BI

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BI
bi.png
BI
AB RB SB
6.7 6.7 6.3
Show in game
MARKET

Description

GarageImage BI.jpg


The BI is a gift rank V Soviet jet fighter with a battle rating of 6.7 (AB/RB) and 6.3 (SB). It was introduced during Update "Raining Fire" as a reward for the 2020 Wargame "Strategist" event, and is currently available for sale on the Marketplace.

General info

Flight performance

Characteristics Max Speed
(km/h at 4,500 m)
Max altitude
(metres)
Turn time
(seconds)
Rate of climb
(metres/second)
Take-off run
(metres)
AB RB AB RB AB RB
Stock 793 787 12000 21.2 21.2 84.9 79.4 400
Upgraded 807 800 20.8 21.0 116.4 100.0

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear Drogue chute
X X X X X
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
920 420 N/A N/A 320 ~9 ~3
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 400 < 410 < 550 N/A

Engine performance

Engine Aircraft mass
Engine name Number Basic Mass Wing loading (full fuel)
Isaev D-1a 1 924 kg 233 kg/m2
Engine characteristics Mass with fuel (no weapons load) Max Takeoff
Weight
Weight (each) Type 0m fuel 1m fuel
300 kg Liquid-fuel rocket 1,134 kg 1,629 kg 1,650 kg
Maximum engine thrust @ 0 m (RB / SB) Thrust to weight ratio @ 0 m (100%)
Condition 100% WEP 0m fuel 1m fuel MTOW
Stationary 1,121 kgf N/A 0.99 0.69 0.68
Optimal 1,121 kgf
(any speed)
N/A 0.99 0.69 0.68

Survivability and armour

  • 5.5 mm steel behind the pilot.
  • 5.5 mm steel plate installed in the nose.
  • 64 mm bulletproof glass in front of pilot
  • Self-sealing fuel tanks* (7 under the cannon barrels, 8 behind pilot, 3 in rear fuselage)

*The fuel tanks are cylinder-shaped, not rectangular, like most planes' fuel tanks, allowing for more fuel tanks.

Armaments

Offensive armament

Main article: ShVAK (20 mm)

The BI is armed with:

  • 2 x 20 mm ShVAK cannons, nose-mounted (45 rpg = 90 total)

Usage in battles

The BI is similar to the Me 163 - small amounts of fuel and ammo (low flight endurance) but has astonishing performance, being able to climb 80 degrees vertically. As such it excels in the interceptor role, climbing at a extremely high rate of up to 116.4 meters per second able to shoot down bombers before exhausting its fuel supply and landing again. Don't be rused by its acceleration into thinking it has a high top speed - the wings and elevators will lock up at mach speed: 0. Thus making any manoeuvres and climbs impossible.

Do not try to outrun enemies, in turn fights but instead use your manoeuvrability and acceleration to fight them, your speed & small size will be your only zenith.

How to climb and get best battle endurance with the correct fuel management

To get the longest endurance out of it's limited fuel amount, climb from the airfield at full throttle as you hit 2400 meters, throttle back to 30%, adjust your climb angle this will allow you to travel to 5000 plus meters without burning much of your preciouses rocket fuel. This fuel, you will need for later in the battle. Once you have hit 5000 meters, throttle back to 14% and continue to climb and adjust your climb angle again to roughly XX degrees. You can continue to climb at this angle until you see it fit not to do so.


When you hit the altitude you like, you can throttle back to 0% and just glide, with only minor adjustment to the throttle to keep in you level flight.

Descending

Engaging in combat

Landing

Modules

Tier Flight performance Survivability Weaponry
I Fuselage repair Offensive 20 mm
II Airframe
III Wings repair New 20 mm cannons
IV Engine Cover

Pros and cons

Pros:

  • Amazing acceleration.
  • Great roll rate.
  • Excellent manoeuvrability.
  • Takes off is very fast.
  • Incredible climb rate.
  • Very strong airframe.
  • Very small size, makes successfully engaging it very hard.

Cons:

  • Not very well armoured or crew protection
  • Only has landing flaps
  • Can reach rip speed (Mach 0.81) while travelling in a straight line
  • Very hard to pull out of a dive, due to it's great speed.
  • Maximum fuel load is only 1 minute and 57 seconds.
  • Limited armament, only two ShVAK cannons with 45 rounds each.

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: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

Media

Skins
Videos

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

Paste links to sources and external resources, such as:

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


USSR jet aircraft
Bereznyak-Isayev  BI
Yakovlev  Yak-15 · Yak-15P · Yak-17 · Yak-23 · Yak-28B · Yak-30D · Yak-38 · Yak-38M · Yak-141
Mikoyan-Gurevich  MiG-9 · MiG-9 (l) · MiG-15 · MiG-15bis · MiG-15bis ISH · MiG-17 · MiG-17AS · MiG-19PT
  MiG-21F-13 · MiG-21PFM · MiG-21S (R-13-300) · MiG-21SMT · MiG-21bis
  MiG-23M · MiG-23ML · MiG-23MLD · MiG-27M · MiG-27K
  MiG-29 · MiG-29SMT
Lavochkin  La-174 · La-15 · La-200
Sukhoi  Su-9 · Su-11
  Su-7B · Su-7BKL · Su-7BMK · Su-17M2 · Su-17M4 · Su-22M3
  Su-25 · Su-25BM · Su-25K · Su-25T · Su-25SM3 · Su-39
  Su-27
Ilyushin  IL-28 · IL-28Sh
Tupolev  Tu-14T