SB 2M-103U (China)

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Tu-1 Pack
This page is about the Chinese bomber SB 2M-103U (China). For other variants, see SB 2M (Family).
␗SB 2M-103U
sb_2m_103u_china.png
GarageImage SB 2M-103U (China).jpg
␗SB 2M-103U
AB RB SB
2.7 2.3 2.3
Research:7 900 Specs-Card-Exp.png
Purchase:10 000 Specs-Card-Lion.png
Show in game

Description

The ␗SB 2M-103U is a rank II Chinese bomber with a battle rating of 2.7 (AB) and 2.3 (RB/SB). It was introduced in Update 1.91 "Night Vision". The Tupolev SB 20-103U is a mid 30's tactical bomber and is used as such in the game to strike bases or ground targets.

General info

Flight performance

Max speed
at 4 000 m423 km/h
Turn time24 s
Max altitude9 560 m
Engine2 х Klimov M-103A
TypeInline
Cooling systemWater
Take-off weight8 t
Characteristics Max Speed
(km/h at 4,000 m)
Max altitude
(metres)
Turn time
(seconds)
Rate of climb
(metres/second)
Take-off run
(metres)
AB RB AB RB AB RB
Stock 403 388 9560 25.0 25.7 5.8 5.8 366
Upgraded 446 423 24.0 24.2 13.0 8.9

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
X X
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
580 350 315 309 280 ~4 ~3
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 250 < 300 < 185 > 350

Survivability and armour

Crew4 people
Speed of destruction
Structural580 km/h
Gear350 km/h

This aircraft is lightweight compared to its colleagues such as the B-34 or the Maryland. It only has 6 mm steel behind the pilot and a poor defensive armament. But the fact that it is lightweight allows the plane to be more fast and manoeuvrable than a lot of 2.3 medium bombers. To survive, you don't especially need to fly in formation, you'll just have to make a detour to get away from main combat. The fuel tanks are located in the wings. There are 2 in each wing, and are self-sealing.

Modifications and economy

Repair costBasic → Reference
AB420 → 525 Sl icon.png
RB1 100 → 1 376 Sl icon.png
SB1 200 → 1 501 Sl icon.png
Total cost of modifications6 890 Rp icon.png
9 490 Sl icon.png
Talisman cost530 Ge icon.png
Crew training3 000 Sl icon.png
Experts10 000 Sl icon.png
Aces130 Ge icon.png
Research Aces160 000 Rp icon.png
Reward for battleAB / RB / SB
30 / 100 / 210 % Sl icon.png
112 / 112 / 112 % Rp icon.png
Modifications
Flight performance Survivability Weaponry
Mods aerodinamic fuse.png
Fuselage repair
Research:
460 Rp icon.png
Cost:
630 Sl icon.png
70 Ge icon.png
Mods radiator.png
Radiator
Research:
460 Rp icon.png
Cost:
630 Sl icon.png
70 Ge icon.png
Mods compressor.png
Compressor
Research:
780 Rp icon.png
Cost:
1 100 Sl icon.png
120 Ge icon.png
Mods aerodinamic wing.png
Wings repair
Research:
350 Rp icon.png
Cost:
480 Sl icon.png
60 Ge icon.png
Mods new engine.png
Engine
Research:
350 Rp icon.png
Cost:
480 Sl icon.png
60 Ge icon.png
Mods metanol.png
Engine injection
Research:
1 100 Rp icon.png
Cost:
1 500 Sl icon.png
180 Ge icon.png
Mods armor frame.png
Airframe
Research:
350 Rp icon.png
Cost:
480 Sl icon.png
60 Ge icon.png
Mods armor cover.png
Cover
Research:
1 100 Rp icon.png
Cost:
1 500 Sl icon.png
180 Ge icon.png
Mods ammo.png
shkas_turret_belt_pack
Research:
460 Rp icon.png
Cost:
630 Sl icon.png
70 Ge icon.png
Mod arrow 1.png
Mods pilon bomb.png
Der-33
Research:
780 Rp icon.png
Cost:
1 100 Sl icon.png
120 Ge icon.png
Mod arrow 0.png
Mods turret gun.png
shkas_turret_new_gun
Research:
350 Rp icon.png
Cost:
480 Sl icon.png
60 Ge icon.png
Mods pilon bomb.png
Der-19
Research:
350 Rp icon.png
Cost:
480 Sl icon.png
60 Ge icon.png

Armaments

Suspended armament

List of setups (8)
Setup 16 x 100 kg FAB-100sv bomb
Setup 22 x 250 kg FAB-250sv bomb
6 x 100 kg FAB-100sv bomb
Setup 32 x 250 kg FAB-250sv bomb
Setup 42 x 250 kg FAB-250sv bomb
2 x 250 kg FAB-250sv bomb
Setup 52 x 500 kg FAB-500sv (welded) bomb
2 x 250 kg FAB-250sv bomb
Setup 61 x 500 kg FAB-500sv bomb
Setup 72 x 500 kg FAB-500sv (welded) bomb
1 x 500 kg FAB-500sv bomb
Setup 82 x 250 kg FAB-250sv bomb
1 x 500 kg FAB-500sv bomb

The SB 2M-103U (China) can be outfitted with the following ordnance:

  • 6 x 100 kg FAB-100sv bombs (600 kg total)
  • 2 x 250 kg FAB-250sv bombs + 6 x 100 kg FAB-100sv bombs (1,100 kg total)
  • 2 x 250 kg FAB-250sv bombs (500 kg total)
  • 4 x 250 kg FAB-250sv bombs (1,000 kg total)
  • 2 x 500 kg FAB-500sv bombs + 2 x 250 kg FAB-250sv bombs (1,500 kg total)
  • 1 x 500 kg FAB-500sv bomb (500 kg total)
  • 3 x 500 kg FAB-500sv bombs (1,500 kg total)
  • 1 x 500 kg FAB-500sv bomb + 2 x 250 kg FAB-250sv bombs (1,000 kg total)

Defensive armament

Turret2 x 7.62 mm ShKAS machine gun
Ammunition1920 rounds
Fire rate1800 shots/min
Turret7.62 mm ShKAS machine gun
Ammunition500 rounds
Fire rate1800 shots/min
Turret7.62 mm ShKAS machine gun
Ammunition1920 rounds
Fire rate1800 shots/min
Main article: ShKAS (7.62 mm)

The SB 2M-103U (China) is defended by:

  • 2 x 7.62 mm ShKAS machine gun, nose turret (960 rpg = 1,920 total)
  • 1 x 7.62 mm ShKAS machine gun, dorsal turret (1,920 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 Simulator Mode, the general tactic still remains the same as for other bombers: base bombing and airfield bombing. However, unlike later bombers, the SB 2M is very challenging to control in the pitch axis, much like the equally unstable I-16. If you leave the joystick in its deadzone, the plane tends to automatically enter a climb or dive which, if unnoticed, will very likely lead to a stall or crash. Trimming doesn't seem to solve this issue. As you switch to the gunner sight, although you might have enabled the "autopilot when in gunner view" option, it will not always help since the aircraft will still pitch up and down like a ship on waves. Also, when you are changing to the gunner sight, there is a chance that the plane will randomly roll to one side which will make it enter a spin quickly, and you must level it immediately if this happens. Therefore, this plane can be quite frustrating to fly in Simulator.

When bombing airfields, be sure to fly above 2,000 m so the airfield AAA fire cannot hurt you. This is vital as the SB 2M is large and unprotected, its cooling systems are likely to get damaged leading to the engines overheating slowly. You can memorise the locations of each module in an airfield to maximise your damage. The long, visible airstrip is often the easiest target, however damaging other modules can also be very effective. The plane hangars are probably the second easiest since they are also quite visible: a column of big rectangular buildings. They impact the repair and reload speed of enemy aircraft. Other modules include the living quarter which is a series of small tents, and the fuel module which is a series of barrels with towers around.

Landing in Simulator:

The SB 2M has a pair of giant wings lifting its slim fuselage, providing great lift. Though this is good when flying, it can make landing much trickier for new pilots. The abundance of lift when landing will make the plane bounce off the ground and leap into the air again and again, and the falling process can be dangerous. The key is to slow it down more than any other bomber, as well as setting keybinds for "flaps down" and "flaps up" instead of the default "toggle flaps". This way you can use the desired flap position any time and not be limited to landing flaps only. When approaching the airfield, make sure to descend to around 400 m altitude when you are about 2 km away from the start of the runway. Cut throttle if you feel you are a bit too fast, so that when the airstrip occupies around 1/3 of your windscreen you are flying at about 220 km/h. Now deploy landing gears and combat flaps, and push the nose down to counter the extra lift. When you are even lower to the ground, decelerate further to around 160 km/h, use takeoff flaps and push down the nose more. This speed may appear dangerously close to many plane's stall speed, but the SB 2M can still glide quite well at this speed. At the last second before touchdown, decelerate to ~140 km/h and use landing flaps. If you are a bit slower or faster than expected, adjust throttle and flap position accordingly to control your speed. As such, the bomber will be slow enough to gently land without bouncing into the air, but still fast enough to generate adequate lift to ensure a soft landing. Finally, do not constantly hold the brakes. Tap the brake key, release it at once if the bomber's nose starts to dip down.

Against the SB 2M (applies to all modes):

New fighter and interceptor pilots should be extra careful when dealing with bombers, especially in Simulator since with "full real controls" the plane will manoeuvre much more gently, which makes itself an easy target to lead for the bomber's gunners.

If you are flying an early fighter (eg. He 51, Ki-10, F2A, etc) with weak armament (2-4 x 7.7 mm MGs or worse) you should use deflection shots. Imagine yourself as an air-to-air missile, fly on a path that will lead you crashing into the bomber, but adjust a little so that you will end up right behind the bomber instead of actually crashing into it (unless you are out of ammo). As the target passes in front of your guns, open fire. Make sure to engage from the SB 2M's underside, sides, or higher front to avoid its turrets. This way you give the SB 2M's gunners very small windows to lead and fire at you. Given your weak guns, target its critical components like the cockpit, gunners and engines. The pilot is ill-protected and may result in a surprising pilot snipe. Bullets to the engine compartment will either damage the engine or the cooling systems, hindering its speed. The gunners are also unprotected meaning they are easy to take out. With the SB 2M's gunner(s) knocked out, you can safely take your time and spray bullets at it until it dies.

If you are flying an interceptor/heavy fighter with great firepower and/or protection (eg. Do 217, Ki-45, etc), the most straightforward tactic is to just enter a tail chase behind the SB 2M and comfortably fire bursts at it. The SB 2M's 7.62 mm MGs will struggle to critically damage you. As for the safest tactic, it is still and will always be deflection shooting. A quick and well-placed burst will cripple the SB 2M's components easily. However given that most early-war heavy fighters and interceptors have poor flight characteristics (especially climb rate and energy retention) that limit them from doing manoeuvres to set up deflection shots, a tailchase might end up as the better solution most of the times.

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

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
  • 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

Although historically Sino-Russian relations (ROC and USSR at the time) were not good, right after the invasion of Japanese, on 21st August 1937, the Sino-Soviet Non-Aggression Pact (中蘇互不侵犯條約) was signed for supplies of weaponry from the Soviet Union; the Tupolev SB bombers were among the equipment received. The first batches of them were received in Lanzhou (蘭州, now the capital of Gansu Province) by the 1st Squadron, National Revolutionary Air Force (later ROCAF); these bombers were used in the first bombing operations against the Japanese in early 1938 along with Soviet Voluntary Air Force on Taipei's Songshan Airfield. There were also later deliveries to the NRAF in 1939 and 1940 which joined some of the major battles against Japanese forces. Spare parts for the SB also became the basis for the "XB-3" (轟研三式轟炸機) domestic design, but structural issues hindered further development.

After the introduction of B-25 to NRAF in 1943, the SB bombers were soon phased.

Media

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

See also

Aircraft of comparable role, configuration and era

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the aircraft;
  • 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-2S · Tu-2 · 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
  * 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.

China bombers
American  Martin 139WC*(␗B-10B) · ␗A-29 · ␗B-25J-30 · ␗PB4Y-2
German  ␗Hs 123 A-1
Soviet  ␗SB 2M-103U · ␗DB-3A · ␗Tu-2S-44 · ␗Tu-4
Japanese  ␗P1Y1 mod. 11
  *Export Name