J21RA

This page is about the Swedish jet fighter J21RA. For other versions, see J21 (Family).

J21RA

J21A-2

J29A

360://https://wiki.warthunder.com/images/c/c9/Cockpit_saab_j21ra.jpg

J21RA

J21A-2

J29A

Sweden

V Rank

Battle rating:

AB	RB	SB
6.7	6.7	6.7

Class:

Fighter

Jet fighter

Research:82 000

Purchase:240 000

Show in game

Description

The J21RA is a rank V Swedish jet fighter with a battle rating of 6.7 (AB/RB/SB). It was introduced in Update 1.95 "Northern Wind".

General info

Flight performance

Air brakes

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

Max speed

at 4 000 m799 km/h

Turn time24 s

Max altitude12 192 m

EngineSvenska Flygmotor RM1

TypeJet

Cooling systemAir

Take-off weight5 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	763	744	12192	25.1	25.9	18.0	17.3	850
Upgraded	836	799		23.0	24.0	24.4	21.0

Details

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

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
787	360	437	408	260	~11	~5

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 450	< 390	< 420	N/A

Engine performance

Engine			Aircraft mass
Engine name		Number	Empty mass		Wing loading (full fuel)
Svenska Flygmotor RM1		1	3,420 kg		188 kg/m2
Engine characteristics			Mass with fuel (no weapons load)			Max Takeoff Weight
Weight (each)	Type		6m fuel	20m fuel	22m fuel
705 kg	Centrifugal-flow turbojet		3,654 kg	4,107 kg	4,172 kg	5,000 kg
Maximum engine thrust @ 0 m (RB / SB)			Thrust to weight ratio @ 0 m (100%)
Condition	100%	WEP	6m fuel	20m fuel	22m fuel	MTOW
Stationary	1,290 kgf	N/A	0.35	0.31	0.31	0.26
Optimal	1,290 kgf (0 km/h)	N/A	0.35	0.31	0.31	0.26

Survivability and armour

Protective components found in the J21RA.

Crew1 person

Speed of destruction

Structural787 km/h

Gear360 km/h

• 10 mm steel - Firewall armour plate
• 10 mm steel - Firewall cover armour plate
• 10 mm steel - Pilot's back armour plate
• 60 mm bulletproof glass

Modifications and economy

Repair costBasic → Reference

AB3 132 → 4 588

RB7 531 → 11 032

SB11 412 → 16 718

Total cost of modifications71 100

116 800

Talisman cost1 900

Crew training68 000

Experts240 000

Aces1 400

Research Aces620 000

Reward for battleAB / RB / SB

120 / 270 / 600 %

184 / 184 / 184 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Research: 7 100 Cost: 12 000 380 Compressor Research: 4 000 Cost: 6 500 210 New boosters Research: 4 000 Cost: 6 500 210 Wings repair Research: 5 900 Cost: 9 600 310 Engine Research: 5 900 Cost: 9 600 310 G-suit Research: 5 800 Cost: 9 500 310	Airframe Research: 4 000 Cost: 6 500 210 EFS Research: 5 800 Cost: 9 500 310 Cover Research: 5 800 Cost: 9 500 310	akan_m47_belt_pack Research: 7 100 Cost: 12 000 380 bmg50_belt_pack Research: 4 000 Cost: 6 500 210 akan_m47_new_gun Research: 5 900 Cost: 9 600 310 bmg50_new_gun Research: 5 800 Cost: 9 500 310

Armaments

Offensive armament

Weapon 120 mm Akan m/45 cannon

Ammunition140 rounds

Fire rate725 shots/min

Weapon 24 x 12.7 mm Akan m/39A machine gun

Ammunition1 350 rounds

Fire rate768 shots/min

The J21RA is armed with:

• 1 x 20 mm Akan m/45 cannon, nose-mounted (140 rpg)
• 2 x 12.7 mm Akan m/39A machine guns, nose-mounted (350 rpg = 750 total)
• 2 x 12.7 mm Akan m/39A machine guns, wing-mounted (325 rpg = 650 total)

Usage in battles

One way to operate this aircraft is to zoom climb up to about 2.5k-3k meters and then drop on a low and slow jet. Staying on someones tail is very easy with this plane and its defensive flying is quite effective.

Pros and cons

Pros:

• Good turn rate compared to other jets
• Decent armament
• Good low-speed performance when utilising flaps

Cons:

• Slow for a jet
• Climb might be the worst in comparison to others in its battle rating
• Bad energy retention

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

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the series of the aircraft;
• links to approximate analogues of other nations and research trees.

External links

• Official data sheet - more details about the performance

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