Martin 139WC

Martin 139WC

␗DB-3A

Martin 139WC

␗DB-3A

China

I Rank

Battle rating:

AB	RB	SB
1.3	1.3	1.7

Class:

Bomber

Frontline bomber

Research:2 900

Purchase:700

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This page is about the Chinese bmober Martin 139WC. For other version, see B-10B.

Description

The Martin 139WC is a rank I Chinese bomber with a battle rating of 1.3 (AB/RB) and 1.7 (SB). It was introduced in Update 1.91 "Night Vision".

General info

Flight performance

Max speed

at 2 438 m370 km/h

Turn time21 s

Max altitude7 380 m

Engine2 х Wright Cyclone R-1820G2

TypeRadial

Cooling systemAir

Take-off weight7 t

Characteristics	Max Speed (km/h at 2,438 m)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	353	340	7380	21.9	22.7	5.6	5.6	600
Upgraded	389	370		20.1	21.0	10.5	7.7

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	+	-
564	235	340	340	235	~6	~3

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 200	< 270	< 290	> 307

Compressor (RB/SB)
Setting 1
Optimal altitude	100% Engine power	WEP Engine power
2,200 m	740 hp	844 hp

Survivability and armour

Crew4 people

Speed of destruction

Structural564 km/h

Gear235 km/h

The Martin 139WC does not have any armour. There are 4 self-sealing fuel tanks, with 2 in each wing.

Modifications and economy

Repair costBasic → Reference

AB111 → 138

RB159 → 198

SB211 → 263

Total cost of modifications2 960

885

Talisman cost190

Crew training200

Experts1 000

Aces20

Research Aces96 000

Reward for battleAB / RB / SB

10 / 30 / 50 %

100 / 100 / 100 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Research: 150 Cost: 45 40 Radiator Research: 150 Cost: 45 40 Compressor Research: 220 Cost: 65 55 Wings repair Research: 185 Cost: 55 45 Engine Research: 185 Cost: 55 45 Engine injection Research: 480 Cost: 145 120	Airframe Research: 220 Cost: 65 55 Cover Research: 480 Cost: 145 120	bmg30_turret_belt_pack Research: 150 Cost: 45 40 100 GPs Research: 150 Cost: 45 40 200 GPs Research: 220 Cost: 65 55 bmg30_turret_new_gun Research: 185 Cost: 55 45 GP250 Research: 185 Cost: 55 45

Armaments

Suspended armament

List of setups (4)

Setup 16 x 100 kg SAP 100M bomb

Setup 26 x 100 kg No.1

Setup 32 x 200 kg No.1

Setup 42 x 250 kg GP 250 bomb

The Martin 139WC can be outfitted with the following ordnance:

• 6 x 100 kg SAP 100 bombs (600 kg total)
• 6 x 100 kg №.1 bombs (600 kg total)
• 2 x 200 kg №.1 bombs (400 kg total)
• 2 x 250 kg GP 250 bombs (500 kg total)

Defensive armament

3 х Turret7.62 mm Browning machine gun

Ammunition600 rounds

Fire rate1000 shots/min

The Martin 139WC is defended by:

• 1 x 7.62 mm Browning machine gun, nose turret (600 rpg)
• 1 x 7.62 mm Browning machine gun, dorsal turret (600 rpg)
• 1 x 7.62 mm Browning machine gun, ventral turret (600 rpg)

Usage in battles

As a bomber, the Martin 139WC does the job well. It can easily reach bombing points before interception and can damage a base with two 250 kg bombs, and can then turn away and return to base to rearm. If enemy fighters are at altitude, consider using clouds for cover, or entering a shallow dive towards friendly fighters, or the airfield.

This aircraft works very well defensively and can be very effective when flown with a squadmate. As this bomber is very manoeuvrable, it can out-turn most enemy fighters, but lacks the firepower to deal with them effectively, it has no fixed guns and is only equipped with .30 calibre machine guns, and controlling them manually in a dogfight isn't really a viable option. But when playing with a friend, the Martin 139WC can engage a fighter, and while manoeuvring, can draw the enemy into a low energy state, making it a very easy target to take out.

On your own, you can still comfortably dogfight one-on-one with most German and Italian monoplane aircraft, but if this fight is away from friendlies, another enemy fighter could engage with you, and being such a large target, a 2-on-1 fight likely won't go in your favour. As you are a big target, and with two enemies around you, one is likely going to take out a critical component sooner or later.

Try diving towards friendlies before engaging in a dogfight, the closer you are to your allies, the more likely it is that they'll come to your aid, the further away you are, the more likely it is that an enemy will join the fight instead.

If there are no enemies around later on in the match you can attack light ground targets by manually controlling your nose gunner, just make sure to watch out for any trees or ground hazards as there will be a delay before you can switch back to direct control of the aircraft.

Manual Engine Control

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

Modules

Tier	Flight performance		Survivability	Weaponry
I	Fuselage repair	Radiator		Turret 7 mm	100 GPs
II		Compressor	Airframe		200 GPs
III	Wings repair	Engine		New 7 mm MGs (turret)	MCGP250
IV		Engine injection	Cover

Pros and cons

Pros:

• Very manoeuvrable, has an impressively high turn rate for a bomber
• The frontal gunner, while only having a .30 cal, can be used as a manual weapon if you keep the front of the plane on an enemies tail, or for attacking ground targets
• As it's a less well-known aircraft, enemies may not know how to effectively fight it
• It can easily take fire from machine guns on the wings, and in general is fairly survivable
• While having limited fire arcs on the rear turrets, they cover a wide area and can surprise enemies that don't know they're there

Cons:

• It's a large target, and even though the critical components are hard to hit individually, the large wings and tail will accumulate damage over time
• Maximum bombload of 2 x 250 kg bombs is not a lot
• No armour protection at all, leaving it vulnerable to even small-calibre MG.
• Despite its comparatively good speed, most Axis aircraft can catch up to it easily
• Rear gunners have a slightly restricted field of view over the tail, where the gunners can't fire

History

Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

Media

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

See also

Aircraft of comparable role, configuration and era

• Tupolev SB
• Martin 167 Maryland
• Mitsubishi Ki-21
• Heinkel He 111
• Fiat BR.20

External links

Paste links to sources and external resources, such as:

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

Glenn L. Martin Company
Attackers	AM-1
Bombers	B-10B · B-26B · PBM-1 · PBM-3 · PBM-5A
Jet bombers	B-57A* · B-57B*
Export	Martin 139WC · Martin 167-A3 · B-26C
	* These aircraft were license-built from The English Electric Company Limited who developed and built the British English Electric Canberra.