Difference between pages "AN-M65A1 Fin M129 (1,000 lb)" and "SB 2M-103"

From War Thunder Wiki
(Difference between pages)
Jump to: navigation, search
Visual (beta)Wikitext
(Added a description of the weapon and comparisons)
 
(→‎Usage in battles)
 
Line 1: Line 1:
 +
{{Specs-Card|code=sb_2m_103c}}
 +
{{About
 +
| about = Russian bomber '''{{PAGENAME}}'''
 +
| usage = other variants
 +
| link = SB 2M (Family)
 +
}}
 +
 
== Description ==
 
== Description ==
−
''The AN-M65A1 Fin M129 1,000 lb bomb is an aerial bomb developed for the United States Army Air Corps and United States Navy in 1939, just prior to WWII. It is a General Purpose bomb that is employed agaisnt pretty much any target that may be encountered, and, due to its weight, has a powerful blast, and is very effective agaisnt vehicles, infrastructure and ships. It was designed to have a somewhat thin shell and pack the highest possible ammount of explosives (in this case, Amatol), and was used chiefly by heavy bombers such as the B-17 Flying Fortress and the B-24 Liberator, although smaller aircraft such as the P-47 Thunderbolt, P-51 Mustang and F4U Corsair could use it (but didnt as often).''
+
<!--''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.''-->
 +
 
 +
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left|]]
 +
{{break}}
 +
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Russian bomber {{Battle-rating}}. This aircraft has been in the game since the start of the Open Beta Test prior to Update 1.27.
 +
 
 +
== General info ==
 +
=== Flight Performance ===
 +
''Describe how the aircraft behaves in the air. Maximum speed, manoeuvrability, speed and allowable loads - these are the most important characteristics of the vehicle.''
  
−
After the war this bomb was more widely used, being commonly fitted to ground attack aircraft and was favoured by the US Navy, which used them extensively in the Korean War in the F9F Panther and AD-4 Skyraider. As it was being used by smaller aircraft that carried it externally instead instead of packing them into an internal bomb bay, measures were taken to reduce their drag, and so the M129 Fin was developed and fitted to this weapon.  
+
{| class="wikitable" style="text-align:center"
 +
|-
 +
! colspan="8" | Characteristics
 +
|-
 +
! colspan="8" | ''Stock''
 +
|-
 +
! colspan="2" | Max Speed<br>(km/h at ?,000 m)
 +
! rowspan="2" | Max altitude<br>(meters)
 +
! colspan="2" | Turn time<br>(seconds)
 +
! colspan="2" | Rate of climb<br>(meters/second)
 +
! rowspan="2" |Take-off run<br>(meters)
 +
|-
 +
! AB
 +
! RB
 +
! AB
 +
! RB
 +
! AB
 +
! RB
 +
|-
 +
| ? || ? || {{Specs|ceiling}} || ??.? || ??.? || ??.? || ??.? || ???
 +
|-
 +
! colspan="8" | ''Upgraded''
 +
|-
 +
! colspan="2" | Max Speed<br>(km/h at ?,000 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)
 +
|-
 +
! AB
 +
! RB
 +
! AB
 +
! RB
 +
! AB
 +
! RB
 +
|-
 +
| ? || ? || {{Specs|ceiling}} || ??.? || ??.? || ??.? || ??.? || ???
 +
|-
 +
|}
  
−
This bomb is also notable for being involved in the 1967 USS Forrestal fire, in which one of these bombs was detonated in the deck of the USS Forrestal by flaming jet fuel, killing dozens of sailors and wounding many more (the whole incident would have a death toll of 134 sailors killed and 161 wounded).
+
====Details====
 +
{| class="wikitable" style="text-align:center"
 +
|-
 +
! colspan="5" | Features
 +
|-
 +
! Combat flap
 +
! Take-off flap
 +
! Landing flap
 +
! Air brakes
 +
! Arrestor gear
 +
|-
 +
| ✓ || ✓ || ✓ || X || X    <!-- ✓ -->
 +
|-
 +
|}
  
−
=== Vehicles equipped with this weapon ===
+
{| class="wikitable" style="text-align:center"
−
<!-- ''List out vehicles that are equipped with the weapon.'' -->
+
|-
−
{{Navigation-Start|Vehicles equipped with this weapon}}
+
! colspan="5" | Limits
 +
|-
 +
! rowspan="2" | Wing-break speed<br>(km/h)
 +
! rowspan="2" | Gear limit<br>(km/h)
 +
! rowspan="2" | Combat flap<br> (km/h)
 +
! colspan="2" | Max Static G
 +
|-
 +
! +
 +
! -
 +
|-
 +
| {{Specs|разрушение|конструкции}} || {{Specs|разрушение|шасси}} || ??? || ~?? || ~?
 +
|-
 +
|}
  
−
{{Navigation-First-Line|'''Fighters'''}}{{Specs-Link|so_8000_narval|short}}
+
{| class="wikitable" style="text-align:center"
 +
|-
 +
! colspan="4" | Optimal velocities
 +
|-
 +
! Ailerons<br>(km/h)
 +
! Rudder<br>(km/h)
 +
! Elevators<br>(km/h)
 +
! Radiator<br>(km/h)
 +
|-
 +
| < ??? || < ??? || < ??? || > ???
 +
|-
 +
|}
  
−
{{Navigation-Line|'''Jet fighters'''}}
+
{| class="wikitable" style="text-align:center"
−
{{Navigation-Line|CL-13}}{{Specs-Link|f-86_cl_13_mk4_italy|short}}{{-}}{{Specs-Link|f-86_canadair_german|short}}{{-}}{{Specs-Link|f-86_cl_13b_mk6|short}}
+
|-
−
{{Navigation-Line|F9F}}{{Specs-Link|f9f-8|short}}
+
! colspan="3" | Compressor (RB/SB)
−
{{Navigation-Line|F-86A}}{{Specs-Link|f-86a-5|short}}
+
|-
−
{{Navigation-Line|F-86F}}{{Specs-Link|f-86f-2|short}}{{-}}{{Specs-Link|f-86f-25|short}}{{-}}{{Specs-Link|f-86f-30_japan|short}}{{-}}{{Specs-Link|f-86f-30_china|short}}{{-}}{{Specs-Link|f-86f-35|short}}{{-}}{{Specs-Link|f-86f-40_japan|short}}{{-}}{{Specs-Link|f-86f-40_japan_blue_impulse|short}}
+
! colspan="3" | Setting 1
−
{{Navigation-Line|MD.450}}{{Specs-Link|md_450b_barougan|short}}{{-}}{{Specs-Link|md_450b_ouragan|short}}
+
|-
−
{{Navigation-Line|MD.452}}{{Specs-Link|md_452_mystere_2c_preproduction|short}}
+
! Optimal altitude
−
{{Navigation-Line|MD.460}}{{Specs-Link|md_460|short}}
+
! 100% Engine power
 +
! WEP Engine power
 +
|-
 +
| ?,??? 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
 +
|- -->
 +
|}
  
−
{{Navigation-Line|'''Jet bombers'''}}{{Specs-Link|b-57|short}}{{-}}{{Specs-Link|b-57b|short}}{{-}}{{Specs-Link|so_4050_vautour_2a|short}}{{-}}{{Specs-Link|so_4050_vautour_2a_iaf|short}}{{-}}{{Specs-Link|so_4050_vautour_2b|short}}
+
=== Survivability and armour ===
 +
<!--Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured. Describe the armour, if there is any, also mention the vulnerability of other critical aircraft systems.-->
  
−
{{Navigation-End}}
+
* Single 6mm steel plate behind the pilot
 +
* No armour glazing
 +
* Fuel tanks located in wings
 +
* Self Sealing fuel tanks
  
−
== General info ==
+
== Armaments ==
−
''This bomb weighs 1,000 pounds, roughly 454 kg. This is a bomb of considerable size, and as such, is also quite powerful. Approximately half of this weight is comprised by the Amatol filling (530 lb or 240,4 kg), making this a very capable bomb, and can be very effective agaisnt pretty much any target.''
+
=== Suspended armament ===
 +
<!--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|FAB-100 (100 kg)|FAB-250M43 (250 kg)|FAB-500 (500 kg)}}
 +
 
 +
The '''''SB 2M-103''''' can be outfitted with the following ordnance:
 +
 
 +
* 6 x 100 kg FAB-100 bombs (600 kg total)
 +
* 2 x 250 kg FAB-250M43 bombs + 6 x 100 kg FAB-100 bombs (1100 kg total)
 +
* 2 x 250 kg FAB-250M43 bombs (500 kg total)
 +
* 4 x 250 kg FAB-250M43 bombs (1000 kg total)
 +
* 2 x 250 kg FAB-250M43 bombs + 2 x 500 kg FAB-500 bomb (1500 kg total)
 +
* 1 x 500 kg FAB-500 bomb (500 kg total)
 +
* 3 x 500 kg FAB-500 bomb (1500 kg total)
 +
* 2 x 250 kg FAB-250M43 bombs + 1 x 500 kg FAB-500 bomb (1000 kg total)
  
−
=== Effective damage ===
+
=== Defensive armament ===
−
''Being a General Purpose bomb, this wepaon relies on Blast and Splash damage effects to harm and destroy its targets.''
+
<!--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|ShKAS (7.62 mm)}}
  
−
=== Comparison with analogues ===
+
*2 x 7.62 mm ShKAS machine gun, nose turret (950 rpg = 1,900 total)
−
Similar weapons would be the German SC500 bomb (which is more powerful), the Soviet FAB-500 bomb (slightly weaker),  the British MC 1,000 lb Mark I bomb (considerably more powerful) and the LB GP 1,000 lb bomb (slighly weaker), the Japanese GP 500 kg bombs (both Army and Navy bombs are slightly weaker than the AN-M65A1), the Italian GP 500 kg bomb (slightly weaker) and the French 500 Nº 2 536 kg bomb (which is considerably more powerful).
+
*1 x 7.62 mm ShKAS machine gun, dorsal turret (1,000 rpg)
 +
*1 x 7.62 mm ShKAS machine gun, ventral turret (500 rpg)
  
 
== Usage in battles ==
 
== Usage in battles ==
−
''Describe situations when you would utilise this bomb in-game (vehicle, pillbox, base, etc)''
+
<!-- ''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).'' -->
 +
'''Arcade Battles:'''
 +
 
 +
This bomber is quite fast for its BR so you should use this as an advantage. For example, you should climb directly at the beginning of the match to 5,000 m and destroy the enemy bases with setup 5 (2 x 250 kg + 2 x 500 kg) which is the heaviest payload you'll have with this plane.
 +
 
 +
'''Realistic Battles:'''
 +
 
 +
In Realistic battles you should use the same tactics as in Arcade battles. Note that 2 x 500 kg FAB 500 bombs are enough to destroy a base.
 +
 
 +
'''Simulator Battles:'''
 +
 
 +
In Sim, the overall tactic remains the same as other bombers: base/airfield bombing. However, there are several notes for this particular SB 2M bomber.
 +
 
 +
Maybe it's because of the design of short fuselage and huge wings, or it's caused by something else, the SB 2M is super hard to control in the pitch. If you leave the stick at the deadzone, the aircraft will automatically climb or dive which will lead to a crash if unnoticed. Trimming doesn't help. For the gunner view, even though you might have the "autopilot when in gunner view" enabled, it won't help either, as it will still continuously pitch up and down like a boat. Also note that when switching to gunner view, it will sometimes uncontrollably roll to one side which will make it enter a spin quickly. Therefore this bomber is extremely frustrating to fly in Sim.
 +
 
 +
Note: the setup with the most explosive mass is the 2x 250 kg + 2x 500 kg, but this way the two 500 kg bombs are carried under the wing roots and the two 250 kg inside the bomb bay. So if you use the default keybind (space) to open bomb bay ''and'' drop bombs, the timing will get messed up when bombing a base, since the two wing-mounted bombs will go first, ''then'' the bomb bay opens, dropping the two inside. The time between the two drops are long enough for one drop to completely miss the target. To avoid this, set up a keybind for open / close bomb bay, and drop bomb series (all bombs go at once). When approaching a base, open the bomb base first, then drop all the bombs, they will now all hit the target.
 +
 
 +
When bombing airfields, make sure to fly above 2,000 m to avoid the AAA, as this plane is unprotected and its coolers will often get damaged, leading to the engines overheating. You should familiarise each module of the airfield to maximise the damage. The airstrip is the most visible and the easiest one to hit, however bombing it seems to halve your reward. So it is recommended to bomb everything else: hangar, fuel area, living quarters, etc. The plane hangars are probably easy, since they aren't too small.
 +
 
 +
'''Against the SB 2M (all modes but mostly in sim):'''
 +
 
 +
You should be very careful against bombers since with the Sim control (whether it be mouse joystick or a real stick) the plane will manoeuvre much more gently, making yourself a great target for the bomber's gunners. DO NOT follow behind the SB 2M's six unless you are sure that its tail gunners are unconscious. Chasing behind the SB 2M makes yourself pretty much stationary for the tail gunners, and you will be showered with 7.62 mm bullets.
 +
 
 +
If your plane is an early biplane armed with weak MG (2-4 x 7.7 mm or below), you should use deflection shots. That is, imagine yourself as an anti-air missile, predict where you two will meet and fly towards that point. This way it gives the gunners little window to open fire at you. When firing, try to aim for the cockpit for a possible pilot-snipe, as the pilot is very unprotected. Or aim at its engines to damage it or the cooler. Without an engine the SB 2M won't fly far.
 +
 
 +
If you are flying an interceptor/heavy fighter that is heavily armed and armoured, you can just sit behind the SB 2M and confidently take out its crew/modules one by one, as its 7.62 mm MG has rather weak penetration and damage. This is the most precise way of damaging an aircraft, however the safest tactic is still, and will always be deflection shooting. One accurate burst will critically damage the weak airframe of the SB 2M, or snap off its wing straight away.
 +
 
 +
=== Manual Engine Control ===
 +
{| class="wikitable" style="text-align:center"
 +
|-
 +
! colspan="7" | MEC elements
 +
|-
 +
! rowspan="2" | Mixer
 +
! rowspan="2" | Pitch
 +
! colspan="3" | Radiator
 +
! rowspan="2" | Supercharger
 +
! rowspan="2" | Turbocharger
 +
|-
 +
! Oil !! Water !! Type
 +
|-
 +
| Controllable || Controllable<br>Not auto controlled || Not controllable<br>Not auto controlled || Controllable<br>Not auto controlled || Combined || Not controllable<br>1 gear || Not controllable
 +
|-
 +
|}
 +
 
 +
=== Modules ===
 +
{| class="wikitable"
 +
! Tier
 +
! colspan="2" | Flight performance
 +
! Survivability
 +
! colspan="2" | Weaponry
 +
|-
 +
| I
 +
| Fuselage repair
 +
| Radiator
 +
|
 +
| Turret 7 mm
 +
|
 +
|-
 +
| II
 +
|
 +
| Compressor
 +
|
 +
|
 +
| DER-33
 +
|-
 +
| III
 +
| Wings repair
 +
| Engine
 +
| Airframe
 +
| New 7 mm MGs (turret)
 +
| Der-19
 +
|-
 +
| IV
 +
|
 +
|
 +
| Cover
 +
|
 +
|
 +
|-
 +
|}
  
 
=== Pros and cons ===
 
=== Pros and cons ===
−
''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.''
+
<!-- ''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".'' -->
  
 
'''Pros:'''
 
'''Pros:'''
  
−
*
+
* Adequate speed for a bomber, allowing it to get to targets quickly
 +
* Great turn rate allows it to change direction quickly, or to even dodge attacks
 +
* Nice payload allows it to finish off a base in one go, or destroy tanks / pillboxes easily
 +
* Great defensive firepower at the tail (2 x 7.62 mm MGs) with fast firerate, good trajectory and plenty of ammo allows it to deal with enemies on its six effectively
  
 
'''Cons:'''
 
'''Cons:'''
  
−
*
+
* Defensive guns don't cover the belly and the sides well, and are quite light against fighters such as [[Bf 109 E-1]] or [[Ki-61 (Family)|Ki-61]]
 +
* Crew and important parts (eg. fuel tank, engines, coolers) lack protection, increasing the chance of being pilot-sniped or critically damaged. Combined with its weak airframe, it is vulnerable to heavy fighters like [[Ju 88 (Family)|Ju 88]].
 +
* In Simulator, it is extremely hard to control. No matter how precisely you trim, it will always automatically pitch up and down. Also when switching to gunner view, it will roll, causing a death spin.
  
 
== History ==
 
== History ==
−
<!-- ''Describe the history of the creation and combat usage of the weapon 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 weapon and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-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>.'' -->
+
''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 "/ historical reference" (example: https://wiki.warthunder.com/Name-vehicles/historical reference) and add a link to it here using the <code>main</code> template. Be sure to include links to sources at the end of the article.''
−
Early in aviation history, applications for aircraft to serve in a military capacity surfaced, not only with the intent to scout a battlefield from an aerial vantage point but for the possibility to drop explosive bombs too. Due to the frail nature of the early wood-frame and cloth covered aircraft, lifting capacity resulted in the ability to only carry small bombs.  Effectively these early bombers were hailed as aerial artillery fire which could reach targets hundreds of miles further than the most powerful land-based cannons of the time. Prior to the war, contests abounded where pilots would drop oranges or flour sacks upon predesignated targets to see who could hit closes to the centre.
 
−
 
 
−
Italian aviators were the first to use bombs in a warfare capacity in 1912 during their campaign of Tripoli. These first bombs were conversions of existing cannon ammunition and were effective only against personnel as they did not provide a strong enough provision to damage hardened equipment or structures. As lifting capacity of aircraft increased, so did the ability for them to carry more and larger explosives.
 
−
 
 
−
For the United States, bomb design did not become a priority until the middle of 1917 when a French official came to the U.S. with several samples of the Gros Andreau bombs which the French were using in large quantities at that time. Immediately these bombs were accepted by the U.S. and used as a standard in developing the first three sizes to be implemented in the military. These three bombs were known as the early “Mark” series, 25 lb Mk.I demolition bomb, 50 lb  Mk.I demolition bomb and the 100 lb Mk.I demolition bomb. By December 1917, only six months later, the military put forth requirements for the development of bombs larger than the existing 100 lb bomb. After two more months of development, production of demolition bombs up to 1,000 lbs was started. Rejected 3-inch artillery rounds were the basis for early 25 lb bombs which were modified into a streamlined shape, very similar to the British Cooper bombs of the time. Larger bombs were manufactured and filled with explosive filler, all of which were placed into a streamlined body, of which a cylindrical shape was the most advantageous.
 
  
−
Early on, the Mark series of bombs proved to be largely unsatisfactory in a number of different areas. The bomb body itself was weak due to the sheet metal it was made from and the number of welds needed to join the pieces together. The stabilizing fins were made of flimsy metal which tended to distort during both the handling and flight of the bomb, adversely affecting accuracy.  For the field technicians, inserting the fuze was a complicated process which required removing the stabilizing fin structure potentially damaging the fins. The fuzes tended to have a high fail rate and due to their design, they would instantly arm after release from the aircraft posing a direct to the delivery aircraft. Later modifications would eliminate many of the negative factors to include adding a nose fuze, time delaying arming of the fuze, strengthening of the stabilizing fins and adding primer detonators to ensure proper explosive train sequences. Other changes including streamlining all bomb bodies and utilising 100% T.N.T. as an explosive filler resulted in the newer “Modified Mark” series of Army bombs.
+
=== In-game description ===
 +
In 1937, designers under the direction of A. A. Arkhangelski began working to improve the SB even more. The aircraft received a 960 hp Klimov M-103 twelve-cylinder, V-shaped, liquid-cooled engine. The M-103 engine, created in 1936-37, was based on the M-100.
  
−
Prior to World War II, the military determined that the Modified Mark series of bombs were obsolete requiring newer and up-to-date bombs to be developed.  Both the U.S. Army and Navy began development of their own series of bombs, the Army with the “M” series and the Navy with their “Mk” series. Both similar, these bombs were designed with parallel sides, an ogival nose and a boat tail which is a box type-tail reinforced to prevent warping and aid with accurate drops. Due to the shortage of T.N.T., the Army filled their bombs with 50/50 Amatol with T.N.T. ends to seal in the Amatol and protect it from moisture. The Navy, on the other hand, continued to manufacture their bombs with 100% T.N.T.
+
After testing was performed, the SB 2M-103 bomber was launched into full-scale production in 1938 under the designation of ""96th series"".
 +
SB 2M-103 planes of the 96th series had external DER-19 bomb racks under the centre wing section that were designed to carry aerial bombs weighing up to 500 kg. The aircraft's maximum bomb capacity was increased up to 1,500 kg. DER-19 racks could house external teardrop-shaped fuel tanks with a capacity of 370 litres each.
  
−
With the approach of World War II, the U.S. Army (including the Army Air Corps) and the Navy standardized their series of bombs allowing for interchanging between services, consolidating manufacturing capabilities and allowing for modifications which enabled British service aircraft to mount these bombs too. Even after the standardization of bombs in 1941, the standardization process went through a few phases of further refinement, the first of which changed all high-explosive bombs to be termed general purpose (G.P.) or general purpose high-explosive (G.P.H.E). Later the designation of demolition bomb would come back for a few specific bombs.
+
To improve reliability, a mechanical bomb release system was introduced and also duplicated in the pilot's cockpit. The aircraft was equipped with an AFA-13 photo camera. An electrohydraulic landing gear retraction system was used, and the pilot's chair received an armored backrest. Due to these many changes, the aircraft's flight weight increased significantly, and the airframe's structure was strengthened.
 +
From this point on, all production SB 2M-103s began to be produced with a shielded MV-3 gun turret and an LU hatch mount with an optical sight. An inert gas filling system was introduced for the fuel tanks.
  
−
When bombs are dropped, there is always a chance that something in the explosive train of the bomb will fail and it will not explode. Early AN style bombs were defuzable in the event they did not explode on contact, meaning that any unexploded AN bomb could have the fuzes and boosters removed without the bomb exploding, rendering it inert. To counter this and allow for the potential “dud” bomb to explode when tampered with, the AN G.P.H.E. series bombs with the modification “A1” annotated that these bombs now had special pins mounted in the bomb’s baseplate which fuzed with the explosive filler making it impossible to remove the booster without causing the bomb to detonate. Other modifications later added would include minor changes to the bomb body or the type of explosive filling used. During this time a second option for bomb tails was added, the box-type tail was already the mainstay of the bombs, however, to create a more aerodynamic bomb a conical tail assembly was added.  This stretched out low profile tail improved the aerodynamics of the carrying aircraft, allowing it to carry more ordnance.
+
Planes of later production series had modified M-103U and M-103A engines. These engines were equipped with ducted coolant radiators located over the engine. The power unit cowling was completely changed. For this, the engine oil coolers were moved to the leading edge of the outer wing.
  
−
Progressing towards the Korean and Vietnam wars, piston-driven aircraft were giving way to jet fighters, bombers and attackers, many of which carried their ordnance on external pylons hung under the wing or underbelly. The new Mk 80 series bombs (Mk 81, 82, 83 and 84) were developed to keep external hung ordnance from creating too much drag on the delivery aircraft. Initially, the Mk 81 250 lb bombs were considered ineffective for their size or required a large amount to be effective and were removed from the munitions inventory.  All-weather fighters and attackers were now being outfitted with the Mk series bombs and a new problem developed when it came to low-altitude attacks (typically coming in under low cloud cover) where the aircraft would deploy its ordinance  which would hit the ground and explode catching the delivery aircraft in either the explosive blast or the shock-wave from the blast.
+
This SB 2M-103 with ducted radiators became the most high-speed model among production SB bombers, reaching a speed of 450 km/h at a height of 4,100 m. These bombers were produced full-scale from 1939-40, being nicknamed ""Shchuka"" (""Pike"", as a fish) among the troops, due to the distinctive form of their engine cowls.
  
−
Modifications were developed to slow down or retard the flight of bombs, allowing for the delivery aircraft to depart out of the blast zone before they hit and detonated. Several options became available which allowed these bombs to remain aerodynamic low-drag while en-route to the target, but when deployed converted to high-drag, slower falling bombs. One option was to attach four bladed plates to the rear of the bomb so that when the bomb deployed, these plates would pop out and create high-drag to slow the fall. Another option was to use a ballute which was basically an airbag which deployed from the rear of the bomb that acted like a drogue chute, effectively causing high-drag. Later during the fighting in Iraq, the US military brought back the 250 lb Mk 81 bombs due to their ability to be used when deploying against a specific target and to help minimize collateral damage.
+
From December 1939 on, all SB bombers were equipped with VISh-22 three-bladed, controllable-pitch propellers.
  
 
== Media ==
 
== Media ==
−
''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.''
+
<!--Excellent additions to the article would be video guides, screenshots from the game, and photos.-->
 +
{{Youtube-gallery|1R9OL0Hf-yw|'''The Shooting Range #33''' - ''Pages of History'' section at 03:10 discusses the SB 2M.}}
  
 
== See also ==
 
== See also ==
−
<!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
+
<!--''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
−
* ''reference to the article about the variant of the weapon;''
+
* ''reference to the series of the aircraft;''
−
* ''references to approximate analogues by other nations and research trees.'' -->
+
* ''links to approximate analogues of other nations and research trees.''-->
  
−
* [[US Bombs General Information]]
+
;Aircraft of comparable role, configuration and era
  
−
== External links ==
+
* Martin [[B-10B|B-10]]
 +
* Martin [[Martin 139WC|139WC]]
 +
* Fiat [[BR.20 DR|BR.20]]
 +
* Martin [[Martin 167-A3|167]] Maryland
 +
* Mitsubishi [[Ki-21-Ia|Ki-21]]
 +
* Heinkel [[He 111 H-3|He 111]]
 +
 
 +
== Sources ==
 
''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
  
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
−
* ''encyclopedia page on the weapon;''
+
* ''page on aircraft encyclopedia;''
 
* ''other literature.''
 
* ''other literature.''
  
−
{{Bombs}}
+
{{AirManufacturer Tupolev}}
−
 
+
{{USSR bombers}}
−
[[Category:Suspended armaments]]
 

Revision as of 02:31, 6 July 2020

SB 2M-103
sb_2m_103c.png
SB 2M-103
USSR flag.png USSR
I Rank
Battle rating:
AB RB SB
2.0 2.0 2.0
Class:
Research:2 000 Specs-Card-Exp.png
Purchase:2 100 Specs-Card-Lion.png
Show in game
This page is about the Russian bomber SB 2M-103. For other variants, see SB 2M (Family).

Description

GarageImage SB 2M-103.jpg


The SB 2M-103 is a rank I Russian bomber with a battle rating of 2.0 (AB/RB/SB). This aircraft has been in the game since the start of the Open Beta Test prior to Update 1.27.

General info

Flight Performance

Describe how the aircraft behaves in the air. Maximum speed, manoeuvrability, speed and allowable loads - these are the most important characteristics of the vehicle.

Characteristics
Stock
Max Speed
(km/h at ?,000 m) 		Max altitude
(meters) 		Turn time
(seconds) 		Rate of climb
(meters/second) 		Take-off run
(meters)
AB RB AB RB AB RB
 ?  ? 9560  ??.?  ??.?  ??.?  ??.?  ???
Upgraded
Max Speed
(km/h at ?,000 m) 		Max altitude (meters) Turn time (seconds) Rate of climb
(meters/second) 		Take-off run (meters)
AB RB AB RB AB RB
 ?  ? 9560  ??.?  ??.?  ??.?  ??.?  ???

Details

Features
Combat flap Take-off flap Landing flap Air brakes Arrestor gear
✓ ✓ ✓ X X
Limits
Wing-break speed
(km/h) 		Gear limit
(km/h) 		Combat flap
(km/h) 		Max Static G
+ -
0 350  ??? ~?? ~?
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

  • Single 6mm steel plate behind the pilot
  • No armour glazing
  • Fuel tanks located in wings
  • Self Sealing fuel tanks

Armaments

Suspended armament

Main articles: FAB-100 (100 kg), FAB-250M43 (250 kg), FAB-500 (500 kg)

The SB 2M-103 can be outfitted with the following ordnance:

  • 6 x 100 kg FAB-100 bombs (600 kg total)
  • 2 x 250 kg FAB-250M43 bombs + 6 x 100 kg FAB-100 bombs (1100 kg total)
  • 2 x 250 kg FAB-250M43 bombs (500 kg total)
  • 4 x 250 kg FAB-250M43 bombs (1000 kg total)
  • 2 x 250 kg FAB-250M43 bombs + 2 x 500 kg FAB-500 bomb (1500 kg total)
  • 1 x 500 kg FAB-500 bomb (500 kg total)
  • 3 x 500 kg FAB-500 bomb (1500 kg total)
  • 2 x 250 kg FAB-250M43 bombs + 1 x 500 kg FAB-500 bomb (1000 kg total)

Defensive armament

Main article: ShKAS (7.62 mm)
  • 2 x 7.62 mm ShKAS machine gun, nose turret (950 rpg = 1,900 total)
  • 1 x 7.62 mm ShKAS machine gun, dorsal turret (1,000 rpg)
  • 1 x 7.62 mm ShKAS machine gun, ventral turret (500 rpg)

Usage in battles

Arcade Battles:

This bomber is quite fast for its BR so you should use this as an advantage. For example, you should climb directly at the beginning of the match to 5,000 m and destroy the enemy bases with setup 5 (2 x 250 kg + 2 x 500 kg) which is the heaviest payload you'll have with this plane.

Realistic Battles:

In Realistic battles you should use the same tactics as in Arcade battles. Note that 2 x 500 kg FAB 500 bombs are enough to destroy a base.

Simulator Battles:

In Sim, the overall tactic remains the same as other bombers: base/airfield bombing. However, there are several notes for this particular SB 2M bomber.

Maybe it's because of the design of short fuselage and huge wings, or it's caused by something else, the SB 2M is super hard to control in the pitch. If you leave the stick at the deadzone, the aircraft will automatically climb or dive which will lead to a crash if unnoticed. Trimming doesn't help. For the gunner view, even though you might have the "autopilot when in gunner view" enabled, it won't help either, as it will still continuously pitch up and down like a boat. Also note that when switching to gunner view, it will sometimes uncontrollably roll to one side which will make it enter a spin quickly. Therefore this bomber is extremely frustrating to fly in Sim.

Note: the setup with the most explosive mass is the 2x 250 kg + 2x 500 kg, but this way the two 500 kg bombs are carried under the wing roots and the two 250 kg inside the bomb bay. So if you use the default keybind (space) to open bomb bay and drop bombs, the timing will get messed up when bombing a base, since the two wing-mounted bombs will go first, then the bomb bay opens, dropping the two inside. The time between the two drops are long enough for one drop to completely miss the target. To avoid this, set up a keybind for open / close bomb bay, and drop bomb series (all bombs go at once). When approaching a base, open the bomb base first, then drop all the bombs, they will now all hit the target.

When bombing airfields, make sure to fly above 2,000 m to avoid the AAA, as this plane is unprotected and its coolers will often get damaged, leading to the engines overheating. You should familiarise each module of the airfield to maximise the damage. The airstrip is the most visible and the easiest one to hit, however bombing it seems to halve your reward. So it is recommended to bomb everything else: hangar, fuel area, living quarters, etc. The plane hangars are probably easy, since they aren't too small.

Against the SB 2M (all modes but mostly in sim):

You should be very careful against bombers since with the Sim control (whether it be mouse joystick or a real stick) the plane will manoeuvre much more gently, making yourself a great target for the bomber's gunners. DO NOT follow behind the SB 2M's six unless you are sure that its tail gunners are unconscious. Chasing behind the SB 2M makes yourself pretty much stationary for the tail gunners, and you will be showered with 7.62 mm bullets.

If your plane is an early biplane armed with weak MG (2-4 x 7.7 mm or below), you should use deflection shots. That is, imagine yourself as an anti-air missile, predict where you two will meet and fly towards that point. This way it gives the gunners little window to open fire at you. When firing, try to aim for the cockpit for a possible pilot-snipe, as the pilot is very unprotected. Or aim at its engines to damage it or the cooler. Without an engine the SB 2M won't fly far.

If you are flying an interceptor/heavy fighter that is heavily armed and armoured, you can just sit behind the SB 2M and confidently take out its crew/modules one by one, as its 7.62 mm MG has rather weak penetration and damage. This is the most precise way of damaging an aircraft, however the safest tactic is still, and will always be deflection shooting. One accurate burst will critically damage the weak airframe of the SB 2M, or snap off its wing straight away.

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Controllable Controllable
Not auto controlled 		Not controllable
Not auto controlled 		Controllable
Not auto controlled 		Combined Not controllable
1 gear 		Not controllable

Modules

Tier Flight performance Survivability Weaponry
I Fuselage repair Radiator Turret 7 mm
II Compressor DER-33
III Wings repair Engine Airframe New 7 mm MGs (turret) Der-19
IV Cover

Pros and cons

Pros:

  • Adequate speed for a bomber, allowing it to get to targets quickly
  • Great turn rate allows it to change direction quickly, or to even dodge attacks
  • Nice payload allows it to finish off a base in one go, or destroy tanks / pillboxes easily
  • Great defensive firepower at the tail (2 x 7.62 mm MGs) with fast firerate, good trajectory and plenty of ammo allows it to deal with enemies on its six effectively

Cons:

  • Defensive guns don't cover the belly and the sides well, and are quite light against fighters such as Bf 109 E-1 or Ki-61
  • Crew and important parts (eg. fuel tank, engines, coolers) lack protection, increasing the chance of being pilot-sniped or critically damaged. Combined with its weak airframe, it is vulnerable to heavy fighters like Ju 88.
  • In Simulator, it is extremely hard to control. No matter how precisely you trim, it will always automatically pitch up and down. Also when switching to gunner view, it will roll, causing a death spin.

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 big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ historical reference" (example: https://wiki.warthunder.com/Name-vehicles/historical reference) and add a link to it here using the main template. Be sure to include links to sources at the end of the article.

In-game description

In 1937, designers under the direction of A. A. Arkhangelski began working to improve the SB even more. The aircraft received a 960 hp Klimov M-103 twelve-cylinder, V-shaped, liquid-cooled engine. The M-103 engine, created in 1936-37, was based on the M-100.

After testing was performed, the SB 2M-103 bomber was launched into full-scale production in 1938 under the designation of ""96th series"". SB 2M-103 planes of the 96th series had external DER-19 bomb racks under the centre wing section that were designed to carry aerial bombs weighing up to 500 kg. The aircraft's maximum bomb capacity was increased up to 1,500 kg. DER-19 racks could house external teardrop-shaped fuel tanks with a capacity of 370 litres each.

To improve reliability, a mechanical bomb release system was introduced and also duplicated in the pilot's cockpit. The aircraft was equipped with an AFA-13 photo camera. An electrohydraulic landing gear retraction system was used, and the pilot's chair received an armored backrest. Due to these many changes, the aircraft's flight weight increased significantly, and the airframe's structure was strengthened. From this point on, all production SB 2M-103s began to be produced with a shielded MV-3 gun turret and an LU hatch mount with an optical sight. An inert gas filling system was introduced for the fuel tanks.

Planes of later production series had modified M-103U and M-103A engines. These engines were equipped with ducted coolant radiators located over the engine. The power unit cowling was completely changed. For this, the engine oil coolers were moved to the leading edge of the outer wing.

This SB 2M-103 with ducted radiators became the most high-speed model among production SB bombers, reaching a speed of 450 km/h at a height of 4,100 m. These bombers were produced full-scale from 1939-40, being nicknamed ""Shchuka"" (""Pike"", as a fish) among the troops, due to the distinctive form of their engine cowls.

From December 1939 on, all SB bombers were equipped with VISh-22 three-bladed, controllable-pitch propellers.

Media

The Shooting Range #33 - Pages of History section at 03:10 discusses the SB 2M.

See also

Aircraft of comparable role, configuration and era

Sources

Paste links to sources and external resources, such as:

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


Tupolev Design Bureau (Ту́полев Опытное конструкторское бюро)
Bombers  TB-3M-17-32 · SB 2M-100 · SB 2M-103 MV-3 · SB 2M-103 · SB 2M-103U · SB 2M-103U MV-3 · SB 2M-105
  Tu-2 · Tu-2S · Tu-2S-44 · Tu-2S-59 · Tu-4
Arkhangelsky Bomber  Ar-2*
Strike Aircraft  Tu-1
Jet Bomber  Tu-14T
Export  ␗SB 2M-103U · ␗Tu-2S-44 · ␗Tu-4
  ◔Tu-2S-59
  * While Andrei Tupolev was imprisoned, Alexander Arkhangelsky, second in command at Tupolev OKB was able to append his name to the final production series of the SB bomber.

USSR bombers
SB and Ar  SB 2M-100 · SB 2M-103 · SB 2M-103 MV-3 · SB 2M-103U · SB 2M-103U MV-3 · SB 2M-105 · Ar-2
Yer-2 (petrol)  Yer-2 (M-105) · Yer-2 (M-105) TAT · Yer-2 (M-105R) TAT · Yer-2 (M-105R) LU
Yer-2 (diesel)  Yer-2 (ACh-30B) (e) · Yer-2 (ACh-30B) (l)
Tu  Tu-2 · Tu-2S · Tu-2S-44 · Tu-2S-59 · Tu-4
Pe  Pe-2-1 · Pe-2-31 · Pe-2-83 · Pe-2-110 · Pe-2-205 · Pe-2-359 · Pe-8
IL  DB-3B · IL-4
Po  Po-2 · Po-2M
Other  MBR-2-M-34 · TB-3M-17-32 · Yak-4 · Be-6
Lend-Lease  ▂PBY-5A Catalina · ▂Hampden TB Mk I · ▂A-20G-30 · ▂B-25J-30

Retrieved from "https://wiki.warthunder.com/index.php?title=AN-M65A1_Fin_M129_(1,000_lb)&oldid=62859"