JA37D

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

JA37D

JA37D

Description

The JA37D Viggen is a rank Swedish jet fighter with a battle rating of (AB), (RB), and (SB). It was introduced in Update "Apex Predators".

The JA37D is a modernized version of the JA37C, introduced in the early 1990s, it served the purpose of modernizing the ageing fleet of Viggens in the Swedish air force and includes various improvements over the previous variant. In game, it includes various improvements, in favour of a better pilot experience as to further improve upon BVR (Beyond Visual Range) engagements and have a better overall combat efficiency rating.

General info

Flight performance

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		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		-	-	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

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.

Armaments

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

Offensive armament

The JA37D is armed with:

• A choice between three presets:
  • 1 x 30 mm Akan m/75 cannon, belly-mounted (150 rpg)
  • 1 x 30 mm Akan m/75 cannon + 48 x large calibre countermeasures
  • 1 x 30 mm Akan m/75 cannon + 368 x large calibre countermeasures

Suspended armament

The JA37D can be outfitted with the following ordnance 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

Custom loadout options

	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

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
• Got Lead indicator to help aim and shoot down your targets whit the stealth rounds

Cons:

• No tracer rounds making it hard to hit enemy aircraft without prior practice
• Very limited ammo supply with only 150 rounds with no tracer belt options
• 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

See also

• SAAB 37 Viggen (Family)

External links

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

Swedish Aeroplane Company Ltd. (SAAB)
	Pre-SAAB: SA / ASJA
SA 'Jaktfalken'	J6B
SAAB 17	B17A · B17B · S17BS
SAAB 18	B18A · B18B · T18B · T18B (57)
SAAB 21	J21A-1 · J21A-2 · A21A-3 · J21RA · A21RB
SAAB 29 'Tunnan'	J29A · A29B · J29D · J29F
SAAB 32 'Lansen'	J32B · A32A · A32A Röd Adam
SAAB 35 'Draken'	J35A · J35D
SAAB 37 'Viggen'	JA37C · JA37D · JA37DI · JA37DI F21 · AJ37 · AJS37
SAAB 39 'Gripen'	JAS39A · JAS39C
SAAB 105	SK60B · SAAB-105G
License Production	B3C (Ju 86K)
Export	SAAB-105OE · J35XS · ▄JAS39C · ◔JAS39EBS HU C

Sweden jet aircraft
Fighters	J21RA
	J29A · A29B · J29D · J29F
	J32B
	J34
	J35A · J35D
	JA37C · JA37D · JA37DI · JA37DI F21
	JAS39A · JAS39C
Strike aircraft	A21RB
	A32A · A32A Röd Adam
	A28B
	AJ37 · AJS37
	SK60B · SAAB-105G
Export	SAAB-105OE
Finland	▄Vampire FB 52A · ▄MiG-21bis · Saab J35XS