War Thunder Wiki - User contributions [en]

MiG-15bis

2022-06-06T08:28:47Z

U124466052: Added roll rate info while flying in sim

{{About
| about = Soviet jet fighter '''{{PAGENAME}}'''
| usage = other versions
| link = MiG-15 (Family)
}}
{{Specs-Card
|code=mig-15
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Soviet jet fighter {{Battle-rating}}. It has been in the game since the start of the Open Beta Test prior to Update 1.27.

The Mikoyan-Gurevich MiG-15bis is an upgraded variant of the [[MiG-15]] jet fighter. It utilises an improved version of the RD-45 (imported British Rolls–Royce Nene) turbojet engine, the Klimov VK-1, for increased performance. The MiG-15bis also has better ground attack capability with underwing hardpoints for bombs and rockets.

== General info ==
[[File:CockpitImage_MiG-15.jpg|thumbnail|right|The instrument panel on the MiG-15bis.]]

=== Flight performance ===
{{Specs-Avia-Flight}}


The MiG-15bis is an improved and definitive MiG-15 version, the main difference is the improved engine, the Klimov VK-1. Its level speed at sea level was increased by 26 km/h to 1,076 km/h, but it is still lower than many other jets like for example the F-86 series.
The other noticeable change is a huge improvement of thrust-to-weight ratio which increased the acceleration by ~10% and it also has a huge impact on its climb rate, it can reach up to 50 m/s at low altitude with full fuel tanks, making the MiG-15bis one of the best climbing planes compared to other planes at similar battle rating.
Like the previous version, it can not fly at max power for too long or it will start overheating. While decreasing the power to 95% or lower will cool it down for a moment, if you increase it back to 100% it will immediately start overheating again.

The manoeuvrability compared to the previous variant is basically the same, while this version is slightly worse at performing horizontal manoeuvres due to increased weight (by ~100 kg), it is now better at performing vertical loop and other similar manoeuvres because of the better engine. It struggles against other jets due to its overall poor handling characteristics (poor rudder authority at all speeds, poor roll rate at all speeds).
At high speed, it does not suffer as much from compressibility but it is still at best mediocre. The elevator and rudder controls remained the same, so the plane still locks up a lot after reaching transonic speeds. Other features stayed the same: airbrakes help with slowing the plane down when it locks up too much and flaps help significantly increase dogfighting capability at low and medium speeds.

When flying with simulator controls, it is very pleasant to fly: trimming is almost not required when the plane travels at high speed, insufficient roll rate can be improved by using the rudder, but that can also make it slow down. The plane can be stalled out even at high speed, and when above it's critical Angle of Attack it severely wing-stalls, throwing off your aim and/or your heading. Be very carefull to not pull too much from the stick as to not reach this state, remember that it is one of the best rate-fighter of it's tier, so it's best to pull a bit less to keep your speed and not wing-stall as you'll win the position withing a few turns. It's improved roll rate (compared to the normal MiG-15) makes it easier to use against the planes it faces, but it's still less than it's opposition

{| class="wikitable" style="text-align:center" width="70%"
! rowspan="2" | Characteristics
! colspan="2" | Max Speed (km/h at 0 m - sea level)
! rowspan="2" | Max altitude (metres)
! colspan="2" | Turn time (seconds)
! colspan="2" | Rate of climb (metres/second)
! rowspan="2" | Take-off run (metres)
|-
! AB !! RB !! AB !! RB !! AB !! RB
|-
! Stock
| 1,062 || 1,046 || rowspan="2" | {{Specs|ceiling}} || 21.0 || 22.0 || 41.4 || 39.8 || rowspan="2" | 475
|-
! Upgraded
| 1,087 || 1,076 || 20.4 || 20.7 || 59.7 || 50.0
|-
|}

==== Details ====
{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="6" | Features
|-
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
|-
| X || ✓ || ✓ || ✓ || X || X 
|-
|}

{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="7" | Limits
|-
! rowspan="2" | Wings (km/h)
! rowspan="2" | Gear (km/h)
! colspan="3" | Flaps (km/h)
! colspan="2" | Max Static G
|-
! Combat !! Take-off !! Landing !! + !! -
|-
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || N/A || 598 || 450 || ~12 || ~7
|-
|}

{| class="wikitable" style="text-align:center"
|-
! colspan="4" | Optimal velocities (km/h)
|-
! Ailerons !! Rudder !! Elevators !! Radiator
|-
| < 600 || < 700 || < 750 || N/A
|-
|}

==== Engine performance ====
{| class="wikitable" style="text-align:center"
|-
! colspan="3" | Engine
! colspan="4" | Aircraft mass
|-
! colspan="2" | Engine name || Number
! colspan="2" | Empty mass || colspan="2" | Wing loading (full fuel)
|-
| colspan="2" | Klimov VK-1 || 1
| colspan="2" | 3,648 kg || colspan="2" | 233 kg/m2
|-
! colspan="3" | Engine characteristics
! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff Weight
|-
! Weight (each) || colspan="2" | Type
! 8m fuel || 20m fuel || 28m fuel
|-
| 892 kg || colspan="2" | Centrifugal-flow turbojet
| 3,980 kg || 4,478 kg || 4,810 kg || 5,485 kg
|-
! 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.}}
! colspan="4" | Thrust to weight ratio @ 0 m (100%)
|-
! Condition || 100% || WEP
! 8m fuel || 20m fuel || 28m fuel || MTOW
|-
| ''Stationary'' || 2,450 kgf || N/A
| 0.62 || 0.55 || 0.51 || 0.45
|-
| ''Optimal'' || 2,450 kgf (0 km/h) || N/A
| 0.62 || 0.55 || 0.51 || 0.45
|-
|}

=== Survivability and armour ===
{{Specs-Avia-Armour}}


* 10 mm steel armour plates in front of the cockpit and behind the pilot's head rest.
* 6 mm steel armour under the pilot's seat.
* 64 mm bulletproof front windshield.
* Self-sealing fuel tanks behind the pilot and under the jet engine nozzle.
* Jet engine located in the rear of the aircraft, pilot seated in front.

=== Modifications and economy ===
{{Specs-Economy}}

It is recommended to obtain the modifications in the following order: Compressor > New boosters > Offensive 37 mm > Wings repair > Engine > G-suit > New 37 mm cannons > Cover > Offensive 23 mm > New 23 mm cannons > Airframe > Fuselage repair > Suspended weapons

== Armaments ==
{{Specs-Avia-Armaments}}
=== Offensive armament ===
{{Specs-Avia-Offensive}}

{{main|N-37D (37 mm)|NR-23 (23 mm)}}

The '''''{{PAGENAME}}''''' is armed with:

* 1 x 37 mm N-37D cannon, chin-mounted (40 rpg)
* 2 x 23 mm NR-23 cannons, chin-mounted (80 rpg = 160 total)

In line with its originally designed role of bomber interception, the MiG-15bis is armed with three powerful nose-mounted autocannons. The 37 mm N-37D cannon is particularly noteworthy, as even a small number of hits are usually fatal to any aircraft unfortunate enough to be on the receiving end, with the twin 23 mm NR-23 cannons also being quite respectable in terms of lethality.

The trade-off is that these cannons do not have large ammunition reserves, especially compared to the American planes armed with heavy machine guns, and it is very easy to run out of ammunition without careful aim. In addition, the N-37D has a significantly lower muzzle velocity than the NR-23, with a more pronounced ballistic arc. This makes obtaining hits with both types of cannon at the same time quite challenging; using only the 37 mm or the 23 mm cannons at one time may be more efficient with regards to ammunition usage.

=== Suspended armament ===
{{Specs-Avia-Suspended}}

{{main|FAB-100M-43 (100 kg)|FAB-250M-46 (250 kg)|S-5K|S-5M|S-21}}

The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:

* Without load
* 2 x 100 kg FAB-100M-43 bombs (200 kg total)
* 2 x 250 kg FAB-250M-46 bombs (500 kg total)
* 16 x S-5K rockets
* 16 x S-5M rockets
* 2 x S-21 rockets

The MiG-15bis is capable of carrying up to 500 kg of bombs on underwing hardpoints. While this pales in comparison to the American or British fighter-bombers, it is enough for taking out isolated ground targets, if needed.

The S-5M HE rockets are most effective against light ground units, while the S-5K HEAT rockets are capable of penetrating the top armour of most vehicles.

The massive S-21 rocket has a considerable blast radius, and a single hit on a tank is usually fatal. The rocket may also be set with a distance fuse (up to 1,000 m), which can be very effective against large aircraft, such as bombers, or tightly bunched groups of smaller aircraft.

== Usage in battles ==

In-game, the MiG-15bis fulfils the same role as the MiG-15, primarily serving as an air superiority fighter and bomber interceptor. Armament is substandard in comparison to other countries, relying on low velocity weapons that are highly inaccurate, and situated below the fuselage, aggravating targeting angles during dogfights. It excels in vertical combat manoeuvres, taking advantage of its high thrust-to-weight ratio. The MiG-15bis also has a limited ground attack capability.

The MiG-15bis should be played like the MiG-15, using boom-and-zoom style attacks and keeping your energy high: speed is essential in jet battles. It wouldn't be a bad idea to try head-ons if you know your cannon's ballistics well. The 37 mm and 23 mm combo really help. The plane lacks in roll rate so you will have to watch out for other jets trying to reverse you.

=== Pros and cons ===


'''Pros:'''

* Excellent climb rate and acceleration.
* Above average manoeuvrability.
* Good performance at altitude compared to most opponents.
* Powerful main armament, especially effective against bombers.
* Ability to carry massive S-21 rockets, unlike the earlier [[MiG-15]].
* Amazing turn below 800 km/h (520 mph)

'''Cons:'''

* Somewhat slow roll rate.
* Loss of manoeuvrability above Mach 0.9 due to compression.
* Cannons have very a low muzzle velocity, making aiming at fast targets very hard.
* Cannon main armament is mounted very low, and the different ballistics can make aiming even more difficult.
* Limited ammunition capacity.
* Stock guns have an important dispersion and stock belts tend to spark a lot.
* Poor forward visibility in simulator: it has a large canopy frame and the gunsight obstructs the top and bottom.

== 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></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).''

=== In-game description ===
After World War II was over, the leaders of the USSR realized that they were behind the leading states of the world in the sphere of jet aircraft construction, most notably in the full-scale production of turbojet engines. Consequently, a delegation including the designers A. I. Mikoyan and V. Y. Klimov was sent to Great Britain towards the end of 1946. Their negotiations were successful, resulting in the purchase of two of the most advanced turbojet engines at that time: the Rolls-Royce Derwent Mk.V and the Rolls-Royce Nene I/Nene II. The British consented to sell their newest strategic designs easily enough, since they believed that the Soviet industrial/technological apparatus could not handle the mass production of sophisticated assemblies. However, very soon that the Rolls-Royce engines were launched into full-scale Soviet production under the designations RD-500 and RD-45.

The emergence of the new engines led to the creation of Soviet jet fighters able to compete with the leading models of the world. In 1947, the Mikoyan Design Bureau started the development of a front line fighter with a Nene (RD-45) turbojet engine and an airtight cockpit: the I-310 ("S"). The first S-01 prototype aircraft made its first flight on December 30, 1947, and, after working on the test results, was launched into full-scale production in 1948 under the designation MiG-15. The plane's airframe was an all-metal monoplane configuration with mid-swept wings and empennage. Thus the MiG-15 became the first production swept-wing fighter.

The MiG-15 was equipped with a RD-45F single-shaft turbojet engine rated at 2,270 kg of thrust with a double-entry centrifugal compressor. The plane's armament included a 37 mm Nudelman N-37D cannon with 40 rounds and two 23 mm Nudelman-Suranov NS-23KM guns with 160 rounds in total. The cannons were mounted in the forward fuselage on a lowerable carriage. 2 x 50 or 100 kg bombs could be suspended under the wings. To increase its flight range, the aircraft could carry two external fuel tanks with a capacity ranging from 250 to 600 litres.

The MiG-15 fighter was notable for its simple and reliable structure, high flight and operating characteristics, and powerful armament. Its maximum speed, rate of climb, ceiling, and flight range were the best among Soviet fighters at the time and superior to many foreign aircraft, as well.

The first production MiG-15s with RD-45F engines began to leave the factory floor in early 1949. In 1950, more advanced MiG-15bis fighters replaced them in the factory assembly lines.

== Media ==


;Skins

* [https://live.warthunder.com/feed/camouflages/?vehicle=mig-15 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]

== See also ==


;Aircraft of comparable role, configuration and era

* [[F-86 Sabre (Family)|F-86 Family]]
* [[F9F (Family)|F9F Family]]
* [[Hunter (Family)|Hunter Family]]
* [[J29 (Family)|J29 Family]]

== External links ==


* [https://forum.warthunder.com/index.php?/topic/195781-mikoyan-gurevich-mig-15bis/ Official data sheet - more details about the performance]

{{AirManufacturer MiG}}
{{USSR jet aircraft}}

MiG-15bis

2022-06-06T08:26:45Z

U124466052: Changed how it stalls in sim battles

{{About
| about = Soviet jet fighter '''{{PAGENAME}}'''
| usage = other versions
| link = MiG-15 (Family)
}}
{{Specs-Card
|code=mig-15
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Soviet jet fighter {{Battle-rating}}. It has been in the game since the start of the Open Beta Test prior to Update 1.27.

The Mikoyan-Gurevich MiG-15bis is an upgraded variant of the [[MiG-15]] jet fighter. It utilises an improved version of the RD-45 (imported British Rolls–Royce Nene) turbojet engine, the Klimov VK-1, for increased performance. The MiG-15bis also has better ground attack capability with underwing hardpoints for bombs and rockets.

== General info ==
[[File:CockpitImage_MiG-15.jpg|thumbnail|right|The instrument panel on the MiG-15bis.]]

=== Flight performance ===
{{Specs-Avia-Flight}}


The MiG-15bis is an improved and definitive MiG-15 version, the main difference is the improved engine, the Klimov VK-1. Its level speed at sea level was increased by 26 km/h to 1,076 km/h, but it is still lower than many other jets like for example the F-86 series.
The other noticeable change is a huge improvement of thrust-to-weight ratio which increased the acceleration by ~10% and it also has a huge impact on its climb rate, it can reach up to 50 m/s at low altitude with full fuel tanks, making the MiG-15bis one of the best climbing planes compared to other planes at similar battle rating.
Like the previous version, it can not fly at max power for too long or it will start overheating. While decreasing the power to 95% or lower will cool it down for a moment, if you increase it back to 100% it will immediately start overheating again.

The manoeuvrability compared to the previous variant is basically the same, while this version is slightly worse at performing horizontal manoeuvres due to increased weight (by ~100 kg), it is now better at performing vertical loop and other similar manoeuvres because of the better engine. It struggles against other jets due to its overall poor handling characteristics (poor rudder authority at all speeds, poor roll rate at all speeds).
At high speed, it does not suffer as much from compressibility but it is still at best mediocre. The elevator and rudder controls remained the same, so the plane still locks up a lot after reaching transonic speeds. Other features stayed the same: airbrakes help with slowing the plane down when it locks up too much and flaps help significantly increase dogfighting capability at low and medium speeds.

When flying with simulator controls, it is very pleasant to fly: trimming is almost not required when the plane travels at high speed, insufficient roll rate can be improved by using the rudder, but that can also make it slow down. The plane can be stalled out even at high speed, and when above it's critical Angle of Attack it severely wing-stalls, throwing off your aim and/or your heading. Be very carefull to not pull too much from the stick as to not reach this state, remember that it is one of the best rate-fighter of it's tier, so it's best to pull a bit less to keep your speed and not wing-stall as you'll win the position withing a few turns. It's improved roll rate makes it easier to use against the planes it faces, but it's still less than it's opposition

{| class="wikitable" style="text-align:center" width="70%"
! rowspan="2" | Characteristics
! colspan="2" | Max Speed (km/h at 0 m - sea level)
! rowspan="2" | Max altitude (metres)
! colspan="2" | Turn time (seconds)
! colspan="2" | Rate of climb (metres/second)
! rowspan="2" | Take-off run (metres)
|-
! AB !! RB !! AB !! RB !! AB !! RB
|-
! Stock
| 1,062 || 1,046 || rowspan="2" | {{Specs|ceiling}} || 21.0 || 22.0 || 41.4 || 39.8 || rowspan="2" | 475
|-
! Upgraded
| 1,087 || 1,076 || 20.4 || 20.7 || 59.7 || 50.0
|-
|}

==== Details ====
{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="6" | Features
|-
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
|-
| X || ✓ || ✓ || ✓ || X || X 
|-
|}

{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="7" | Limits
|-
! rowspan="2" | Wings (km/h)
! rowspan="2" | Gear (km/h)
! colspan="3" | Flaps (km/h)
! colspan="2" | Max Static G
|-
! Combat !! Take-off !! Landing !! + !! -
|-
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || N/A || 598 || 450 || ~12 || ~7
|-
|}

{| class="wikitable" style="text-align:center"
|-
! colspan="4" | Optimal velocities (km/h)
|-
! Ailerons !! Rudder !! Elevators !! Radiator
|-
| < 600 || < 700 || < 750 || N/A
|-
|}

==== Engine performance ====
{| class="wikitable" style="text-align:center"
|-
! colspan="3" | Engine
! colspan="4" | Aircraft mass
|-
! colspan="2" | Engine name || Number
! colspan="2" | Empty mass || colspan="2" | Wing loading (full fuel)
|-
| colspan="2" | Klimov VK-1 || 1
| colspan="2" | 3,648 kg || colspan="2" | 233 kg/m2
|-
! colspan="3" | Engine characteristics
! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff Weight
|-
! Weight (each) || colspan="2" | Type
! 8m fuel || 20m fuel || 28m fuel
|-
| 892 kg || colspan="2" | Centrifugal-flow turbojet
| 3,980 kg || 4,478 kg || 4,810 kg || 5,485 kg
|-
! 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.}}
! colspan="4" | Thrust to weight ratio @ 0 m (100%)
|-
! Condition || 100% || WEP
! 8m fuel || 20m fuel || 28m fuel || MTOW
|-
| ''Stationary'' || 2,450 kgf || N/A
| 0.62 || 0.55 || 0.51 || 0.45
|-
| ''Optimal'' || 2,450 kgf (0 km/h) || N/A
| 0.62 || 0.55 || 0.51 || 0.45
|-
|}

=== Survivability and armour ===
{{Specs-Avia-Armour}}


* 10 mm steel armour plates in front of the cockpit and behind the pilot's head rest.
* 6 mm steel armour under the pilot's seat.
* 64 mm bulletproof front windshield.
* Self-sealing fuel tanks behind the pilot and under the jet engine nozzle.
* Jet engine located in the rear of the aircraft, pilot seated in front.

=== Modifications and economy ===
{{Specs-Economy}}

It is recommended to obtain the modifications in the following order: Compressor > New boosters > Offensive 37 mm > Wings repair > Engine > G-suit > New 37 mm cannons > Cover > Offensive 23 mm > New 23 mm cannons > Airframe > Fuselage repair > Suspended weapons

== Armaments ==
{{Specs-Avia-Armaments}}
=== Offensive armament ===
{{Specs-Avia-Offensive}}

{{main|N-37D (37 mm)|NR-23 (23 mm)}}

The '''''{{PAGENAME}}''''' is armed with:

* 1 x 37 mm N-37D cannon, chin-mounted (40 rpg)
* 2 x 23 mm NR-23 cannons, chin-mounted (80 rpg = 160 total)

In line with its originally designed role of bomber interception, the MiG-15bis is armed with three powerful nose-mounted autocannons. The 37 mm N-37D cannon is particularly noteworthy, as even a small number of hits are usually fatal to any aircraft unfortunate enough to be on the receiving end, with the twin 23 mm NR-23 cannons also being quite respectable in terms of lethality.

The trade-off is that these cannons do not have large ammunition reserves, especially compared to the American planes armed with heavy machine guns, and it is very easy to run out of ammunition without careful aim. In addition, the N-37D has a significantly lower muzzle velocity than the NR-23, with a more pronounced ballistic arc. This makes obtaining hits with both types of cannon at the same time quite challenging; using only the 37 mm or the 23 mm cannons at one time may be more efficient with regards to ammunition usage.

=== Suspended armament ===
{{Specs-Avia-Suspended}}

{{main|FAB-100M-43 (100 kg)|FAB-250M-46 (250 kg)|S-5K|S-5M|S-21}}

The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:

* Without load
* 2 x 100 kg FAB-100M-43 bombs (200 kg total)
* 2 x 250 kg FAB-250M-46 bombs (500 kg total)
* 16 x S-5K rockets
* 16 x S-5M rockets
* 2 x S-21 rockets

The MiG-15bis is capable of carrying up to 500 kg of bombs on underwing hardpoints. While this pales in comparison to the American or British fighter-bombers, it is enough for taking out isolated ground targets, if needed.

The S-5M HE rockets are most effective against light ground units, while the S-5K HEAT rockets are capable of penetrating the top armour of most vehicles.

The massive S-21 rocket has a considerable blast radius, and a single hit on a tank is usually fatal. The rocket may also be set with a distance fuse (up to 1,000 m), which can be very effective against large aircraft, such as bombers, or tightly bunched groups of smaller aircraft.

== Usage in battles ==

In-game, the MiG-15bis fulfils the same role as the MiG-15, primarily serving as an air superiority fighter and bomber interceptor. Armament is substandard in comparison to other countries, relying on low velocity weapons that are highly inaccurate, and situated below the fuselage, aggravating targeting angles during dogfights. It excels in vertical combat manoeuvres, taking advantage of its high thrust-to-weight ratio. The MiG-15bis also has a limited ground attack capability.

The MiG-15bis should be played like the MiG-15, using boom-and-zoom style attacks and keeping your energy high: speed is essential in jet battles. It wouldn't be a bad idea to try head-ons if you know your cannon's ballistics well. The 37 mm and 23 mm combo really help. The plane lacks in roll rate so you will have to watch out for other jets trying to reverse you.

=== Pros and cons ===


'''Pros:'''

* Excellent climb rate and acceleration.
* Above average manoeuvrability.
* Good performance at altitude compared to most opponents.
* Powerful main armament, especially effective against bombers.
* Ability to carry massive S-21 rockets, unlike the earlier [[MiG-15]].
* Amazing turn below 800 km/h (520 mph)

'''Cons:'''

* Somewhat slow roll rate.
* Loss of manoeuvrability above Mach 0.9 due to compression.
* Cannons have very a low muzzle velocity, making aiming at fast targets very hard.
* Cannon main armament is mounted very low, and the different ballistics can make aiming even more difficult.
* Limited ammunition capacity.
* Stock guns have an important dispersion and stock belts tend to spark a lot.
* Poor forward visibility in simulator: it has a large canopy frame and the gunsight obstructs the top and bottom.

== 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></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).''

=== In-game description ===
After World War II was over, the leaders of the USSR realized that they were behind the leading states of the world in the sphere of jet aircraft construction, most notably in the full-scale production of turbojet engines. Consequently, a delegation including the designers A. I. Mikoyan and V. Y. Klimov was sent to Great Britain towards the end of 1946. Their negotiations were successful, resulting in the purchase of two of the most advanced turbojet engines at that time: the Rolls-Royce Derwent Mk.V and the Rolls-Royce Nene I/Nene II. The British consented to sell their newest strategic designs easily enough, since they believed that the Soviet industrial/technological apparatus could not handle the mass production of sophisticated assemblies. However, very soon that the Rolls-Royce engines were launched into full-scale Soviet production under the designations RD-500 and RD-45.

The emergence of the new engines led to the creation of Soviet jet fighters able to compete with the leading models of the world. In 1947, the Mikoyan Design Bureau started the development of a front line fighter with a Nene (RD-45) turbojet engine and an airtight cockpit: the I-310 ("S"). The first S-01 prototype aircraft made its first flight on December 30, 1947, and, after working on the test results, was launched into full-scale production in 1948 under the designation MiG-15. The plane's airframe was an all-metal monoplane configuration with mid-swept wings and empennage. Thus the MiG-15 became the first production swept-wing fighter.

The MiG-15 was equipped with a RD-45F single-shaft turbojet engine rated at 2,270 kg of thrust with a double-entry centrifugal compressor. The plane's armament included a 37 mm Nudelman N-37D cannon with 40 rounds and two 23 mm Nudelman-Suranov NS-23KM guns with 160 rounds in total. The cannons were mounted in the forward fuselage on a lowerable carriage. 2 x 50 or 100 kg bombs could be suspended under the wings. To increase its flight range, the aircraft could carry two external fuel tanks with a capacity ranging from 250 to 600 litres.

The MiG-15 fighter was notable for its simple and reliable structure, high flight and operating characteristics, and powerful armament. Its maximum speed, rate of climb, ceiling, and flight range were the best among Soviet fighters at the time and superior to many foreign aircraft, as well.

The first production MiG-15s with RD-45F engines began to leave the factory floor in early 1949. In 1950, more advanced MiG-15bis fighters replaced them in the factory assembly lines.

== Media ==


;Skins

* [https://live.warthunder.com/feed/camouflages/?vehicle=mig-15 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]

== See also ==


;Aircraft of comparable role, configuration and era

* [[F-86 Sabre (Family)|F-86 Family]]
* [[F9F (Family)|F9F Family]]
* [[Hunter (Family)|Hunter Family]]
* [[J29 (Family)|J29 Family]]

== External links ==


* [https://forum.warthunder.com/index.php?/topic/195781-mikoyan-gurevich-mig-15bis/ Official data sheet - more details about the performance]

{{AirManufacturer MiG}}
{{USSR jet aircraft}}

MiG-15

2022-06-06T08:18:49Z

U124466052: Changed "it just slows down in a stall" to "it's quite easy to wing-stall"

{{About
| about = Russian jet fighter '''{{PAGENAME}}'''
| usage = other uses
| link = MiG-15 (Family)
}}
{{Specs-Card
|code=mig-15_ns23
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Soviet jet fighter {{Battle-rating}}. It was introduced in [[Update 1.35]]. The main differences between this aircraft and the [[MiG-15bis]] are weaker engine performance and [[NR-23 (23 mm)|NR-23 23 mm]] autocannons.

== General info ==
[[File:CockpitImage_MiG-15.jpg|thumbnail|right|The '''MiG-15''''s instrument panel.]]

=== Flight performance ===
{{Specs-Avia-Flight}}

The MiG-15, while being a successor of the MiG-9, uses swept wings which provide better performance at transonic speed. The other difference is the use of a single engine, the Klimov RD-45F. The plane is able to reach 1050 km/h at sea level and 994 km/h at 9000 m, it makes the plane's speed very comparable with other jets at a similar battle rating. The climb rate is very high: with full fuel tanks it reaches 42 m/s and the plane can climb from sea level up to 5000 m in slightly above 2 minutes. The acceleration is also great, thrust to weight ration when the plane is fully loaded is 0.44, which is significantly better compared to the F-86A, one of its main competitors, the plane also keeps its speed very well, especially at high speed.
The engine can start overheating after prolonged flying at 100% of power, but it is quite easy to cool down, although when that happens it will keep overheating after switching back to max power so when it possible it should be reduced to 95% or lower.

The MiG-15's weight is very low in comparison to other jet fighters from similar era, it is only ~4700 kg and along with quite good wings aerodynamics and wing loading it makes the plane very manoeuvrable at low and medium speeds and makes it a very dangerous foe to any other plane when it comes to dogfighting, the only thing that slightly drags this plane down is its high speed turn rate, which is very underwhelming. The MiG-15 locks up at lot after reaching subsonic speeds and its rolling performance, which is already very average at medium and low speeds, gets very bad at high speed. It is also equipped with an airbrake that can help a lot with slowing down and it situations to make the enemy plane overshoot.
Flaps while do not have very high speed limit can still make the turn fight at medium and low speed easier, as they increase turn rate by up to ~10% at a cost of increased drag.

When flying with simulator controls, it is very pleasant to fly: trimming is almost not required when the plane travels at high speed, insufficient roll rate can be improved by using the rudder, but that can also make it slow down. The plane can be stalled out even at high speed, and when above it's critical Angle of Attack it severely wing-stalls, throwing off your aim and/or your heading. Be very carefull to not pull too much from the stick as to not reach this state, remember that it is one of the best rate-fighter of it's tier, so it's best to pull a bit less to keep your speed and not wing-stall as you'll win the position withing a few turns.

{| class="wikitable" style="text-align:center" width="70%"
! rowspan="2" | Characteristics
! colspan="2" | Max Speed (km/h at 0 m - sea level)
! rowspan="2" | Max altitude (metres)
! colspan="2" | Turn time (seconds)
! colspan="2" | Rate of climb (metres/second)
! rowspan="2" | Take-off run (metres)
|-
! AB !! RB !! AB !! RB !! AB !! RB
|-
! Stock
| 1,009 || 975 || rowspan="2" | {{Specs|ceiling}} || 22.4 || 23.7 || 34.2 || 32.5 || rowspan="2" | 600
|-
! Upgraded
| 1,067 || 1,050 || 22.8 || 22.1 || 50.8 || 42.0
|-
|}

==== Details ====
{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="6" | Features
|-
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
|-
| X || ✓ || ✓ || ✓ || X || X 
|-
|}

{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="7" | Limits
|-
! rowspan="2" | Wings (km/h)
! rowspan="2" | Gear (km/h)
! colspan="3" | Flaps (km/h)
! colspan="2" | Max Static G
|-
! Combat !! Take-off !! Landing !! + !! -
|-
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || N/A || 598 || 450 || ~12 || ~5
|-
|}

{| class="wikitable" style="text-align:center"
|-
! colspan="4" | Optimal velocities (km/h)
|-
! Ailerons !! Rudder !! Elevators !! Radiator
|-
| < 600 || < 700 || < 750 || N/A
|-
|}

==== Engine performance ====
{| class="wikitable" style="text-align:center"
|-
! colspan="3" | Engine
! colspan="5" | Aircraft mass
|-
! colspan="2" | Engine name || Number
! colspan="2" | Empty mass || colspan="3" | Wing loading (full fuel)
|-
| colspan="2" | Klimov RD-45F || 1
| colspan="2" | 3,508 kg || colspan="3" | 229 kg/m2
|-
! colspan="3" | Engine characteristics
! colspan="4" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff Weight
|-
! Weight (each) || colspan="2" | Type
! 10m fuel || 20m fuel || 30m fuel || 33m fuel
|-
| 872 kg || colspan="2" | Centrifugal-flow turbojet
| 3,875 kg || 4,241 kg || 4,608 kg || 4,718 kg || 5,485 kg
|-
! 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.}}
! colspan="5" | Thrust to weight ratio @ 0 m (100%)
|-
! Condition || 100% || WEP
! 10m fuel || 20m fuel || 30m fuel || 33m fuel || MTOW
|-
| ''Stationary'' || 2,086 kgf || N/A
| 0.54 || 0.49 || 0.45 || 0.44 || 0.38
|-
| ''Optimal'' || 2,086 kgf (0 km/h) || N/A
| 0.54 || 0.49 || 0.45 || 0.44 || 0.38
|-
|}

=== Survivability and armour ===
{{Specs-Avia-Armour}}


* 64 mm Bulletproof glass in the cockpit front
* 10 mm Steel plate in front of the pilot in the nose
* 6 mm Steel plate in pilot's seat
* 10 mm Steel plate behind the pilot's head

=== Modifications and economy ===
{{Specs-Economy}}

== Armaments ==
{{Specs-Avia-Armaments}}
=== Offensive armament ===
{{Specs-Avia-Offensive}}

{{main|N-37D (37 mm)|NS-23 (23 mm)}}

The '''''{{PAGENAME}}''''' is armed with:

* 1 x 37 mm N-37D cannon, nose-mounted (40 rpg)
* 2 x 23 mm NS-23 cannons, nose-mounted (80 rpg = 160 total)

Both the N-37D and the NS-23 cannons have the muzzle velocity of 690 m/s.

=== Suspended armament ===
{{Specs-Avia-Suspended}}

{{main|FAB-100M-43 (100 kg)|FAB-250M-46 (250 kg)}}

The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:

* Without load
* 2 x 100 kg FAB-100M-43 bombs (200 kg total)
* 2 x 250 kg FAB-250M-46 bombs (500 kg total)

== Usage in battles ==

At higher ranks of the Soviet aviation line, the MiG-15 series is one of the most iconic jet fighter aircraft designs from after the Second World War. Earning its reputation on fame over the skies of Korea against its US contemporary, the [[F-86A-5|F-86 ''Sabre'']].

The MiG-15 can be researched from its predecessor, the [[MiG-9_/L|MiG-9/L]]. The MiG-15 features a powerful cannon arrangement of 2 x 23 mm and 1x 37 mm, excellent high altitude performance and is highly effective in vertical manoeuvres. Unlike the MiG-9, the MiG-15 is also the first Soviet jet aircraft to feature an air brake which is extremely useful in combat situations. The jet fighter does, however, have its downsides. The lack of an "All-flying tailplane" (such as that featured on the [[F-86F-25|Sabre]]) leads to less control over the aircraft at higher speeds approaching 1,000 km/h. While the MiG is initially faster in acceleration by comparison to the Sabre, this does mean that once both aircraft are up at higher speeds, the Sabre will hold some advantages over the MiG-15. It should be noted that if you load 8 minutes of fuel instead of the regular (for most pilots) 20, it drastically improves your performance. However, this is not recommended to be done at the beginning of the match as most matches last longer than 8 minutes, and should instead be done when you land mid-match.

The combination of 37 mm and 23 mm cannons creates aiming issues for pilots not familiar with their ballistic properties or velocity. Due to the size of these cannons, ammunition pools are restricted by comparison to other top tier jet aircraft. To help compensate the two different trajectories of the armament, it is recommended to use 'rolling' manoeuvres, as the rudder may lock in high speeds. To aim with these cannons, it is best to estimate the lead with the experience built up with planes beforehand (ie.: Yak-9T / La-9) and add extra distance over the estimated lead (about double from the estimated).

Once pilots have learned to use the MiG-15s excellent rate of climb, acceleration and high altitude capabilities to their advantage, the downsides of the aircraft are far less significant than the positives. In the right hands, the MiG-15 can be a devastating combatant, capable of dealing with any aircraft in game swiftly. Teamwork, Squads and communication will also be beneficial when flying the MiG-15 as effective coordination between multiple pilots allow you to use this aircraft to its maximum potential. After mastering the MiG-15, you can research its improved variant, the [[MiG-15bis|MiG-15Bis]]. As the MiG-15 is essentially a slightly merged MiG-15bis, it shares much of its performance issues and abilities.

=== Pros and cons ===


'''Pros:'''

* Flaps can be deployed at high speeds
* Capable and useful air brake
* High rate of climb
* Great acceleration
* Deadly armament capable of making snapshots
* Excellent energy retention
* Quite good turn rate compared to other subsonic jets

'''Cons:'''

* Abysmal roll rate
* Compression at high speeds
* Extremely challenging to use when stock
* Armament is difficult to use (low velocities, low ammo and two different trajectories)
* Guns tend to do an insufficient amount of damage quite often
* No G-suit, so maintaining control is difficult when turning at high speeds
* The plane cannot use any rockets, it is limited to bombs only
* Poor forward visibility in simulator, as a large canopy frame and the gunsight block the top and bottom

== History ==

First taking to the air in December of 1947, the Mikoyan-Gurevich MiG-15 jet fighter aircraft came as a massive shock to the west when it appeared in the skies over Korea in the early 1950s. The swept-wing fighter quickly proved itself as a capable and effective combat aircraft and forged a fearsome reputation.

The prototype I-310 was designed around the British Rolls Royce Nene engine which was purchased under license from Great Britain as the RD-45. Featuring sleek swept-back wings, tricycle undercarriage and the same armament as its predecessor, the [[MiG-9]], in the form of 2 x 23mm NS-23 cannons (Later replaced by NR-23 cannons in the [[MiG-15bis|MiG-15Bis]] model) and a single 37mm N-37D cannon all mounted centrally under the nose intake. The new aircraft was designed as an interceptor with heavy armament capable of quickly taking out bomber formations and was one of the most advanced aircraft in the world at the time.

Entering service between 1949-50, the MiG-15 made its operational combat debut in the Korean War, completely outclassing the first-generation jet fighter aircraft of the UN forces such as the [[F-80C-10|F-80]] and [[F-84B-26|F-84]]. The MiG's excellent rate of climb, high-speed performance and deadly weaponry proved superior to the early jets and was only challenged by the arrival of the [[F-86A-5|North American F-86 Sabre]]. At the time, the Sabre was the only aircraft capable of effectively combating the MiG in aerial combat and the pair became synonymous with the conflict.

From 1950, the MiG-15 was later developed into the Bis model, featuring a new engine, armament changes and minor overall improvements. However, the aircraft would ultimately lead to the development of the MiG-17. The MiG-15 was also a hugely successful export aircraft, operated by many nations such as Poland, Czechoslovakia, [[MiG-15bis_(Germany)|East Germany]], China, North Korea and Vietnam to name but a few. Licence built versions of the MiG-15 also existed such as the Chinese J-2, Czech S-102/3 and Polish Lim-1.

The MiG-15 is a true icon of aviation and will provide experienced pilots with an impressive top tier jet fighter when employed to its strengths, being more than a match to any other aircraft in the game.

=== In-game description ===
After World War II was over, the leaders of the USSR realized that they were behind the leading states of the world in the sphere of jet aircraft construction, most notably in the full-scale production of turbojet engines. Consequently, a delegation including the designers A. I. Mikoyan and V. Y. Klimov was sent to Great Britain towards the end of 1946. Their negotiations were successful, resulting in the purchase of two of the most advanced turbojet engines at that time: the Rolls-Royce Derwent Mk.V and the Rolls-Royce Nene I/Nene II. The British consented to sell their newest strategic designs easily enough, since they believed that the Soviet industrial/technological apparatus could not handle the mass production of sophisticated assemblies. However, very soon that the Rolls-Royce engines were launched into full-scale Soviet production under the designations RD-500 and RD-45.

The emergence of the new engines led to the creation of Soviet jet fighters able to compete with the leading models of the world. In 1947, the Mikoyan Design Bureau started the development of a front line fighter with a Nene (RD-45) turbojet engine and an airtight cockpit: the I-310 ("S"). The first S-01 prototype aircraft made its first flight on December 30, 1947, and, after working on the test results, was launched into full-scale production in 1948 under the designation MiG-15. The plane's airframe was an all-metal monoplane configuration with mid-swept wings and empennage. Thus the MiG-15 became the first production swept-wing fighter.

The MiG-15 was equipped with a RD-45F single-shaft turbojet engine rated at 2,270 kg of thrust with a double-entry centrifugal compressor. The plane's armament included a 37mm Nudelman N-37D cannon with 40 rounds and two 23mm Nudelman-Suranov NS-23KM guns with 160 rounds in total. The cannons were mounted in the forward fuselage on a lowerable carriage. Two 100-kg or 50-kg bombs could be suspended under the wings. To increase its flight range, the aircraft could carry two external fuel tanks with a capacity ranging from 250 to 600 liters.

The MiG-15 fighter was notable for its simple and reliable structure, high flight and operating characteristics, and powerful armament. Its maximum speed, rate of climb, ceiling, and flight range were the best among Soviet fighters at the time and superior to many foreign aircraft, as well.

The first production MiG-15s with RD-45F engines began to leave the factory floor in early 1949. In 1950, more advanced MiG-15bis fighters replaced them in the factory assembly lines.

== Media ==
''Excellent additions to the article would be video guides, screenshots from the game, and photos.''

== See also ==


;[[MiG-15 (Family)|Related development]]

* [[MiG-15bis]]

;Aircraft of comparable role, configuration and era

* [[F-86 Sabre (Family)|F-86 Family]]
* [[F9F (Family)|F9F Family]]
* [[F-80C-10|F-80C]]
* [[J29 (Family)|J29 Family]]
* [[Hunter (Family)|Hunter Family]]

== External links ==


* [[wt:en/news/3054/current/|[Vehicle Profile] MiG-15]]
* [https://forum.warthunder.com/index.php?/topic/285037-mikoyan-gurevich-mig-15/ Official data sheet - more details about the performance]

{{AirManufacturer MiG}}
{{USSR jet aircraft}}

G.91 YS

2022-06-06T08:08:59Z

U124466052: Added a space that was missing

{{About
| about = Italian jet fighter '''{{PAGENAME}}'''
| usage = other versions
| link = G.91 (Family)
}}
{{Specs-Card
|code=fiat_g91_ys
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Italian jet fighter {{Battle-rating}}. It was introduced in [[Update 1.87 "Locked On"]].

The {{PAGENAME}} is a multi-role fighter which first debuted in 1966. Based largely on earlier Fiat G.91 fighters, the G.91 YS was a complete redesign but kept the basic shape of the G.91 series. The biggest difference between the two types was the conversion from a single-engine to two General Electric J85 turbojets outfitted with afterburners. This conversion alone resulted in a 60% increase in the aircraft's thrust, however, it was not enough for this jet to become supersonic even when in a dive.

In similar fashion to the earlier French fighter, the [[Super Mystere B2]], the {{PAGENAME}} was outfitted with dual 30 mm DEFA autocannons in the cheeks of the forward fuselage. Also in the same vein, the {{PAGENAME}} was built to be a multi-role fighter as a fighter-interceptor or a fighter-bomber. Due to the increased power of the dual engines, this fighter when acting in a bomber role has the ability to carry up to 4,000 lbs of bombs, though configurations as low as 1,000 lbs is available. FFAR Mighty Mouse unguided rockets are another good option for taking out softer ground targets in which the larger 500 – 1,000 lb bombs would otherwise be overkill.

The {{PAGENAME}} while lacking in the supersonic flight department is a feisty little fellow which can still hold its own in an air-to-air combat role. The dual autocannons can make quick work of any head-on attacks provided the pilot gets out of the way of incoming bullets in return. AIM-9B Sidewinder missiles prove themselves very effective especially against slower targets such as bombers and helicopters but are a bit more difficult to achieve success against other fighters due to their ability to pull high-G manoeuvres and break the missile lock and avoid them.

The pilot has the option to change up the load-out of the aircraft due to the map he finds himself on and what they are comfortable with. Air-to-air and ground-attack options are both viable and can help change the tide of the battle by loading up on what the team needs more.

== General info ==
=== Flight performance ===
{{Specs-Avia-Flight}}

[[File:G91YS Jermster 91 001.jpg|300px|thumb|right|A bird's eye view of a {{PAGENAME}} fighter.]]
The {{PAGENAME}} is a very good Boom & Zoom fighter, the only issue is confronting other jets with afterburner capabilities which make your Boom & Zoom attempt more difficult. The YS has a lower turn speed than the other G.91s (swapped for acceleration and a little bit more speed) it is also two high power engines, making it possible to return to base on one engine or even fight like that if you want. Sadly the G.91 isn't supersonic but it can get close in a steep dive, making it one of the best trans-sonic jets!

{| class="wikitable" style="text-align:center" width="70%"
! rowspan="2" | Characteristics
! colspan="2" | Max Speed (km/h at 0 m - sea level)
! rowspan="2" | Max altitude (metres)
! colspan="2" | Turn time (seconds)
! colspan="2" | Rate of climb (metres/second)
! rowspan="2" | Take-off run (metres)
|-
! AB !! RB !! AB !! RB !! AB !! RB
|-
! Stock
| 1,114 || 1,109 || rowspan="2" | {{Specs|ceiling}} || 29.5 || 30.7 || 60.4 || 54.6 || rowspan="2" | 750
|-
! Upgraded
| 1,131 || 1,123 || 28.6 || 29.0 || 91.8 || 75.0
|-
|}

==== Details ====
{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="6" | Features
|-
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
|-
| ✓ || ✓ || ✓ || ✓ || ✓ || ✓ 
|-
|}

{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="7" | Limits
|-
! rowspan="2" | Wings (km/h)
! rowspan="2" | Gear (km/h)
! colspan="3" | Flaps (km/h)
! colspan="2" | Max Static G
|-
! Combat !! Take-off !! Landing !! + !! -
|-
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 592 || 556 || 371 || ~11 || ~4
|-
|}

{| class="wikitable" style="text-align:center"
|-
! colspan="4" | Optimal velocities (km/h)
|-
! Ailerons !! Rudder !! Elevators !! Radiator
|-
| < 800 || < 650 || < 660 || N/A
|-
|}

==== Engine performance ====
{| class="wikitable" style="text-align:center"
|-
! colspan="3" | Engine
! colspan="6" | Aircraft mass
|-
! colspan="2" | Engine name || Number
! colspan="3" | Empty mass || colspan="3" | Wing loading (full fuel)
|-
| colspan="2" | General Electric J85-GE-13A || 2
| colspan="3" | 4,350 kg || colspan="3" | 380 kg/m2
|-
! colspan="3" | Engine characteristics
! colspan="5" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff Weight
|-
! Weight (each) || colspan="2" | Type
! 17m fuel || 20m fuel || 30m fuel || 45m fuel || 57m fuel
|-
| 271 kg || colspan="2" | Afterburning axial-flow turbojet
| 5,114 kg || 5,246 kg || 5,688 kg || 6,351 kg || 6,882 kg || 8,500 kg
|-
! 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.}}
! colspan="6" | Thrust to weight ratio @ 0 m (WEP)
|-
! Condition || 100% || WEP
! 17m fuel || 20m fuel || 30m fuel || 45m fuel || 57m fuel || MTOW
|-
| ''Stationary'' || 1,230 kgf || 1,894 kgf
| 0.74 || 0.72 || 0.67 || 0.60 || 0.55 || 0.45
|-
| ''Optimal'' || 1,242 kgf (1,000 km/h) || 1,913 kgf (1,000 km/h)
| 0.75 || 0.73 || 0.67 || 0.60 || 0.56 || 0.45
|-
|}

=== Survivability and armour ===
{{Specs-Avia-Armour}}


* 40 mm bulletproof glass in the canopy windshield (angled to provide about 94 mm of protection)
* 6.5 mm steel behind pilot's seat

Like many later generation jet fighters (those built in the 1960s-70s) the {{PAGENAME}} traded armour for greater ordnance carrying capacity. Though not without all armour, the canopy windshield has an effective thickness of 94 mm to protect the pilot in the event of a head-on attack. Though the 6.5 mm of steel behind the pilot's seat seem to be on the thin side, bullets coming in from that direction will need to pass through the engine first. If the pilot is going to be hit by bullets it will most likely be through side angle shots or from above.
[[File:G91YS AgressiveRecon 001.jpg|700px|thumb|center|Aerial shot of a {{PAGENAME}} at altitude.]]

=== Modifications and economy ===
{{Specs-Economy}}

== Armaments ==
{{Specs-Avia-Armaments}}
{| class="wikitable" style="text-align:center"
|-
! colspan="4" | [[Ballistic Computer]]
|-
! CCIP (Guns) !! CCIP (Rockets) !! CCIP (Bombs) !! CCRP (Bombs)
|-
| {{Tick}} || {{Tick}} || {{Tick}} || {{Cross}}
|-
|}
=== Offensive armament ===
[[File:G91YS CrazyJow 001.jpg|400px|thumb|right|'''{{PAGENAME}}''' fighter with the sun setting behind it.]]
{{Specs-Avia-Offensive}}

{{main|DEFA 552 (30 mm)}}

The '''''{{PAGENAME}}''''' is armed with:

* 2 x 30 mm DEFA 552 cannons, nose-mounted (125 rpg = 250 total)

=== Suspended armament ===
{{Specs-Avia-Suspended}}

{{main|LDGP Mk 82 (500 lb)|LDGP Mk 83 (1,000 lb)|AIM-9B Sidewinder|FFAR Mighty Mouse}}

The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:

* Without load
* 2 x 500 lb LDGP Mk 82 bombs (1,000 lb total)
* 4 x 500 lb LDGP Mk 82 bombs (2,000 lb total)
* 2 x 1,000 lb LDGP Mk 83 bombs (2,000 lb total)
* 4 x 1,000 lb LDGP Mk 83 bombs (4,000 lb total)
* 76 x FFAR Mighty Mouse rockets
* 2 x AIM-9B Sidewinder missiles
* 2 x AIM-9B Sidewinder missiles + 2 x 500 lb LDGP Mk 82 bombs (1,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 4 x 500 lb LDGP Mk 82 bombs (2,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 2 x 1,000 lb LDGP Mk 83 bombs (2,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 4 x 1,000 lb LDGP Mk 83 bombs (4,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 76 x FFAR Mighty Mouse rockets

== Usage in battles ==

The G.91 YS has a lot of power and energy potential, keep that in mind before going into battle. To add to this fighters punch, it also utilises AIM 9B missiles and in capable hands, this fighter can be a monster on the battlefield. The YS also has the capability of mounting 76 x FFAR Mighty Mouse rockets which provide the potential of low-altitude Boom & Zooming on trucks, anti-aircraft artillery, light tanks and even enemy fighters attempting an airfield capture, though this does not come without a cost. When dropping in low on ground targets, the fighter sacrifices its speed and manoeuvrability for that ordnance. The YS also can outfit a few bombs so the YS can then be used as a base bomber following up by attacking enemy fighters, but even still it isn't always reliable and can be easily intercepted from any other supersonic fighter jets patrolling the area.

Your biggest threats will be F-4Cs, MiG-19S/PT, F-100D, Mitsubishi T2, J-6A, J-7II, Hunter F.6, mainly because they have superior speed and ordnance. The Hunter is probably the best-matched jet to the {{PAGENAME}}. The only top tier jet which should not be too much of a pain is the Super Mystere B2, and F-86K because they have limited speed and slow acceleration compared and will never win in a vertical climb against the {{PAGENAME}}.

=== Pros and cons ===

[[File:G91YS easterly0815 001.png |400px|thumb|right|{{PAGENAME}} popping its braking parachute upon landing.]]
'''Pros:'''

* Excellent acceleration and roll speed
* Able to carry air-to-air missiles
* Wide variety of payload options
* High rate of climb
* Deadly main armament
* Drag chute helps slow you down very quickly during landings

'''Cons:'''

* Slower than most planes it will face
* Limited ammo
* Slower turn rate compared to earlier G.91s
* Flaps and landing gear are prone to ripping off
* New booster module is a must to research in order to avoid crashing during a very fast and low-level dive
* AIM-9Bs have a poorer performance other air-to-air missiles at this BR

== History ==

[[File:G91YS Jermster 91 002.jpg|400px|thumb|right|A {{PAGENAME}} heading into an active battle zone.]]
During the 1960s, Fiat began developing a successor to their previous G.91 fighter, which had thus far managed to obtain a favourable reputation with its operators. Fiat based their new aircraft heavily on the two-seat trainer version of the G.91 and decided outfit the aircraft with two General Electric J85 afterburning engines contrary to the preceding single-engine G.91.

Additionally, the aircraft's fuselage and wings were enlarged to accommodate 3 more fuel tanks (for a total capacity of 3200 liters), bigger powerplant and improve handling characteristics, while a slew of other tweaks and upgrades further enhanced the aircraft's overall design, including an automatic slat on the wing's leading edge. The new G.91Y performed its maiden flight in December 1966. Testing revealed minor aerodynamic issues which would be resolved on subsequent production aircraft with only minor redesigns. At high altitude extreme manoeuvres at high angles of attack could lead to engines flame-out.

Production of the G.91Y began with an initial order for 20 pre-production machines, following the manufacturing of two prototypes. This order would eventually go up to 75 aircraft, although only 67 including the initial prototypes were delivered in the end. By the mid 1970s, all outstanding orders for the G.91Y were fulfilled and production had ceased for this variant.

The G.91Y served exclusively with Italian squadrons up until the early 1990s, before being replaced by a more modern counterpart.

The G.91YS was a single prototype conversion of the G.91Y, which followed a requirement issued by the Swiss Air Force. The aircraft allowed installation of American Sidewinder air-to-air missiles (adding 2 more sub-wing pylons) and a Swedish weapons control system. This special prototype first flew in October 1970, but was eventually not accepted into service by the Swiss. The prototype was converted back into service as a regular G.91Y.

''- From [[wt:en/news/6078-development-g-91ys-turning-and-burning-en|Devblog]]''

== Media ==


;Skins

* [https://live.warthunder.com/feed/camouflages/?vehicle=fiat_g91_ys Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]

;Images
<gallery mode="packed" heights="200">
File:G91YS_WTWallpaper_001.jpg
File:G91YS_WTWallpaper_002.jpg
File:G91YS_WTWallpaper_003.jpg
File:G91YS_WTWallpaper_004.jpg
File:G91YS_WTWallpaper_005.jpg
File:G91YS_WTWallpaper_006.jpg
File:G91YS_WTWallpaper_007.jpg
</gallery>

== 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 ==


* [[wt:en/news/6078-development-g-91ys-turning-and-burning-en|[Devblog] G.91YS: Turning and Burning]]
* [https://forum.warthunder.com/index.php?/topic/445808-fiat-g91ys/ Official data sheet - more details about the performance]

{{AirManufacturer Fiat}}
{{Italy jet aircraft}}

G.91 YS

2022-06-06T08:08:28Z

U124466052: Fixed {PAGENAME}} into the proper PAGENAME template

{{About
| about = Italian jet fighter '''{{PAGENAME}}'''
| usage = other versions
| link = G.91 (Family)
}}
{{Specs-Card
|code=fiat_g91_ys
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Italian jet fighter {{Battle-rating}}. It was introduced in [[Update 1.87 "Locked On"]].

The {{PAGENAME}} is a multi-role fighter which first debuted in 1966. Based largely on earlier Fiat G.91 fighters, the G.91 YS was a complete redesign but kept the basic shape of the G.91 series. The biggest difference between the two types was the conversion from a single-engine to two General Electric J85 turbojets outfitted with afterburners. This conversion alone resulted in a 60% increase in the aircraft's thrust, however, it was not enough for this jet to become supersonic even when in a dive.

In similar fashion to the earlier French fighter, the [[Super Mystere B2]], the {{PAGENAME}} was outfitted with dual 30 mm DEFA autocannons in the cheeks of the forward fuselage. Also in the same vein, the {{PAGENAME}} was built to be a multi-role fighter as a fighter-interceptor or a fighter-bomber. Due to the increased power of the dual engines, this fighter when acting in a bomber role has the ability to carry up to 4,000 lbs of bombs, though configurations as low as 1,000 lbs is available. FFAR Mighty Mouse unguided rockets are another good option for taking out softer ground targets in which the larger 500 – 1,000 lb bombs would otherwise be overkill.

The {{PAGENAME}} while lacking in the supersonic flight department is a feisty little fellow which can still hold its own in an air-to-air combat role. The dual autocannons can make quick work of any head-on attacks provided the pilot gets out of the way of incoming bullets in return. AIM-9B Sidewinder missiles prove themselves very effective especially against slower targets such as bombers and helicopters but are a bit more difficult to achieve success against other fighters due to their ability to pull high-G manoeuvres and break the missile lock and avoid them.

The pilot has the option to change up the load-out of the aircraft due to the map he finds himself on and what they are comfortable with. Air-to-air and ground-attack options are both viable and can help change the tide of the battle by loading up on what the team needs more.

== General info ==
=== Flight performance ===
{{Specs-Avia-Flight}}

[[File:G91YS Jermster 91 001.jpg|300px|thumb|right|A bird's eye view of a {{PAGENAME}} fighter.]]
The {{PAGENAME}} is a very good Boom & Zoom fighter, the only issue is confronting other jets with afterburner capabilities which make your Boom & Zoom attempt more difficult. The YS has a lower turn speed than the other G.91s (swapped for acceleration and a little bit more speed) it is also two high power engines, making it possible to return to base on one engine or even fight like that if you want. Sadly the G.91 isn't supersonic but it can get close in a steep dive, making it one of the best trans-sonic jets!

{| class="wikitable" style="text-align:center" width="70%"
! rowspan="2" | Characteristics
! colspan="2" | Max Speed (km/h at 0 m - sea level)
! rowspan="2" | Max altitude (metres)
! colspan="2" | Turn time (seconds)
! colspan="2" | Rate of climb (metres/second)
! rowspan="2" | Take-off run (metres)
|-
! AB !! RB !! AB !! RB !! AB !! RB
|-
! Stock
| 1,114 || 1,109 || rowspan="2" | {{Specs|ceiling}} || 29.5 || 30.7 || 60.4 || 54.6 || rowspan="2" | 750
|-
! Upgraded
| 1,131 || 1,123 || 28.6 || 29.0 || 91.8 || 75.0
|-
|}

==== Details ====
{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="6" | Features
|-
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
|-
| ✓ || ✓ || ✓ || ✓ || ✓ || ✓ 
|-
|}

{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="7" | Limits
|-
! rowspan="2" | Wings (km/h)
! rowspan="2" | Gear (km/h)
! colspan="3" | Flaps (km/h)
! colspan="2" | Max Static G
|-
! Combat !! Take-off !! Landing !! + !! -
|-
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 592 || 556 || 371 || ~11 || ~4
|-
|}

{| class="wikitable" style="text-align:center"
|-
! colspan="4" | Optimal velocities (km/h)
|-
! Ailerons !! Rudder !! Elevators !! Radiator
|-
| < 800 || < 650 || < 660 || N/A
|-
|}

==== Engine performance ====
{| class="wikitable" style="text-align:center"
|-
! colspan="3" | Engine
! colspan="6" | Aircraft mass
|-
! colspan="2" | Engine name || Number
! colspan="3" | Empty mass || colspan="3" | Wing loading (full fuel)
|-
| colspan="2" | General Electric J85-GE-13A || 2
| colspan="3" | 4,350 kg || colspan="3" | 380 kg/m2
|-
! colspan="3" | Engine characteristics
! colspan="5" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff Weight
|-
! Weight (each) || colspan="2" | Type
! 17m fuel || 20m fuel || 30m fuel || 45m fuel || 57m fuel
|-
| 271 kg || colspan="2" | Afterburning axial-flow turbojet
| 5,114 kg || 5,246 kg || 5,688 kg || 6,351 kg || 6,882 kg || 8,500 kg
|-
! 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.}}
! colspan="6" | Thrust to weight ratio @ 0 m (WEP)
|-
! Condition || 100% || WEP
! 17m fuel || 20m fuel || 30m fuel || 45m fuel || 57m fuel || MTOW
|-
| ''Stationary'' || 1,230 kgf || 1,894 kgf
| 0.74 || 0.72 || 0.67 || 0.60 || 0.55 || 0.45
|-
| ''Optimal'' || 1,242 kgf (1,000 km/h) || 1,913 kgf (1,000 km/h)
| 0.75 || 0.73 || 0.67 || 0.60 || 0.56 || 0.45
|-
|}

=== Survivability and armour ===
{{Specs-Avia-Armour}}


* 40 mm bulletproof glass in the canopy windshield (angled to provide about 94 mm of protection)
* 6.5 mm steel behind pilot's seat

Like many later generation jet fighters (those built in the 1960s-70s) the {{PAGENAME}} traded armour for greater ordnance carrying capacity. Though not without all armour, the canopy windshield has an effective thickness of 94 mm to protect the pilot in the event of a head-on attack. Though the 6.5 mm of steel behind the pilot's seat seem to be on the thin side, bullets coming in from that direction will need to pass through the engine first. If the pilot is going to be hit by bullets it will most likely be through side angle shots or from above.
[[File:G91YS AgressiveRecon 001.jpg|700px|thumb|center|Aerial shot of a {{PAGENAME}} at altitude.]]

=== Modifications and economy ===
{{Specs-Economy}}

== Armaments ==
{{Specs-Avia-Armaments}}
{| class="wikitable" style="text-align:center"
|-
! colspan="4" | [[Ballistic Computer]]
|-
! CCIP (Guns) !! CCIP (Rockets) !! CCIP (Bombs) !! CCRP (Bombs)
|-
| {{Tick}} || {{Tick}} || {{Tick}} || {{Cross}}
|-
|}
=== Offensive armament ===
[[File:G91YS CrazyJow 001.jpg|400px|thumb|right|'''{{PAGENAME}}''' fighter with the sun setting behind it.]]
{{Specs-Avia-Offensive}}

{{main|DEFA 552 (30 mm)}}

The '''''{{PAGENAME}}''''' is armed with:

* 2 x 30 mm DEFA 552 cannons, nose-mounted (125 rpg = 250 total)

=== Suspended armament ===
{{Specs-Avia-Suspended}}

{{main|LDGP Mk 82 (500 lb)|LDGP Mk 83 (1,000 lb)|AIM-9B Sidewinder|FFAR Mighty Mouse}}

The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:

* Without load
* 2 x 500 lb LDGP Mk 82 bombs (1,000 lb total)
* 4 x 500 lb LDGP Mk 82 bombs (2,000 lb total)
* 2 x 1,000 lb LDGP Mk 83 bombs (2,000 lb total)
* 4 x 1,000 lb LDGP Mk 83 bombs (4,000 lb total)
* 76 x FFAR Mighty Mouse rockets
* 2 x AIM-9B Sidewinder missiles
* 2 x AIM-9B Sidewinder missiles + 2 x 500 lb LDGP Mk 82 bombs (1,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 4 x 500 lb LDGP Mk 82 bombs (2,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 2 x 1,000 lb LDGP Mk 83 bombs (2,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 4 x 1,000 lb LDGP Mk 83 bombs (4,000 lb total)
* 2 x AIM-9B Sidewinder missiles + 76 x FFAR Mighty Mouse rockets

== Usage in battles ==

The G.91 YS has a lot of power and energy potential, keep that in mind before going into battle. To add to this fighters punch, it also utilises AIM 9B missiles and in capable hands, this fighter can be a monster on the battlefield. The YS also has the capability of mounting 76 x FFAR Mighty Mouse rockets which provide the potential of low-altitude Boom & Zooming on trucks, anti-aircraft artillery, light tanks and even enemy fighters attempting an airfield capture, though this does not come without a cost. When dropping in low on ground targets, the fighter sacrifices its speed and manoeuvrability for that ordnance. The YS also can outfit a few bombs so the YS can then be used as a base bomber following up by attacking enemy fighters, but even still it isn't always reliable and can be easily intercepted from any other supersonic fighter jets patrolling the area.

Your biggest threats will be F-4Cs, MiG-19S/PT, F-100D, Mitsubishi T2, J-6A, J-7II, Hunter F.6, mainly because they have superior speed and ordnance. The Hunter is probably the best-matched jet to the {{PAGENAME}}. The only top tier jet which should not be too much of a pain is the Super Mystere B2, and F-86K because they have limited speed and slow acceleration compared and will never win in a vertical climb against the {{PAGENAME}}.

=== Pros and cons ===

[[File:G91YS easterly0815 001.png |400px|thumb|right|{{PAGENAME}} popping its braking parachute upon landing.]]
'''Pros:'''

* Excellent acceleration and roll speed
* Able to carry air-to-air missiles
* Wide variety of payload options
* High rate of climb
* Deadly main armament
* Drag chute helps slow you down very quickly during landings

'''Cons:'''

* Slower than most planes it will face
* Limited ammo
* Slower turn rate compared to earlier G.91s
* Flaps and landing gear are prone to ripping off
* New booster module is a must to research in order to avoid crashing during a very fast and low-level dive
* AIM-9Bs have a poorer performance other air-to-air missiles at this BR

== History ==

[[File:G91YS Jermster 91 002.jpg|400px|thumb|right|A{{PAGENAME}} heading into an active battle zone.]]
During the 1960s, Fiat began developing a successor to their previous G.91 fighter, which had thus far managed to obtain a favourable reputation with its operators. Fiat based their new aircraft heavily on the two-seat trainer version of the G.91 and decided outfit the aircraft with two General Electric J85 afterburning engines contrary to the preceding single-engine G.91.

Additionally, the aircraft's fuselage and wings were enlarged to accommodate 3 more fuel tanks (for a total capacity of 3200 liters), bigger powerplant and improve handling characteristics, while a slew of other tweaks and upgrades further enhanced the aircraft's overall design, including an automatic slat on the wing's leading edge. The new G.91Y performed its maiden flight in December 1966. Testing revealed minor aerodynamic issues which would be resolved on subsequent production aircraft with only minor redesigns. At high altitude extreme manoeuvres at high angles of attack could lead to engines flame-out.

Production of the G.91Y began with an initial order for 20 pre-production machines, following the manufacturing of two prototypes. This order would eventually go up to 75 aircraft, although only 67 including the initial prototypes were delivered in the end. By the mid 1970s, all outstanding orders for the G.91Y were fulfilled and production had ceased for this variant.

The G.91Y served exclusively with Italian squadrons up until the early 1990s, before being replaced by a more modern counterpart.

The G.91YS was a single prototype conversion of the G.91Y, which followed a requirement issued by the Swiss Air Force. The aircraft allowed installation of American Sidewinder air-to-air missiles (adding 2 more sub-wing pylons) and a Swedish weapons control system. This special prototype first flew in October 1970, but was eventually not accepted into service by the Swiss. The prototype was converted back into service as a regular G.91Y.

''- From [[wt:en/news/6078-development-g-91ys-turning-and-burning-en|Devblog]]''

== Media ==


;Skins

* [https://live.warthunder.com/feed/camouflages/?vehicle=fiat_g91_ys Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]

;Images
<gallery mode="packed" heights="200">
File:G91YS_WTWallpaper_001.jpg
File:G91YS_WTWallpaper_002.jpg
File:G91YS_WTWallpaper_003.jpg
File:G91YS_WTWallpaper_004.jpg
File:G91YS_WTWallpaper_005.jpg
File:G91YS_WTWallpaper_006.jpg
File:G91YS_WTWallpaper_007.jpg
</gallery>

== 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 ==


* [[wt:en/news/6078-development-g-91ys-turning-and-burning-en|[Devblog] G.91YS: Turning and Burning]]
* [https://forum.warthunder.com/index.php?/topic/445808-fiat-g91ys/ Official data sheet - more details about the performance]

{{AirManufacturer Fiat}}
{{Italy jet aircraft}}