Difference between revisions of "SM.91"

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{{Specs-Card
+
{{Specs-Card|code=sm_91}}
−
|code=sm_91
 
−
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
 
−
}}
 
  
 
== Description ==
 
== Description ==
−
<!-- ''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
+
<!--''In the description, the first part needs to be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle. If the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle it is talking about.''-->
−
During 1942, the Regia Aeronautica required a defence fighter to provide a defence against bombers accelerating the advance of Allied troops into Italy. The SM.91 was created, a twin-engine fighter with DB 601 engines, armed with six 20 mm MG 151s up front and a turret equipped with a 20 mm MG 151 controlled by the gunner. 2 were created, taking flight for the first time on 11 May 1943, and achieved 27 hours of flight time but never entered official evaluations. One was captured by the Germans, while the other was destroyed by Allied bombing raids.
 
−
 
 
−
Introduced in [[Update 1.85 "Supersonic"]], the SM.91 looks like a normal heavy fighter with a very good frontal armament capable of destroying an enemy aircraft or a light or medium tank very easily with a single burst, however the performance of the aircraft allows it to recover quickly enough when it loses a lot of speed, unlike other heavy fighters. In addition to this, it equips a small rear turret with a 20 mm cannon with which you can easily defend yourself from enemy fighters.
 
  
 +
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left|The '''{{PAGENAME}}''' in the garage]]
 +
{{break}}
 +
The '''{{Specs|name}}''' is a Rank {{Specs|rank}} Italian attacker {{Battle-rating|1}}. This aircraft was introduced in [[Update 1.85 "Supersonic"]].
 
== General info ==
 
== General info ==
−
=== Flight performance ===
+
=== Flight Performance ===
−
{{Specs-Avia-Flight}}
+
<!--''Describe how the aircraft behaves in the air. Maximum speed, manoeuverability, speed and allowable loads - these are the most important characteristics of the vehicle.''-->
−
<!-- ''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.'' -->
+
The SM.91 fulfils a similar role to the P-38 when flown as an interceptor; a twin-engined fighter that is surprisingly capable as a dogfighter due to its good turn rate, especially when spaded. The twin Piaggio P.XI RC.40 12 cylinder inlines, which happen to be a pair of the powerful DB 605 Inverted V12 engines, are placed away from the cockpit, meaning its hard to take them out in a head-on. However, the heavy nature of the plane means that its acceleration is quite sluggish at low altitudes. The aircraft also sports leading edge wing slats that shorten the turning circle and has airbrakes that can help it slow down in a dive and help when landing on an airfield, which is already fairly easy due to its tri landing gear.
−
The SM.91 fulfils a similar role to the P-38 when flown as an interceptor: a twin-engined fighter that is surprisingly capable as a dogfighter due to its good turn rate, especially when spaded. The twin Piaggio P.XI RC.40 12 cylinder inline engines, which happen to be a pair of the powerful DB 605 Inverted V12 engines, are placed away from the cockpit, meaning its hard to take them out in a head-on. However, the heavy nature of the plane means that its acceleration is quite sluggish at low altitudes. The aircraft also sports leading edge wing slats that shorten the turning circle and has airbrakes that can help it slow down in a dive and help when landing on an airfield, which is already fairly easy due to its tri landing gear.
+
{| class="wikitable" style="text-align:center"
−
 
+
|-
−
{| class="wikitable" style="text-align:center" width="70%"
+
! colspan="8" | Characteristics
−
! rowspan="2" | Characteristics
+
|-
 +
! colspan="8" | ''Stock''
 +
|-
 
! colspan="2" | Max Speed<br>(km/h at 7,010 m)
 
! colspan="2" | Max Speed<br>(km/h at 7,010 m)
−
! rowspan="2" | Max altitude<br>(metres)
+
! rowspan="2" | Max altitude<br>(meters)
 
! colspan="2" | Turn time<br>(seconds)
 
! colspan="2" | Turn time<br>(seconds)
−
! colspan="2" | Rate of climb<br>(metres/second)
+
! colspan="2" | Rate of climb<br>(meters/second)
−
! rowspan="2" | Take-off run<br>(metres)
+
! rowspan="2" |Take-off run<br>(meters)
 +
|-
 +
!AB
 +
! RB
 +
! AB
 +
! RB
 +
! AB
 +
! RB
 +
|-
 +
|553||545||9,500||21.4||21.9||9.3||9.3||400
 +
|-
 +
! colspan="8" | ''Upgraded''
 
|-
 
|-
−
! AB !! RB !! AB !! RB !! AB !! RB
+
! colspan="2" | Max Speed<br>(km/h at 7,010 m)
 +
! rowspan="2" |Max altitude (meters)
 +
! colspan="2" | Turn time (seconds)
 +
! colspan="2" | Rate of climb<br>(meters/second)
 +
! rowspan="2" |Take-off run (meters)
 
|-
 
|-
−
! Stock
+
! AB
−
| 561 || 546 || rowspan="2" | {{Specs|ceiling}} || 21.1 || 21.9 || 9.3 || 9.3 || rowspan="2" | 300
+
! RB
 +
! AB
 +
! RB
 +
! AB
 +
! RB
 
|-
 
|-
−
! Upgraded
+
| 611 || 585 || 9,500 || 19.0 || 20.0 || 15.3 || 12.0 ||400
−
| 610 || 585 || 19.0 || 20.0 || 15.3 || 12.0
 
 
|-
 
|-
 
|}
 
|}
  
−
==== Details ====
+
====Details====
−
{| class="wikitable" style="text-align:center" width="50%"
+
{| class="wikitable" style="text-align:center"
 
|-
 
|-
 
! colspan="5" | Features
 
! colspan="5" | Features
 
|-
 
|-
−
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear
+
! Combat flap
 +
! Take-off flap
 +
! Landing flap
 +
! Air brakes
 +
! Arrestor gear
 
|-
 
|-
−
| ✓ || ✓ || ✓ || ✓ || X    <!-- ✓ -->
+
| ✓ || ✓ || ✓ || ✓ || X     
 
|-
 
|-
 
|}
 
|}
  
−
{| class="wikitable" style="text-align:center" width="50%"
+
{| class="wikitable" style="text-align:center"
 
|-
 
|-
−
! colspan="7" | Limits
+
! colspan="5" | Limits
 
|-
 
|-
−
! rowspan="2" | Wings (km/h)
+
! rowspan="2" | Wing-break speed<br>(km/h)
−
! rowspan="2" | Gear (km/h)
+
! rowspan="2" | Gear limit<br>(km/h)
−
! colspan="3" | Flaps (km/h)
+
! rowspan="2" | Combat flap<br> (km/h)
 
! colspan="2" | Max Static G
 
! colspan="2" | Max Static G
 
|-
 
|-
−
! Combat !! Take-off !! Landing !! + !! -
+
! +
 +
! -
 
|-
 
|-
−
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 535 || 450 || 260 || ~10 || ~5
+
| {{Specs|разрушение|конструкции}} || {{Specs|разрушение|шасси}} || ??? || ~?? || ~?
 
|-
 
|-
 
|}
 
|}
Line 62: Line 84:
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
−
! colspan="4" | Optimal velocities (km/h)
+
! colspan="4" | Optimal velocities
 
|-
 
|-
−
! Ailerons !! Rudder !! Elevators !! Radiator
+
! Ailerons<br>(km/h)
 +
! Rudder<br>(km/h)
 +
! Elevators<br>(km/h)
 +
! Radiator<br>(km/h)
 
|-
 
|-
−
| < 280 || < 200 || < 450 || > 380
+
| < ??? || < ??? || < ??? || > ???
 
|-
 
|-
 
|}
 
|}
Line 80: Line 105:
 
! WEP Engine power
 
! WEP Engine power
 
|-
 
|-
−
| 5,800 m || 1,232 hp || 1,387 hp
+
| ?,??? m || ??? hp || ?,??? hp  
 +
|-
 +
<!--! colspan="3" | Setting 2
 +
|-
 +
! Optimal altitude
 +
! 100% Engine power
 +
! WEP Engine power
 +
|-
 +
| ?,??? m || ?,??? hp || ?,??? hp  
 +
|-
 +
! colspan="3" | Setting 3
 +
|-
 +
! Optimal altitude
 +
! 100% Engine power
 +
! WEP Engine power
 
|-
 
|-
 +
| ?,??? m || ?,??? hp || ?,??? hp
 +
|- -->
 
|}
 
|}
  
 
=== Survivability and armour ===
 
=== Survivability and armour ===
−
{{Specs-Avia-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.''-->
−
<!-- ''Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.'' -->
 
−
 
 
−
* No armour
 
−
* Self-sealing fuel tanks (1 in each centre wing, 1 in each frontal section of tail, 3 in each wing)
 
−
 
 
−
The SM.91 has a good survivability, being able to take multiple 12.7 mm hits before going down; however, be careful when the enemy has 20 mm cannons or higher since they will cause serious damage to your aircraft fuselage and engines.
 
  
−
One DB 605 Inverted V12 engine is powerful enough to keep the aircraft flying in case of losing the other one, however; use of Manual Engine Controls is vital in this situation. Detailed explanation below.
+
* No armour plating
−
 
+
* Critical components located at the front of aircraft (fuel, pilot, engine, controls)
−
=== Modifications and economy ===
+
* More fuel tanks located in wings near the fuselage
−
{{Specs-Economy}}
 
  
 
== Armaments ==
 
== Armaments ==
−
{{Specs-Avia-Armaments}}
 
 
=== Offensive armament ===
 
=== Offensive armament ===
−
{{Specs-Avia-Offensive}}
+
<!--''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.''-->
−
<!-- ''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.'' -->
 
 
{{main|MG 151/20 (20 mm)}}
 
{{main|MG 151/20 (20 mm)}}
  
 
The '''''{{PAGENAME}}''''' is armed with:
 
The '''''{{PAGENAME}}''''' is armed with:
  
−
* 3 x 20 mm MG 151/20 cannons, nose-mounted (300 rpg = 900 total)
+
* 6 x 20 mm MG 151/20 cannons (300 rpg = 1,800 total)
−
* 1 x 20 mm MG 151/20 cannons, chin-mounted (300 rpg)
 
−
* 2 x 20 mm MG 151/20 cannons, wing-mounted (300 rpg = 600 total)
 
  
−
The {{PAGENAME}} has 6 of the powerful MG 151/20s mounted in the centre of the aircraft and can utilise the minengeschoss round. Use "Stealth" or "Air targets" belts for best effectiveness.
+
The {{PAGENAME}} has 6 of the powerful MG 151/20's mounted in the centre of the aircraft nose and can utilize the Minengeschoss round. Use stealth or air target belts for best effectiveness.
  
 
=== Suspended armament ===
 
=== Suspended armament ===
−
{{Specs-Avia-Suspended}}
+
<!--''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.''-->
−
<!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
 
 
{{main|GP 50 (50 kg)|GP 100 (100 kg)}}
 
{{main|GP 50 (50 kg)|GP 100 (100 kg)}}
  
−
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
+
The '''''{{PAGENAME}}''''' can be outfitted with the following ordinance:
  
 
* Without load
 
* Without load
−
* 6 x 50 kg GP 50 bombs (300 kg total)
+
* 6 x GP 50 (300 kg total)
−
* 6 x 100 kg GP 100 bombs (600 kg total)
+
* 6 x GP 100 ( 600 kg total)
  
 
The {{PAGENAME}} can carry up to 6 x 100 kg bombs, which makes it useable in ground forces battles. Due to the rather small size of the bombs, you have to be extra accurate when dropping bombs.
 
The {{PAGENAME}} can carry up to 6 x 100 kg bombs, which makes it useable in ground forces battles. Due to the rather small size of the bombs, you have to be extra accurate when dropping bombs.
  
 
=== Defensive armament ===
 
=== Defensive armament ===
−
{{Specs-Avia-Defensive}}
+
<!--''Defensive armament with turret machine guns or cannons, crewed by gunners. Examine the number of gunners and what belts or drums are better to use. If defensive weaponry is not available, remove this subsection.''-->
−
<!-- ''Defensive armament with turret machine guns or cannons, crewed by gunners. Examine the number of gunners and what belts or drums are better to use. If defensive weaponry is not available, remove this subsection.'' -->
 
 
{{main|MG 151/20 (20 mm)}}
 
{{main|MG 151/20 (20 mm)}}
  
−
The '''''{{PAGENAME}}''''' is defended by:
+
The '''''{{PAGENAME}}''''' is defended by:  
  
−
* 1 x 20 mm MG 151/20 cannon, dorsal turret (350 rpg)
+
1 x 20 mm MG 151/20 cannon (350 RPG = 350 total)
  
−
The {{PAGENAME}} can defend itself very well from any tailing aircraft. Use "Universal" belts for the most effective defensive fire.
+
The {{PAGENAME}} can defend itself very well from any tailing aircraft. Use universal belts for the most effective defensive fire.
  
 
== Usage in battles ==
 
== Usage in battles ==
−
<!-- ''Describe the tactics of playing in the aircraft, the features of using aircraft in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
+
<!--''Describe the tactics of playing in an aircraft, the features of using vehicles in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''-->The SM.91 can be played in two different ways; Ground attacker or Interceptor.
−
When flying it as an interceptor, it can shred bombers apart with its powerful armament and can ward off escorts who try to tail it with its single 20 mm cannon. However, it is paramount that you come in from oblique angles when attacking bombers, as their gunners can easily take out your pilot due to your lack of armour and bulletproof glass.
 
−
 
 
−
When flying it as a ground attacker, be wary that carrying the max payload will significantly decrease performance and you will be a prime target for low flying fighters like Yaks and Spitfires. However the maximum payload is rather weak, only 6 x 100 kg bombs with a max armour penetration value of 91 mm and a blast radius of 4 m. This means that you must land a near perfect or direct hit on medium and heavy tanks in order to destroy them.
 
−
 
 
−
====On Simulation Mode====
 
−
While flying on simulation mode you can take your time to reach a safe altitude around 3,500 to 5,000 m climbing within ally air space. Keep in mind that you should use this aircraft with a Boom and Run mindset, that being the case, you should dive on your target while remaining hidden for your enemy as long as possible. Remember that in order to concentrate your burst mass in one zone, and hence having a greater chance to destroy the enemy plane (module; i.e., wings, tail) in one pass, you should open fire according to the gun targeting distance you are using, being a good setup from 300 m to 500 m.
 
−
 
 
−
With your 6 x 20 mm MG 151/20 cannons you will be able to shoot down almost every enemy aircraft on your gunsight. However, always check the surroundings before attacking, you dont want to get swarmed after engaging with an enemy. You have to remember that most enemy aircraft, save bombers, are faster and turn better than you. Therefore, you need to choose your targets wisely.
 
−
 
 
−
If everything mentioned before goes wrong and you end up with an enemy, or in the worst case, multiple of them going after you, you still have one chance to get out of that situation alive and it is your dorsal turret. The plane is equipped with a 20 mm MG 151/20 cannon and, when used correctly, it can pose a serious threat to most enemy fighters tailing you.
 
−
 
 
−
It is recommended to perform evasive manoeuvres and wait until the enemy behind you gets in a range of <500 m, practically point blank. Therefore you will have an easier time leading your bullets in the enemy direction; when successfully hitting an enemy at this range it will just take a couple of direct hits to set the bandit on fire, or if you get a good shot at his wings, send him down immediately.
 
  
−
====Counter-tactics====
+
When flying it as an interceptor, it can shred bombers apart with its powerful armament and can ward off escorts who try to tail it with its single 20 mm cannon. However, it is paramount that you come in from oblique angles when attacking bombers, as their gunners can easily take out your pilot due to your lack of armour and bulletproof glass.  
−
<!--What to expect, if it would be in command of the enemy and how to counter it. (i.e. They will most likely BnZ, etc.)-->
 
−
Do not head-on this plane, the 6 x 20 mm cannons will most likely destroy your plane and do not underestimate the defensive cannon. Armed with minengeschoß belts, the nose-mounted cannons can easily cut your wings or set you on fire.
 
  
−
It is best to attack this plane from below since the deffensive 20 mm MG 151/20 cannon won't be able to aim lower than just a few degrees below the tail. Keep also in mind that even a P-47 can outturn it, so if an SM.91 gets behind you, force him to turn and make it lose energy.
+
When flying it as a ground attacker, be weary that carrying the max payload will significantly decrease performance and you will be a prime target for low flying fighters like Yak's and Spitfires. However the maximum payload is rather weak, only 6 100 kg bombs with a max armour pen value of 91 mm and a death radius of 4 meters. This means that you land a near perfect or direct hit on the medium and heavy tanks in order to destroy them.
  
−
If you are flying an aircraft with decent performance in vertical manoeuvres, force the SM.91 to fight on the vertical. Due to the deficient acceleration capacity combined with a bad performance when going vertical, you will most likely get guns on target rather easily with this tactic.
+
===Manual Engine Control===
−
 
 
−
=== Manual Engine Control ===
 
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 
|-
 
|-
 
! colspan="7" | MEC elements
 
! colspan="7" | MEC elements
 
|-
 
|-
−
! rowspan="2" | Mixer
+
! rowspan="2" |Mixer
−
! rowspan="2" | Pitch
+
! rowspan="2" |Pitch
−
! colspan="3" | Radiator
+
! colspan="3" |Radiator
−
! rowspan="2" | Supercharger
+
! rowspan="2" |Supercharger
−
! rowspan="2" | Turbocharger
+
! rowspan="2" |Turbocharger
 
|-
 
|-
−
! Oil !! Water !! Type
+
! Oil
 +
! Water
 +
! Type  
 
|-
 
|-
−
| Not controllable || Controllable<br>Not auto controlled || Controllable<br>Not auto controlled || Controllable<br>Not auto controlled || Separate || Not controllable<br>1 gear || Not controllable
+
| Controllable || rowspan="2" | Not controllable || rowspan="2" | Not controllable || rowspan="2" | Not controllable || rowspan="2" | Separate || rowspan="2" | Not ontrollable || rowspan="2" | Not controllable
 
|-
 
|-
 
|}
 
|}
  
−
The SM.91 has a very forgiving MEC, therefore don't worry about killing your engine and try different settings according to the maps conditions.
+
===Modules===
−
 
+
{| class="wikitable"
−
As a general setting you can: set the water and oil radiator at 30%, it will be a long time before cooling off is needed if using 100% throttle, however if WEP is engaged then you will need to open both radiators up to 45%; propeller pitch set at 100% when climbing and lower it to 85%-90% when going horizontal.
+
! colspan="1" | Tier
−
 
+
! colspan="2" | Flight performance
−
If the engines take damage, it will usually be only one of them. That said, the SM.91 is able to fly with only one of its engines working. However, try to extend its life span or even keep the engine alive until you are back at the airfield to repair.
+
! colspan="1" | Survivability
−
 
+
! colspan="2" | Weaponry
−
In order to do this, set the damaged engine (or both, if that's the case) as follows: water and oil radiator at a 100%, propeller pitch at 0% to 30% depending if you really need a boost to, for example, get over a hill; and throttle to 50%.
+
|-
 +
| I
 +
| Fuselage Repair
 +
| Radiator
 +
|
 +
|Turret 20 mm belts
 +
|MCGP50
 +
|-
 +
| II
 +
|
 +
| Compressor
 +
| Airframe
 +
| New 20 mm cannons (turret)
 +
|-
 +
| III
 +
| Wings Repair
 +
| Engine
 +
|
 +
|Offensive 20 mm belts
 +
|MCSAP100
 +
|-
 +
| IV
 +
|
 +
| Engine Injection
 +
| Cover
 +
|New 20 mm cannons
 +
|-
 +
|}
  
 
=== Pros and cons ===
 
=== Pros and cons ===
−
<!-- ''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".'' -->
+
<!--''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "effective".''-->
  
 
'''Pros:'''
 
'''Pros:'''
  
−
* Devastating armament: 6 x centre-mounted 20 mm MG 151 cannons will make quick work of any aircraft
+
* 6 x 20 mm MG 151 in the centre of the aircraft
−
* Great for head-ons
+
* Main armament has an insane ammo capacity
−
* Main armament has a large ammo capacity
 
 
* Gets an attacker spawn (AB/RB)
 
* Gets an attacker spawn (AB/RB)
−
* 20 mm MG 151 cannon in the back turret
+
* 20 mm MG151 turret in the back
 
* Surprisingly good turn rate
 
* Surprisingly good turn rate
 
* Can act as a powerful interceptor
 
* Can act as a powerful interceptor
Line 202: Line 242:
 
'''Cons:'''
 
'''Cons:'''
  
−
* Tail is prone to snapping when under fire
+
* No armor protection
−
* No armour protection
 
 
* Big target
 
* Big target
 
* Lack of bulletproof glass means pilot is susceptible to getting knocked out, especially in head-ons
 
* Lack of bulletproof glass means pilot is susceptible to getting knocked out, especially in head-ons
 
* Wings are littered with fuel tanks
 
* Wings are littered with fuel tanks
 
* Carrying the largest payload has a noticeable effect on performance
 
* Carrying the largest payload has a noticeable effect on performance
−
* High tendency to flip forwards upon landing when braking
 
  
 
== History ==
 
== History ==
−
<!-- ''Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too 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).'' -->
+
<!--''Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ 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></nowiki></code>, as well as adding them at the end of the article.''-->
−
In 1942, the Regia Aeronautica requested a new, long range aircraft that was to be powered by the German DB 601 Inline Inverted V12, carry an 800 kg bomb load, have 6 x 20 mm main armament and a single 20 mm rear cannon. Savoia-Marchetti had previously worked on the SM.88 heavy fighter and the request for a long range fighter disqualified the 88, as it only had a 1,250 L fuel capacity. SM started to work on a new fighter named the SM.91 that was made entirely out of metal, had 6 x 20 mm MG 151 cannons (7 if you count the rear gunner) provided by Germany, was powered by two DB 605 engines and had a range of 1,600 km with a 1,600 L fuel capacity that could be enlarged to 1,800 L with auxiliary tanks.
+
in 1942, ''Regia Aeronautica'' requested a new, long range aircraft that was to be powered by the German DB 601 Inline Inverted V12, carry an 800 kg bomb load, have 6 x 20 mm main armament and a single 20 mm rear cannon. Savoia-Marchetti had previously worked on the SM.88 heavy fighter and the request for a long range fighter disqualified the 88, as it only had a 1,250 L fuel capacity. SM started to work on a new fighter named the SM.91 that was made entirely out of metal, had 6 20 mm MG 151 cannons (7 if you count the rear gunner) provided by Germany, was powered by two DB 605 engines and had a range of 1,600 km with a 1,600 L fuel capacity that could be enlarged to 1,800 L with auxiliary tanks.  
  
 
The two prototypes that were produced made their maiden flight on the 11th of May, 1943 and logged 27 hours at Vergiate. However, it was never entered into the official trials, mainly due to it still being in testing. The first prototype was captured and sent to Germany, and the second prototype was presumed to have been destroyed by bombers.
 
The two prototypes that were produced made their maiden flight on the 11th of May, 1943 and logged 27 hours at Vergiate. However, it was never entered into the official trials, mainly due to it still being in testing. The first prototype was captured and sent to Germany, and the second prototype was presumed to have been destroyed by bombers.
  
 
== Media ==
 
== Media ==
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== See also ==
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== See also ==
 
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* ''reference to the series of the aircraft;''
 
* ''reference to the series of the aircraft;''
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* ''links to approximate analogues of other nations and research trees.''
  
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== External links ==
 
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* ''encyclopedia page on aircraft;''
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* [https://forum.warthunder.com/index.php?/topic/436359-sm-91/ Official data sheet - more details about the performance]
 
  
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{{AirManufacturer SM}}
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{{Italy attackers}}
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{{Italy strike aircraft}}
 

Revision as of 21:23, 13 June 2019

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SM.91
sm_91.png
SM.91

Description

The SM.91 in the garage


The SM.91 is a Rank Italian attacker with a battle rating of (AB), (RB), and (SB). This aircraft was introduced in Update 1.85 "Supersonic".

General info

Flight Performance

The SM.91 fulfils a similar role to the P-38 when flown as an interceptor; a twin-engined fighter that is surprisingly capable as a dogfighter due to its good turn rate, especially when spaded. The twin Piaggio P.XI RC.40 12 cylinder inlines, which happen to be a pair of the powerful DB 605 Inverted V12 engines, are placed away from the cockpit, meaning its hard to take them out in a head-on. However, the heavy nature of the plane means that its acceleration is quite sluggish at low altitudes. The aircraft also sports leading edge wing slats that shorten the turning circle and has airbrakes that can help it slow down in a dive and help when landing on an airfield, which is already fairly easy due to its tri landing gear.

Characteristics
Stock
Max Speed
(km/h at 7,010 m) 		Max altitude
(meters) 		Turn time
(seconds) 		Rate of climb
(meters/second) 		Take-off run
(meters)
AB RB AB RB AB RB
553 545 9,500 21.4 21.9 9.3 9.3 400
Upgraded
Max Speed
(km/h at 7,010 m) 		Max altitude (meters) Turn time (seconds) Rate of climb
(meters/second) 		Take-off run (meters)
AB RB AB RB AB RB
611 585 9,500 19.0 20.0 15.3 12.0 400

Details

Features
Combat flap Take-off flap Landing flap Air brakes Arrestor gear
✓ ✓ ✓ ✓ X
Limits
Wing-break speed
(km/h) 		Gear limit
(km/h) 		Combat flap
(km/h) 		Max Static G
+ -
 ??? ~?? ~?
Optimal velocities
Ailerons
(km/h) 		Rudder
(km/h) 		Elevators
(km/h) 		Radiator
(km/h)
< ??? < ??? < ??? > ???
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
 ?,??? m  ??? hp  ?,??? hp

Survivability and armour

  • No armour plating
  • Critical components located at the front of aircraft (fuel, pilot, engine, controls)
  • More fuel tanks located in wings near the fuselage

Armaments

Offensive armament

Main article: MG 151/20 (20 mm)

The SM.91 is armed with:

  • 6 x 20 mm MG 151/20 cannons (300 rpg = 1,800 total)

The SM.91 has 6 of the powerful MG 151/20's mounted in the centre of the aircraft nose and can utilize the Minengeschoss round. Use stealth or air target belts for best effectiveness.

Suspended armament

Main articles: GP 50 (50 kg), GP 100 (100 kg)

The SM.91 can be outfitted with the following ordinance:

  • Without load
  • 6 x GP 50 (300 kg total)
  • 6 x GP 100 ( 600 kg total)

The SM.91 can carry up to 6 x 100 kg bombs, which makes it useable in ground forces battles. Due to the rather small size of the bombs, you have to be extra accurate when dropping bombs.

Defensive armament

Main article: MG 151/20 (20 mm)

The SM.91 is defended by:

1 x 20 mm MG 151/20 cannon (350 RPG = 350 total)

The SM.91 can defend itself very well from any tailing aircraft. Use universal belts for the most effective defensive fire.

Usage in battles

The SM.91 can be played in two different ways; Ground attacker or Interceptor.

When flying it as an interceptor, it can shred bombers apart with its powerful armament and can ward off escorts who try to tail it with its single 20 mm cannon. However, it is paramount that you come in from oblique angles when attacking bombers, as their gunners can easily take out your pilot due to your lack of armour and bulletproof glass.

When flying it as a ground attacker, be weary that carrying the max payload will significantly decrease performance and you will be a prime target for low flying fighters like Yak's and Spitfires. However the maximum payload is rather weak, only 6 100 kg bombs with a max armour pen value of 91 mm and a death radius of 4 meters. This means that you land a near perfect or direct hit on the medium and heavy tanks in order to destroy them.

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Controllable Not controllable Not controllable Not controllable Separate Not ontrollable Not controllable

Modules

Tier Flight performance Survivability Weaponry
I Fuselage Repair Radiator Turret 20 mm belts MCGP50
II Compressor Airframe New 20 mm cannons (turret)
III Wings Repair Engine Offensive 20 mm belts MCSAP100
IV Engine Injection Cover New 20 mm cannons

Pros and cons

Pros:

  • 6 x 20 mm MG 151 in the centre of the aircraft
  • Main armament has an insane ammo capacity
  • Gets an attacker spawn (AB/RB)
  • 20 mm MG151 turret in the back
  • Surprisingly good turn rate
  • Can act as a powerful interceptor
  • Made entirely out of metal, so it can take some punishment.
  • Fuel tanks are self-sealing

Cons:

  • No armor protection
  • Big target
  • Lack of bulletproof glass means pilot is susceptible to getting knocked out, especially in head-ons
  • Wings are littered with fuel tanks
  • Carrying the largest payload has a noticeable effect on performance

History

in 1942, Regia Aeronautica requested a new, long range aircraft that was to be powered by the German DB 601 Inline Inverted V12, carry an 800 kg bomb load, have 6 x 20 mm main armament and a single 20 mm rear cannon. Savoia-Marchetti had previously worked on the SM.88 heavy fighter and the request for a long range fighter disqualified the 88, as it only had a 1,250 L fuel capacity. SM started to work on a new fighter named the SM.91 that was made entirely out of metal, had 6 20 mm MG 151 cannons (7 if you count the rear gunner) provided by Germany, was powered by two DB 605 engines and had a range of 1,600 km with a 1,600 L fuel capacity that could be enlarged to 1,800 L with auxiliary tanks.

The two prototypes that were produced made their maiden flight on the 11th of May, 1943 and logged 27 hours at Vergiate. However, it was never entered into the official trials, mainly due to it still being in testing. The first prototype was captured and sent to Germany, and the second prototype was presumed to have been destroyed by bombers.

Media

An excellent addition to the article will be video guides, as well as screenshots from the game and photos.

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 aircraft;
  • other literature.


Italy strike aircraft
  Ba.65 (K.14) L · Breda 88 (P.XI) · F.C.20 Bis · P.108A serie 2
  Ro.57 Quadriarma · SM.91 · SM.92
Hungary  ◐Bf 110 G-4 · ◔IL-10
Romania  Hs 129 B-2 (Romania)

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