JA37D

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This page is about the Swedish jet fighter JA37D. For other versions, see SAAB 37 Viggen (Family).
JA37D
saab_ja37d.png
GarageImage JA37D.jpg
JA37D
AB RB SB
11.7 11.3 11.3
Research:400 000 Specs-Card-Exp.png
Purchase:1 080 000 Specs-Card-Lion.png
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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 Sl icon.png
RB7 875 → 12 363 Sl icon.png
SB8 971 → 14 084 Sl icon.png
Total cost of modifications306 000 Rp icon.png
470 000 Sl icon.png
Talisman cost3 100 Ge icon.png
Crew training310 000 Sl icon.png
Experts1 080 000 Sl icon.png
Aces3 400 Ge icon.png
Research Aces1 280 000 Rp icon.png
Reward for battleAB / RB / SB
100 / 320 / 540 % Sl icon.png
250 / 250 / 250 % Rp icon.png
Modifications
Flight performance Survivability Weaponry
Mods jet compressor.png
Compressor
Research:
15 000 Rp icon.png
Cost:
23 000 Sl icon.png
430 Ge icon.png
Mods booster.png
New boosters
Research:
14 000 Rp icon.png
Cost:
22 000 Sl icon.png
400 Ge icon.png
Mods jet engine.png
Engine
Research:
25 000 Rp icon.png
Cost:
38 000 Sl icon.png
710 Ge icon.png
Mods aerodinamic fuse.png
Fuselage repair
Research:
15 000 Rp icon.png
Cost:
23 000 Sl icon.png
430 Ge icon.png
Mods armor frame.png
Airframe
Research:
14 000 Rp icon.png
Cost:
22 000 Sl icon.png
400 Ge icon.png
Mods aerodinamic wing.png
Wings repair
Research:
19 000 Rp icon.png
Cost:
29 000 Sl icon.png
540 Ge icon.png
Mods armor cover.png
Cover
Research:
25 000 Rp icon.png
Cost:
38 000 Sl icon.png
710 Ge icon.png
Mods heli false thermal targets.png
Flares/Chaff
Research:
15 000 Rp icon.png
Cost:
23 000 Sl icon.png
430 Ge icon.png
Mod arrow 0.png
Mods ammo.png
akan_m75_belt_pack
Research:
15 000 Rp icon.png
Cost:
23 000 Sl icon.png
430 Ge icon.png
Mod arrow 1.png
Mods heli false thermal targets.png
Flares/Chaff
Research:
14 000 Rp icon.png
Cost:
22 000 Sl icon.png
400 Ge icon.png
Mods air to air missile.png
RB24J
Research:
14 000 Rp icon.png
Cost:
22 000 Sl icon.png
400 Ge icon.png
Mod arrow 0.png
Mods pilon block rocket.png
m/70
Research:
14 000 Rp icon.png
Cost:
22 000 Sl icon.png
400 Ge icon.png
Mods g suit.png
G-suit
Research:
19 000 Rp icon.png
Cost:
29 000 Sl icon.png
540 Ge icon.png
Mods weapon.png
akan_m75_new_gun
Research:
19 000 Rp icon.png
Cost:
29 000 Sl icon.png
540 Ge icon.png
Mods air to air missile.png
RB 74
Research:
19 000 Rp icon.png
Cost:
29 000 Sl icon.png
540 Ge icon.png
Mod arrow 0.png
Mods night vision device.png
NVD
Research:
25 000 Rp icon.png
Cost:
38 000 Sl icon.png
710 Ge icon.png
Mods air to air midrange missile.png
RB71
Research:
25 000 Rp icon.png
Cost:
38 000 Sl icon.png
710 Ge icon.png

Armaments

Ballistic Computer
CCIP (Guns) CCIP (Rockets) CCIP (Bombs) CCRP (Bombs) Lead indicator
alt={{{alt}}} alt={{{alt}}} alt={{{alt}}} alt={{{alt}}} alt={{{alt}}}

Offensive armament

Main article: Akan m/75 (30 mm)

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
Hardpoints JA37D.png
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".[1][2] This allowed it to serve until the late 2000s, before being completely replaced by the more advanced JAS 39 Gripen jet fighter.

Media

Skins
Images

See also

External links


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 · 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
  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