G.91 YS
| This page is about the Italian jet fighter G.91 YS. For other versions, see G.91 (Family). |
Contents
Description
The G.91 YS is a rank VI Italian jet fighter with a battle rating of 9.7 (AB/SB) and 9.3 (RB). It was introduced in Update 1.87 "Locked On".
The G.91 YS is a multi-role fighter which first debuted in 1966. Based largely on earlier Fiat G.91 fighters, the G.91 YS was a complete redesign but kept the basic shape of the G.91 series. The biggest difference between the two types was the conversion from a single-engine to two General Electric J85 turbojets outfitted with afterburners. This conversion alone resulted in a 60% increase in the aircraft's thrust, however, it was not enough for this jet to become supersonic even when in a dive.
In similar fashion to the earlier French fighter, the Super Mystere B2, the G.91 YS was outfitted with dual 30 mm DEFA autocannons in the cheeks of the forward fuselage. Also in the same vein, the G.91 YS was built to be a multi-role fighter as a fighter-interceptor or a fighter-bomber. Due to the increased power of the dual engines, this fighter when acting in a bomber role has the ability to carry up to 4,000 lbs of bombs, though configurations as low as 1,000 lbs is available. FFAR Mighty Mouse unguided rockets are another good option for taking out softer ground targets in which the larger 500 – 1,000 lb bombs would otherwise be overkill.
The G.91 YS while lacking in the supersonic flight department is a feisty little fellow which can still hold its own in an air-to-air combat role. The dual autocannons can make quick work of any head-on attacks provided the pilot gets out of the way of incoming bullets in return. AIM-9B Sidewinder missiles prove themselves very effective especially against slower targets such as bombers and helicopters but are a bit more difficult to achieve success against other fighters due to their ability to pull high-G manoeuvres and break the missile lock and avoid them.
The pilot has the option to change up the load-out of the aircraft due to the map he finds himself on and what they are comfortable with. Air-to-air and ground-attack options are both viable and can help change the tide of the battle by loading up on what the team needs more.
General info
Flight performance
The G.91 YS is a very good Boom & Zoom fighter, the only issue is confronting other jets with afterburner capabilities which make your Boom & Zoom attempt more difficult. The YS has a lower turn speed than the other G.91s (swapped for acceleration and a little bit more speed) it is also two high power engines, making it possible to return to base on one engine or even fight like that if you want. Sadly the G.91 isn't supersonic but it can get close in a steep dive, making it one of the best trans-sonic jets!
| 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 | 1,114 | 1,109 | 12500 | 29.5 | 30.7 | 60.4 | 54.6 | 750 |
| Upgraded | 1,131 | 1,123 | 28.6 | 29.0 | 91.8 | 75.0 | ||
Details
| Features | |||||
|---|---|---|---|---|---|
| Combat flaps | Take-off flaps | Landing flaps | Air brakes | Arrestor gear | Drogue chute |
| ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Limits | ||||||
|---|---|---|---|---|---|---|
| Wings (km/h) | Gear (km/h) | Flaps (km/h) | Max Static G | |||
| Combat | Take-off | Landing | + | - | ||
| 1128 | 371 | 592 | 556 | 371 | ~11 | ~4 |
| 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) | |||||
| General Electric J85-GE-13A | 2 | 4,350 kg | 380 kg/m2 | |||||
| Engine characteristics | Mass with fuel (no weapons load) | Max Takeoff Weight | ||||||
| Weight (each) | Type | 17m fuel | 20m fuel | 30m fuel | 45m fuel | 57m fuel | ||
| 271 kg | Afterburning axial-flow turbojet | 5,114 kg | 5,246 kg | 5,688 kg | 6,351 kg | 6,882 kg | 8,500 kg | |
| Maximum engine thrust @ 0 m (RB / SB) | Thrust to weight ratio @ 0 m (WEP) | |||||||
| Condition | 100% | WEP | 17m fuel | 20m fuel | 30m fuel | 45m fuel | 57m fuel | MTOW |
| Stationary | 1,230 kgf | 1,894 kgf | 0.74 | 0.72 | 0.67 | 0.60 | 0.55 | 0.45 |
| Optimal | 1,242 kgf (1,000 km/h) |
1,913 kgf (1,000 km/h) |
0.75 | 0.73 | 0.67 | 0.60 | 0.56 | 0.45 |
Survivability and armour
- 40 mm bulletproof glass in the canopy windshield (angled to provide about 94 mm of protection)
- 6.5 mm steel behind pilot's seat
Like many later generation jet fighters (those built in the 1960s-70s) the G.91 YS traded armour for greater ordnance carrying capacity. Though not without all armour, the canopy windshield has an effective thickness of 94 mm to protect the pilot in the event of a head-on attack. Though the 6.5 mm of steel behind the pilot's seat seem to be on the thin side, bullets coming in from that direction will need to pass through the engine first. If the pilot is going to be hit by bullets it will most likely be through side angle shots or from above.
Modifications and economy
| Flight performance | Survivability | Weaponry | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Armaments
| Ballistic Computer | |||
|---|---|---|---|
| CCIP (Guns) | CCIP (Rockets) | CCIP (Bombs) | CCRP (Bombs) |
 |
|
|
|
Offensive armament
The G.91 YS is armed with:
- 2 x 30 mm DEFA 552 cannons, nose-mounted (125 rpg = 250 total)
Suspended armament
The G.91 YS can be outfitted with the following ordnance presets:
- Without load
- 2 x 500 lb LDGP Mk 82 bombs (1,000 lb total)
- 4 x 500 lb LDGP Mk 82 bombs (2,000 lb total)
- 2 x 1,000 lb LDGP Mk 83 bombs (2,000 lb total)
- 4 x 1,000 lb LDGP Mk 83 bombs (4,000 lb total)
- 76 x FFAR Mighty Mouse rockets
- 16 x Zuni Mk32 Mod 0 ATAP rockets
- 2 x AIM-9B Sidewinder missiles
Custom loadout options
| 1 | 2 | 3 | 4 | 5 | 6 |  | |
|---|---|---|---|---|---|---|---|
| 500 lb LDGP Mk 82 bombs | 1 | 1 | 1 | 1 | |||
| 1,000 lb LDGP Mk 83 bombs | 1 | 1 | 1 | 1 | |||
| FFAR Mighty Mouse rockets | 19 | 19 | 19 | 19 | |||
| Zuni Mk32 Mod 0 ATAP rockets | 4 | 4 | 4 | 4 | |||
| AIM-9B Sidewinder missiles | 1 | 1 | |||||
| Maximum permissible weight imbalance: 800 kg | |||||||
Usage in battles
The G.91 YS has a lot of power and energy potential, keep that in mind before going into battle. To add to this fighters punch, it also utilises AIM 9B missiles and in capable hands, this fighter can be a monster on the battlefield. The YS also has the capability of mounting 76 x FFAR Mighty Mouse rockets which provide the potential of low-altitude Boom & Zooming on trucks, anti-aircraft artillery, light tanks and even enemy fighters attempting an airfield capture, though this does not come without a cost. When dropping in low on ground targets, the fighter sacrifices its speed and manoeuvrability for that ordnance. The YS also can outfit a few bombs so the YS can then be used as a base bomber following up by attacking enemy fighters, but even still it isn't always reliable and can be easily intercepted from any other supersonic fighter jets patrolling the area.
Your biggest threats will be F-4Cs, MiG-19S/PT, F-100D, Mitsubishi T2, J-6A, J-7II, Hunter F.6, mainly because they have superior speed and ordnance. The Hunter is probably the best-matched jet to the G.91 YS. The only top tier jet which should not be too much of a pain is the Super Mystere B2, and F-86K because they have limited speed and slow acceleration compared and will never win in a vertical climb against the G.91 YS.
Pros and cons
Pros:
- Excellent acceleration and roll speed
- Able to carry air-to-air missiles
- Wide variety of payload options
- High rate of climb
- Deadly main armament
- Drag chute helps slow you down very quickly during landings
Cons:
- Slower than most planes it will face
- Limited ammo
- Slower turn rate compared to earlier G.91s
- Flaps and landing gear are prone to ripping off
- New booster module is a must to research in order to avoid crashing during a very fast and low-level dive
- AIM-9Bs have a poorer performance other air-to-air missiles at this BR
History
During the 1960s, Fiat began developing a successor to their previous G.91 fighter, which had thus far managed to obtain a favourable reputation with its operators. Fiat based their new aircraft heavily on the two-seat trainer version of the G.91 and decided outfit the aircraft with two General Electric J85 afterburning engines contrary to the preceding single-engine G.91.
Additionally, the aircraft's fuselage and wings were enlarged to accommodate 3 more fuel tanks (for a total capacity of 3200 liters), bigger powerplant and improve handling characteristics, while a slew of other tweaks and upgrades further enhanced the aircraft's overall design, including an automatic slat on the wing's leading edge. The new G.91Y performed its maiden flight in December 1966. Testing revealed minor aerodynamic issues which would be resolved on subsequent production aircraft with only minor redesigns. At high altitude extreme manoeuvres at high angles of attack could lead to engines flame-out.
Production of the G.91Y began with an initial order for 20 pre-production machines, following the manufacturing of two prototypes. This order would eventually go up to 75 aircraft, although only 67 including the initial prototypes were delivered in the end. By the mid 1970s, all outstanding orders for the G.91Y were fulfilled and production had ceased for this variant.
The G.91Y served exclusively with Italian squadrons up until the early 1990s, before being replaced by a more modern counterpart.
The G.91YS was a single prototype conversion of the G.91Y, which followed a requirement issued by the Swiss Air Force. The aircraft allowed installation of American Sidewinder air-to-air missiles (adding 2 more sub-wing pylons) and a Swedish weapons control system. This special prototype first flew in October 1970, but was eventually not accepted into service by the Swiss. The prototype was converted back into service as a regular G.91Y.
- From Devblog
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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
| 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 |
| Italy jet aircraft | |
|---|---|
| Aerfer | Sagittario 2 · Ariete |
| Fiat | G.91 pre-serie · G.91 R/1 · G.91 R/4 (Portugal) · G.91 Y · G.91 YS |
| AMX International | AMX · AMX A-1A (Brazil) |
| Panavia | Tornado ADV · ▄Tornado IDS · ▄Tornado IDS (1995) |
| Foreign: | |
| Vampire | Vampire FB 52A |
| F-84 | ▄F-84F · ▄F-84G-21-RE |
| F-86 | CL-13 Mk.4 · ▄F-86K |
| F-104 | ▄F-104G · F-104S · ▄F-104S TAF (Turkey) · F-104S.ASA |
| F-16 | ▄F-16A ADF |
| AV-8 | ▄AV-8B Plus |
| Hungary | |
| Mikoyan-Gurevich | ◔MiG-15bis · ◔MiG-17PF · ◔MiG-21MF · ◔MiG-21bis-SAU · ◔MiG-23MF · ◔MiG-29 |
| Ilyushin | ◔IL-28 |
| Sukhoi | ◔Su-22M3 |
| Saab | ◔JAS39EBS HU C |
