Arrestor Gear no
Statistics
Power per Engine 1570 hp
WEP Duration infinite
Top speed ~422.51 mph at 19685 m
Climb Rate 60.73 ft/s
Optimal climb velocity ~166.73 mph
Turn Time 19.54 s
Wing loading (Empty) ~33.18 lb/ft²
Main Weapons
3 x Berezin B20S 130 rpg
Payload Option 1
Without load Clean Plane
Payload Option 2
2 x 💣 50 kg FAB-50 Bomb
Payload Option 3
2 x 💣 100 kg FAB-100 Bomb
Limits
Max Speed limit 735 kph
Gear limit 320 kph
Combat Flaps 530 kph
Max static +G's ~21
Max static -G's ~21
Optimal Velocities
Ailerons <350 kph
Rudder <350 kph
Elevators <440 kph
Radiator >230 kph
Limits
Max Speed limit 457 mph
Gear limit 199 mph
Combat Flaps 329 mph
Max static +G's ~21
Max static -G's ~21
Optimal Velocities
Ailerons <217 mph
Rudder <217 mph
Elevators <273 mph
Radiator >143 mph
Manual Control
Mixer is not controllable
Pitch is controllable
no automatic pitch
Radiator (water) is controllable
Radiator (oil) is not controllable
Oil and water uses combined radiator control
Supercharger is controllable
Turbocharger is not controllable
Compressor settings 1
Optimal Altitude
1550 m
5085 ft
100% Engine power 1670 hp
WEP Engine power 1959 hp
Compressor settings 2
Optimal Altitude
4700 m
15420 ft
100% Engine power 1410 hp
* Warning this is still in the test phase and can be incorrect. Take information with a grain of salt (data from 1.57 initial release)