J-4

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Rank VI USSR + Premium + Golden Eagles
SU-7BMK Pack
This page is about the Soviet-built Chinese jet fighter J-4. For other versions, see MiG-17 (Family).
J-4
mig-17_china.png
GarageImage J-4.jpg
J-4
AB RB SB
9.0 9.0 9.0
Research:150 000 Specs-Card-Exp.png
Purchase:420 000 Specs-Card-Lion.png
Show in game

Description

The J-4 is a rank V Chinese jet fighter with a battle rating of 9.0 (AB/RB/SB). It was introduced in Update 1.91 "Night Vision". It is a Chinese version of the MiG-17 and performs identically to it.

General info

Flight performance

Air brakes
Allows you to dramatically reduce the flight speed by releasing special flaps
Max speed
at 2 000 m1 114 km/h
Turn time21 s
Max altitude15 500 m
EngineKlimov VK-1
TypeJet
Cooling systemAir
Take-off weight5 t
Characteristics Max Speed
(km/h at 2,000 m)
Max altitude
(metres)
Turn time
(seconds)
Rate of climb
(metres/second)
Take-off run
(metres)
AB RB AB RB AB RB
Stock 1,091 1,061 15500 22.2 23.2 41.2 39.1 475
Upgraded 1,128 1,114 21.2 21.5 59.9 50.0

Details

Features
Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear Drogue chute
X X X
Limits
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
1150 450 N/A 598 450 ~12 ~5
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 600 < 700 < 750 N/A

Engine performance

Engine Aircraft mass
Engine name Number Basic mass Wing loading (full fuel)
Klimov VK-1 1 3,958 kg 227 kg/m2
Engine characteristics Mass with fuel (no weapons load) Max Takeoff
Weight
Weight (each) Type 8m fuel 20m fuel 29m fuel
872 kg Centrifugal-flow turbojet 4,310 kg 4,755 kg 5,130 kg 5,485 kg
Maximum engine thrust @ 0 m (RB/SB) Thrust to weight ratio @ 0 m (100%)
Condition 100% WEP 8m fuel 20m fuel 29m fuel MTOW
Stationary 2,450 kgf N/A 0.57 0.52 0.48 0.45
Optimal 2,450 kgf
(0 km/h)
N/A 0.57 0.52 0.48 0.45

Survivability and armour

Crew1 person
Speed of destruction
Structural1 150 km/h
Gear450 km/h
  • 60 mm Bulletproof glass in cockpit front.
  • 16 mm Steel plates behind the pilot.
  • 10 mm Steel plate in the nose.

Modifications and economy

Repair costBasic → Reference
AB5 200 → 7 170 Sl icon.png
RB17 000 → 23 442 Sl icon.png
SB41 940 → 57 835 Sl icon.png
Total cost of modifications134 200 Rp icon.png
213 000 Sl icon.png
Talisman cost2 300 Ge icon.png
Crew training120 000 Sl icon.png
Experts420 000 Sl icon.png
Aces2 000 Ge icon.png
Research Aces830 000 Rp icon.png
Reward for battleAB / RB / SB
110 / 380 / 320 % Sl icon.png
208 / 208 / 208 % Rp icon.png
Modifications
Flight performance Survivability Weaponry
Mods aerodinamic fuse.png
Fuselage repair
Research:
6 700 Rp icon.png
Cost:
11 000 Sl icon.png
290 Ge icon.png
Mods jet compressor.png
Compressor
Research:
6 700 Rp icon.png
Cost:
11 000 Sl icon.png
290 Ge icon.png
Mods booster.png
New boosters
Research:
7 600 Rp icon.png
Cost:
12 000 Sl icon.png
330 Ge icon.png
Mods aerodinamic wing.png
Wings repair
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
480 Ge icon.png
Mods g suit.png
G-suit
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
380 Ge icon.png
Mods jet engine.png
Engine
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
380 Ge icon.png
Mods armor frame.png
Airframe
Research:
7 600 Rp icon.png
Cost:
12 000 Sl icon.png
330 Ge icon.png
Mods armor cover.png
Cover
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
380 Ge icon.png
Mods ammo.png
ns23_belt_pack
Research:
6 700 Rp icon.png
Cost:
11 000 Sl icon.png
290 Ge icon.png
Mod arrow 1.png
Mods pilon bomb.png
BD-2-48
Research:
6 700 Rp icon.png
Cost:
11 000 Sl icon.png
290 Ge icon.png
Mod arrow 0.png
Mods ammo.png
ns37_belt_pack
Research:
7 600 Rp icon.png
Cost:
12 000 Sl icon.png
330 Ge icon.png
Mod arrow 1.png
Mods pilon block rocket.png
S-5K
Research:
7 600 Rp icon.png
Cost:
12 000 Sl icon.png
330 Ge icon.png
Mod arrow 0.png
Mods weapon.png
ns23_new_gun
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
480 Ge icon.png
Mods pilon block rocket.png
S-5M
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
480 Ge icon.png
Mod arrow 0.png
Mods weapon.png
n37_new_gun
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
380 Ge icon.png
Mods pilon rocket.png
S-21
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
380 Ge icon.png

Armaments

Offensive armament

Ammunition40 rounds
Fire rate400 shots/min
Weapon 22 x 23 mm NR-23 cannon
Ammunition160 rounds
Fire rate900 shots/min

The J-4 is armed with:

  • 1 x 37 mm N-37D cannon, chin-mounted (40 rpg)
  • 2 x 23 mm NR-23 cannons, chin-mounted (80 rpg = 160 total)

Suspended armament

Number of setups4
List of setups
Setup 12 x 250 kg OFAB-250sv bomb
Setup 216 x S-5K rockets
Setup 316 x S-5M rockets
Setup 42 x S-21 rockets
Main articles: OFAB-250sv (250 kg), S-5K, S-5M, S-21

The J-4 can be outfitted with the following ordnance:

  • Without load
  • 2 x 250 kg OFAB-250sv bombs (500 kg total)
  • 16 x S-5K rockets
  • 16 x S-5M rockets
  • 2 x S-21 rockets

Usage in battles

The newly gained top speed performance and manoeuvrability come at a hefty price. Turn rate and low speed flexibility are reduced, due the stronger swept wing design and weight gain.

Acceleration also takes a hit, especially on take-off the predecessor will rush ahead.

As some positive characteristics traits of the MiG-15 vanish, some negative aspects also vanish. The newly designed tail enables far better control close to Mach 0.8 (it still lacks a flying tail though) and the roll rate also significantly improved. Manual limitation set the airframe at positive 8G, with the increased control the likelihood of over stressing your airframe is easy and a steady hand required in evasive manoeuvres.

Pros and cons

Pros:

  • Incredibly fast in a dive.
  • Excellent climb speed, almost same as the J-2
  • Very good manoeuvrability at low to medium speeds, also better manoeuvrability than its predecessor at high speed
  • Excellent energy retention, but if you turn too hard, expect to lose a few hundred km/h
  • Can safely reach a speed of 1,150 km/h when diving
  • Unless rolling and pulling up at the same time, it's hard to break your wings in turn
  • Similarities with the J-2 means the play style between the two are quite similar

Cons:

  • Roll rate is not very good
  • Guns are hard to aim and lead due to their relatively low muzzle velocity; small ammo capacity
  • Different trajectory performances between 23 mm and 37 mm; requires experience and practice to use the weapons
  • Guns tend to spark a lot (the N-37 in particular), especially with stock belts
  • Poor acceleration between 800 - 1,100 km/h
  • Doesn't do well in uptiers due to lack of air-to-air missiles, afterburner and radar
  • Engine easily overheats, throttle management necessary
  • Poor forward visibility in simulator, as a large canopy frame and the gunsight block the top and bottom

History

The usage of the designation J-4 is unclear, though most western observers claim it was applied to either the MiG-15 or MiG-17. One theory suggested that J-4 was the Chinese designation of the MiG-15bis, though this was later debunked when it was found that the J-2 was in fact a 15bis model. The most likely theory (and the one followed in-game) is that the designation was applied to imported Soviet-built MiG-17As, while license-built MiG-17Fs were designated Shenyang J-5 (F-5).

The MiG-17 was purchased and used by the PLAAF during the early Cold War era. It saw service alongside the MiG-15 during the Second Taiwan Strait Crisis, fighting against the ROCAF's F-86 Sabres. The two air forces were matched fairly evenly in terms of aircraft, perhaps with performance advantage going to the MiG-17s over the Sabres, but during the course of the conflict the Sabres were upgraded to use the AIM-9 Sidewinder air-to-air missile. This new weapon was used successfully to shoot down numerous Communist aircraft, starting its first combat experience on a good note. However, in late September 1958, a dud Sidewinder lodged itself in a MiG-17, which returned to base. The missile was successfully removed and eventually sent to the Soviet Union for reverse engineering. The result of this would be the very similar Vympel K-13 missile, entering service as the R-3S in 1962. The PLAAF would also license produce the K-13 as the PL-2 some years later, bringing the Sidewinder into service on the other side of the Taiwan Strait.

Information is sparse on the fate of the MiG-17 afterwards. They were most likely supplanted by the domestically produced Shenyang J-5 version and eventually phased out of service upon the introduction of sufficient quantities of the superior MiG-19/J-6 and J-7.

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


Shenyang Aircraft Corporation 中航工业沈阳飞机工业(集团)有限公司
Jet Fighters 
MiG-15  J-2*
MiG-17  J-4* · Shenyang F-5*
MiG-19  J-6A*
  *Licensed
See Also  Mikoyan-Gurevich Design Bureau

China jet aircraft
Fighters  J-2 · J-4 · Shenyang F-5 · J-6A · J-7II · J-7E
Strike aircraft  Q-5 early · Q-5A · A-5C
Bombers  H-5
American  ␗F-84G-21-RE · ␗F-86F-30 · ␗F-86F-40 · ␗F-100A · ␗F-104A · ␗F-104G · ␗F-5A
Soviet  ␗MiG-9 · ␗MiG-9 (l)