JA37D

This page is about the Swedish jet fighter JA37D. For other versions, see SAAB 37 Viggen (Family).

JA37D

JA37C

JAS39A

JA37D

JA37C

JAS39A

Sweden

VIII Rank

Battle rating:

AB	RB	SB
11.7	11.3	11.3

Class:

Fighter

Jet fighter

Research:400 000

Purchase:1 080 000

Show in game

Description

The JA37D is an improvement made over the JA37C, the aircraft received improved avionics, electronic countermeasures in the form of external pods and navigation systems. The cockpit was also modernized. The JA37D retained the same PS 46/A radar from the JA37C, but received the ability to carry the RB 99 missile, which is the Swedish designation of the AIM-120AMRAAM, allowing the aircraft to serve until the JAS 39 Gripen was available.

It was introduced in Update "Apex Predators". The JA37D Viggen plays very simmilarly to its predecessor, but it now has access to the RB 74, which is the Swedish designation for the AIM-9L, having access to a very capable short-medium range IR missile gives the Viggen the ability to fight at high altitudes and launch missiles to enemies below, however if this tactic is employed be aware of enemy radar missiles. The flight performance stays the same, with the JA37D being an aircraft with a below average acceleration and poor top speed, but with a good turning radius thanks to its delta wing configuration.

General info

Flight performance

Air brakes

Allows you to dramatically reduce the flight speed by releasing special flaps

Max speed

at 11 000 m1 998 km/h

Turn time25 s

Max altitude14 500 m

EngineSvenska Flygmotor RM8B

Type

Cooling systemAir

Take-off weight19 t

Characteristics	Max speed (km/h at 11,000 m)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	1,923	1,877	14500	26.1	26.3	168.4	157.8	500
Upgraded	2,062	1,998		23.9	25.0	234.1	200.0

Details

Features
Combat flaps	Take-off flaps	Landing flaps	Air brakes	Arrestor gear	Drogue chute	Thrust reversal
X	X	✓	✓	X	X	✓*

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
1,536	620	-	-	400	~13	~3

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 865	< 700	< 520	-

Engine performance

Engine			Aircraft mass
Engine name		Number	Basic mass			Wing loading (full fuel)
Svenska Flygmotor RM8B		1	12,315 kg			334 kg/m2
Engine characteristics			Mass with fuel (no weapons load)					Max Gross Weight
Weight (each)	Type		14m fuel	20m fuel	30m fuel	45m fuel	48m fuel
2,350 kg	Afterburning low-bypass turbofan		13,635 kg	14,119 kg	15,021 kg	16,374 kg	16,715 kg	19,716 kg
Maximum engine thrust @ 0 m (RB/SB)			Thrust to weight ratio @ 0 m (WEP)
Condition	100%	WEP	14m fuel	20m fuel	30m fuel	45m fuel	48m fuel	MGW
Stationary	6,800 kgf	11,290 kgf	0.83	0.80	0.75	0.69	0.68	0.57
Optimal	6,800 kgf (0 km/h)	16,377 kgf (1,250 km/h)	1.20	1.16	1.09	1.00	0.98	0.83

Survivability and armour

Flares/Chaff

Aircraft countermeasures to distract IR and radar-guided missiles and also AA radar

Crew1 person

Speed of destruction

Structural0 km/h

Gear620 km/h

The JA37D, being mainly used for fighter-interceptor purposes, is not equipped with any sort of armour plating against ammunition. While a hit at close range has a high probability of damaging the control systems, a hit from a further distance will probably not cause any considerable damage to the aforementioned controls, however, the fuel tank above the engine does pose a great vulnerability when being fired upon. As a result of the fuel tanks' placement, a fire is a constant threat. Apart from the fuel tanks, the large ailerons are an easy target, and losing a single one will result in loss of control over the aircraft.

Modifications and economy

Repair costBasic → Reference

AB2 690 → 4 223

RB7 875 → 12 363

SB8 971 → 14 084

Total cost of modifications306 000

470 000

Talisman cost3 100

Crew training310 000

Experts1 080 000

Aces3 400

Research Aces1 280 000

Reward for battleAB / RB / SB

100 / 320 / 540 %

250 / 250 / 250 %

Modifications

Flight performance	Survivability	Weaponry
Compressor Research: 15 000 Cost: 23 000 430 New boosters Research: 14 000 Cost: 22 000 400 Engine Research: 25 000 Cost: 38 000 710	Fuselage repair Research: 15 000 Cost: 23 000 430 Airframe Research: 14 000 Cost: 22 000 400 Wings repair Research: 19 000 Cost: 29 000 540 Cover Research: 25 000 Cost: 38 000 710	Flares/Chaff Research: 15 000 Cost: 23 000 430 akan_m75_belt_pack Research: 15 000 Cost: 23 000 430 Flares/Chaff Research: 14 000 Cost: 22 000 400 RB24J Research: 14 000 Cost: 22 000 400 m/70 Research: 14 000 Cost: 22 000 400 G-suit Research: 19 000 Cost: 29 000 540 akan_m75_new_gun Research: 19 000 Cost: 29 000 540 RB 74 Research: 19 000 Cost: 29 000 540 NVD Research: 25 000 Cost: 38 000 710 RB71 Research: 25 000 Cost: 38 000 710

Armaments

Ballistic Computer
CCIP (Guns)	CCIP (Rockets)	CCIP (Bombs)	CCRP (Bombs)	Lead indicator

Offensive armament

The JA37D is armed with:

• A choice between two presets:
  • 1 x 30 mm Akan m/75 cannon, belly-mounted (150 rpg) + 48 x large calibre countermeasures
  • 1 x 30 mm Akan m/75 cannon + 48 x large calibre countermeasures + 320 x countermeasures

Suspended armament

The JA37D can be outfitted with the following ordnance:

	1	2	3	4	5	6	7
psrak m/70 rockets		6	6		6	6
RB24J missiles	1	1	1		1	1	1
RB71 missiles		1				1
RB 74 missiles	1	1	1		1	1	1
1,250 l drop tanks				1

Default weapon presets
1 x 1,250 l drop tank 2 x RB24J missiles 6 x RB24J missiles 6 x RB 74 missiles 2 x RB71 missiles 24 x psrak m/70 rockets

Usage in battles

The JA37D is a highly manoeuvrable aircraft and outperforms most jets in its class, especially at lower altitudes (< 3,000 m). At higher altitudes, the Viggen remains manoeuvrable but, due to its delta-canard configuration, it is prone to losing speed and energy rather fast. This however does not pose much of an issue thanks to the aircraft's effective engine and high rate of acceleration at speeds above 700 km/h and aerodynamics.

In the case of a close range dogfight, you should avoid using AAMs and instead opt for the aircraft's cannon, taking advantage of its high muzzle velocity.

If an enemy positions themselves directly behind you, do not hesitate to use your airbrakes as these are very effective in defensive manoeuvres to regain control of the engagement.

Pros and cons

Pros:

• Large amount of countermeasures
• Can carry a drop tank extending the plane's range
• Good acceleration
• Can carry highly manoeuvrable missiles, such as the all-aspect RB74 (Swedish license-built AIM-9L) with a 30G maximum overload
• Equipped with a ballistic lead indicator to assist with gun aiming

Cons:

• Very limited ammo supply with only 150 rounds
• No bombs or guided air-to-ground missiles
• The afterburner's fuel consumption is overwhelmingly fast

History

The JA37D Viggen is an improved variant of the original JA37 Jaktviggen fighter-interceptor, The D variant of the Viggen first began its production in 1993 and served the Swedish airforce until 2006, with its last flight being in December 2007 during a special air show for the Swedish Air Force. The JA37D features improved, avionics, software systems of the previous JA37C, as a modernization for the ageing airframes.

However one of the main changes for the D variant, were the compatibility to equip and use the Rb 99 Air-To-Air Missile (Swedish designation for the AIM-120 AMRAAM). It could also be equipped with a external ECM pod designated as the "Störkapsel U95". This allowed it to serve until the late 2000s, before being completely replaced by the more advanced JAS 39 Gripen jet fighter.

Media

Skins

• Skins and camouflages for the JA37D from live.warthunder.com.

Images

• 

  JA37D taking off from airstrip on the Denmark test flight map

• 

  Interior view of the JA37D cockpit

• 

  Interior cockpit instruments view inside the JA37D cockpit

• 

  JA37D Thunder God camouflage

See also

• SAAB 37 Viggen (Family)

External links

• Ja 37D - Active radar Viggen suggestion
• [Wikipedia] Saab 37 Viggen - Variants

Sweden jet aircraft
Fighters	J21RA
	J29A · A29B · J29D · J29F
	J32B
	J34
	J35A · J35D
	JA37C · JA37D
	JAS39A
Strike aircraft	A21RB
	A32A · A32A Röd Adam
	A28B
	AJ37 · AJS37
	SK60B · SAAB-105G
Export	SAAB-105OE
Finland	▄Vampire FB 52A · ▄MiG-21bis · Saab J35XS