G.91 R/4 (Germany)

◄G.91 R/4

◄G.91 R/4

Germany

V Rank

Battle rating:

AB	RB	SB
8.3	8.7	9.0

Class:

PREMIUM

Fighter

Jet fighter

Purchase:8 910

STORE

Description

The ◄G.91 R/4 is a premium rank V German jet fighter with a battle rating of 8.3 (AB), 8.7 (RB), and 9.0 (SB). It was introduced as a premium pack in Update "Starfighters".

The R/4 is a variant of the G.91 jet fighter that has been modified for ground attack, allowing it access to a competitive selection of air-to-ground ordnance such as bombs, rockets, and high-explosive air-to-ground missiles. The R/4 also has the option to equip two different types of air-to-air missiles; the IR-tracking AIM-9B Sidewinder missile, or the command-guided AA-20 Nord missile.

The G.91 R/4 is a very nimble fighter with relatively average top speed and fairly good acceleration. Best played as a support fighter, the G.91 R/4 can use its incredible roll and turn rates to quickly get guns on target, as well as to dodge the typically less manoeuvrable fighters that it shares its battle ratings with.

The main difference between the R/3 and the R/4 is the armament choice. While the former has more powerful canons, it lacks the capability to mount air-to-air missiles while the later is the opposite, weaker machine guns but it is able to use air-to-air missiles.

General info

Flight performance

Air brakes

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

Drogue parachute

Reduces braking distance when landing on any runway

Max speed

at 0 m1 084 km/h

Turn time26 s

Max altitude11 000 m

EngineBristol Orpheus MK.803

TypeJet

Cooling systemAir

Take-off weight6 t

The G.91 was intended to replace the F-86A Sabre in German, Portuguese and Italian service and it shows. With an empty weight of only 3,100 kg (6,800 lbs) and a takeoff weight of 5,500 kg (12,100 lbs) the Gina is in the weight class as the P-51D and MiG-9, yet severely lighter than most other jets and losing about one and a half tonnes compared to the Sabre A.

Although only outputting a meagre 22 kN of thrust, this first look disadvantage is literally outweighed by the high thrust to weight ratio of 0.73 empty (0.41 full). This makes the Gina an excellent dogfighter as jet fighters maintain both their top speed, climb and sustained turn-rate by their engine power rather than other flight characteristics. It can easily reach its own terminal speed (1,011 km/h, 921 ft/s) and self-destruct in level flight.

Lacking in straight wings and leading wing slats, the stall speed for the G.91 is higher than the low weight leads one to assume. One should hence be wary of many older jet types with said features, as after bleeding too much speed they can easily out-manoeuvre the Gina.

Starting with 20 min of fuel, gaining the climb speed of 800 km/h IAS (sustainable @ 7-8°; 730 ft/s) takes a mere ~80 seconds with 20 predicated for taking off at 230 km/h or 210 ft/s IAS. An Immelmann at 800 km/h will gain 1000 m and lose 300 km/h. A hard 180° turn at the same speed takes >100 km/h and may lose up to 60 m.

Characteristics	Max Speed (km/h at 0 m - sea level)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	1,066	1,042	11000	27.4	28.0	30.4	29.5	850
Upgraded	1,097	1,084		24.7	26.0	48.8	39.0

Details

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

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
1128	345	589	550	345	~11	~5

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 800	< 650	< 660	N/A

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 800	< 650	< 660	N/A

Engine performance

Engine			Aircraft mass
Engine name		Number	Empty mass		Wing loading (full fuel)
Bristol Orpheus MK.803		1	3,477 kg		289 kg/m2
Engine characteristics			Mass with fuel (no weapons load)				Max Takeoff Weight
Weight (each)	Type		9m fuel	20m fuel	30m fuel	32m fuel
380 kg	Axial-flow turbojet		3,837 kg	4,269 kg	4,662 kg	4,740 kg	5,800 kg
Maximum engine thrust @ 0 m (RB / SB)			Thrust to weight ratio @ 0 m (101%)
Condition	100%	101%	9m fuel	20m fuel	30m fuel	32m fuel	MTOW
Stationary	2,212 kgf	2,234 kgf	0.58	0.52	0.48	0.47	0.39
Optimal	2,212 kgf (0 km/h)	2,234 kgf (0 km/h)	0.58	0.52	0.48	0.47	0.39

Survivability and armour

Crew1 person

Speed of destruction

Structural1 128 km/h

Gear345 km/h

• 40 mm Bulletproof glass in front of the pilot
• 6.5 mm Steel plate, starts in the pilot's seat, goes below the pilot, ends in front of the pilot
• 6.5 mm Steel plate below a fuel tank in the centre-front of the fuselage
• 6.5 mm Steel plate below a fuel tank in the centre-rear of the fuselage

Though the G.91 R/4 does have a decent amount of armour spaced out between the centre and front of the fuselage, the steel plates will only be sufficient to protect the pilot and aircraft from lower calibre fire (7.92 mm to 7.62 mm machine guns will only penetrate at very close ranges). And, thanks to the sacrifices made to lighten the aircraft, the airframe is not particularly reinforced. The wings are very thin, and susceptible to being out-right broken off by most-all primary armaments the G.91 will face at its tier, and the fuselage is full of juicy fuel tanks as well as the single engine of the R/4. Even more so than most planes, the G.91 R/4 is not capable of taking any hits. Even low calibre fire, such as that from .50 calibre machine guns, can cripple an R/4 nigh-immediately, and necessitate an immediate return-to-base.

Modifications and economy

Repair cost

AB2 477

RB5 511

SB7 794

Crew training10 000

Experts620 000

Aces2 000

Research Aces1 760 000

Reward for battleAB / RB / SB

2 × 130 / 380 / 600 %

2 × 220 / 220 / 220 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Compressor Airframe New boosters Wings repair G-suit Cover Engine		bmg50_belt_pack FFAR Mighty Mouse 559G1 Nord AA.20 SBC-17 bmg50_new_gun Nord AS.20 AIM-9B

Armaments

Suspended armament

The G.91 R/4 (Germany) can be outfitted with the following ordnance:

• 4 x 12.7 mm M3 Browning machine guns, nose-mounted (300 rpg = 1,200 total)
• 4 x 12.7 mm M3 Browning machine guns + 38 x FFAR Mighty Mouse rockets
• 4 x 12.7 mm M3 Browning machine guns + 2 x AA-20 Nord missiles
• 4 x 12.7 mm M3 Browning machine guns + 2 x AS-20 Nord missiles
• 2 x 12.7 mm M3 Browning machine guns + 4 x AS-20 Nord missiles
• 2 x 12.7 mm M3 Browning machine guns + 4 x AA-20 Nord missiles
• 2 x 12.7 mm M3 Browning machine guns + 2 x 500 lb AN-M64A1 bombs + 2 x AS-20 Nord missiles (1,000 lb total)
• 2 x 12.7 mm M3 Browning machine guns + 2 x 500 lb AN-M64A1 bombs + 2 x AA-20 Nord missiles (1,000 lb total)
• 4 x 12.7 mm M3 Browning machine guns + 4 x AIM-9B Sidewinder missiles
• 4 x 12.7 mm M3 Browning machine guns + 2 x 500 lb AN-M64A1 bombs (1,000 lb total)

Featuring a wide range of ordnance the G.91 R/3 can be equipped for any role from ground to air combat, though it prefers air superiority.

The M3 Browning is a new weapon in the German arsenal at rank V and compared to the previous experiences a let down. The rate of fire is phenomenal, but the small calibre and ammo size put a serious damper to the mood, that is in comparison of course. In practise and with good aim, it can easily shred four fighters. The high bullet velocity and fire rate is quite the advantage in the fast pace world of jet combat, ensuring hits in deflection shots were the lower rate of fire found in the Soviet jet fighters might have failed the pilot.

Yet one will always look onto greener pastures, especially as the Gina only has four guns unlike all other Browning armed jets. No matter how you turn it, the armament is only manageable with skill and outright bad for a beginner.

For air-to-ground purposes, the G.91 R/4 is similar to the G.91 R/3 in loadout options, sharing the same FFAR Mighty Mouse rocket option as well as the choice of a pair of 500 lb bombs. However, the G.91 R/4 must sacrifice half of its machine guns to carry 4 x AS-20 Nord air-to-ground missiles, unlike its predecessor which retains both its 30 mm cannons.

Air-to-air ordnance selection is where the G.91 R/4 stands out from its brethren; the G.91 R/4 is one of only two jets in-game (alongside the Super Mystére B.2) to have the option of loading the unique AA-20 Nord air-to-air missiles; keyboard guided missiles with a 15 metre proximity fuse. Unlike infrared-guided missiles in War Thunder, the AA-20 Nords do not warn targets of a missile launch giving R/4 pilots the element of surprise, and the Nord's proximity fuse increases the chance of long-range launches striking a target as well as successful head-ons, though these perks come at the demand of a much higher skill floor for usage.

Usage in battles

Due to the G.91 R/4's notably lower speed and high-end acceleration as compared to its contemporaries, the R/4 should be played as a support fighter; meaning the pilot should seek to stick near teammates rather than hunting targets solo, and opt to pick off hostile aircraft that are engaged and distracted with/by allied fighters. The G.91 airframe is exceptionally agile, and the R/4 is no exception; even heavily manoeuvring targets are easy for this plane to keep the nose on. The plane's exceptional roll and turn rates are its biggest strengths, and the pilot should seek to use that to their advantage rather than attempting to fight speed or energy battles.

Make use of the G.91 R/4's varied suspended armaments to dispatch a variety of targets. The AIM-9B is very easy to use missile and can force faster targets to manoeuvre, slowing them down, and can sometimes even net target destructions. Be careful when using this missile around friendlies though, as a misguided Sidewinder will destroy allied aircraft. The AA-20 Nord is a much more difficult missile to use, but it has a far longer effective range and can often surprise enemies who expect a warning from enemy missile launches. Use the massive range and proximity fuse to take down faster targets flying away from you, and consider using them to destroy bombers such as the often-seen Vautour IIB, Vautour IIA, and Israeli Vautour IIA, who not only are far less able to dodge missiles but also have larger airframes that trigger the proximity fuse from longer distances.

Pros and cons

Pros:

• Exceptional manoeuvrability, with very high roll and turn rates
• Varied and effective suspended armament choices
• Access to air-to-air missiles, including the AA-20 Nord
• Access to the AS-20 Nord air-to-ground missile
• Access to 4 x AS-20 Nord like its predecessor

Cons:

• Relatively low calibre primary armament (four .50 cal Brownings)
• Slower than most of its contemporaries
• Very fragile airframe
• Poor energy retention

History

The G.91 R/3 was the primary West German variant of the Fiat-made light fighter, with 50 built in Italy and another 294 under license in West Germany. It had more powerful armament, added two wing hardpoints, and improved avionics compared to the Italian G.91 R-1s. The 50 R/4 that followed were identical to the R/3 other than in terms of armament. The R/4 supposed to have been sold to Greece and Turkey, but after that sale fell through they entered West German service instead.

Media

"G.91 R/4 "Portuguese Devil" - Update 1.87 Premium" by BaconGaming

"G.91 R/4 - Like A Cold Pizza" by NapalmRatte

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

Paste links to sources and external resources, such as:

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

Fiat Aviation (Fiat Aviazione)
Fighters	CR.32 · CR.32 bis · CR.32 quater
	CR.42 · Marcolin's C.R.42 CN · ▀Marcolin's C.R.42 CN
	G.50 serie 2 · G.50 AS serie 7
	G.55 sottoserie 0 · G.55 serie 1 · G.55S
	G.56
Jet fighters	G.91 pre-serie · G.91 R/1 · G.91 Y · G.91 YS
	▄F-86K*
	▄F-104G* · F-104S* · F-104S.ASA* · ▄F-104S TAF*
Strike aircraft	F.C.20 Bis
Bombers	B.R.20DR · B.R.20M M1
Export/Captured	J11 · ▀CR.42
	▀G.50 serie 2 · ▀G.50 AS serie 7
	◄G.91 R/3 · ◄G.91 R/4 · G.91 R/4
	*Licensed
See also	North American Aviation · Lockheed Martin