Difference between revisions of "J-4"

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Latest revision as of 12:38, 21 September 2023

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J-4

J-4

AB	RB	SB
9.0	8.7	9.0

Class:

Fighter

Jet fighter

Research:61 000

Purchase:340 000

Description

The J-4 (known in Chinese client as MiG-17 米格-17) represented the batches of MiG-17 brought from Soviet Union before they were locally produced as J-5 (歼-5). As part of the 156 Key Projects, Soviet Union confirmed to license MiG-17 to Factory 112 (SAC) in 1953; the complete technical drawings, 2 MiG-17, 15 CKD kits and parts for around 10 jets were then delivered to Mainland China in 1955. The first of these jets took off to the skies in 1956/7/19 as the first jet Mainland China has assembled and soon joined PLAAF with some victories over ROCAF during the heat of Taiwan Strait Crisis. While it soon became the very first prey of AIM-9B on 1958/9/24 with Wang Zizhong (王自重) becoming the very first victim of AAM in combat history, MiG-17 and J-5 still served PLAAF humbly for more than 4 decades before later jets like J-6/7/8 eventually replaced them alongside with the MiG-15bis still in PLAAF service. Some of these jets were also aided to North Korea, Viet Cong and Albania etc., with KPAAF being the only known user up to this date.

Introduced in Update 1.91 "Night Vision" alongside with the Chinese tech-tree, the "J-4" a Chinese version of the MiG-17 and performs identically to it. Although it looks very similar to MiG-15 series, the more powerful engine, extra pair of wing fence and higher swept angle for the wing gives away the identity of J-4; while the jet will be in trouble if enemy jets come with AAMs like AIM-9B or R-3S and players didn't aware of their existence, but having high situation awareness to the battlefield and utilizing the airframe at lower air speeds (the control column is not design for speeds above 900 km/h) in dogfights will make sure most enemy jets face their end rather soon with the devastating firepower onboard; alternatively taking J-4 as a makeshift attacker is viable but requires extensive trainings to get used to the characteristics of the ground-attacking armaments.

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)
Characteristics	AB	RB	Max altitude (metres)	AB	RB	AB	RB	Take-off run (metres)
Stock	1,091	1,061	15500	22.2	23.2	41.2	39.1	475
Upgraded	1,128	1,114	15500	21.2	21.5	59.9	50.0	475

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
Wings (km/h)	Gear (km/h)	Combat	Take-off	Landing	+	-
1,150	450	-	598	450	~12	~5

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 600	< 700	< 750	-

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	Max Takeoff Weight
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	-	0.57	0.52	0.48	0.45
Optimal	2,450 kgf (0 km/h)	-	0.57	0.52	0.48	0.45

Survivability and armour

Crew1 person

Speed of destruction

Structural0 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

AB2 726 → 4 056

RB8 118 → 12 079

SB8 861 → 13 185

Total cost of modifications101 700

164 000

Talisman cost2 200

Crew training98 000

Experts340 000

Aces1 800

Research Aces780 000

Reward for battleAB / RB / SB

120 / 380 / 600 %

202 / 202 / 202 %

Modifications

Flight performance

Survivability

Weaponry

Fuselage repair Research: 5 100 Cost: 8 200 300	Compressor Research: 5 100 Cost: 8 200 300
New boosters Research: 5 700 Cost: 9 100 330
Wings repair Research: 8 500 Cost: 14 000 490
G-suit Research: 5 500 Cost: 8 800 320	Engine Research: 5 500 Cost: 8 800 320

Airframe

Research:

5 700

Cost:

9 100

330

Cover

Research:

5 500

Cost:

8 800

320

ns23_belt_pack Research: 5 100 Cost: 8 200 300		D-4-50 Research: 5 100 Cost: 8 200 300
	ns37_belt_pack Research: 5 700 Cost: 9 100 330	S-5K Research: 5 700 Cost: 9 100 330
ns23_new_gun Research: 8 500 Cost: 14 000 490		S-5M Research: 8 500 Cost: 14 000 490
EFS Research: 5 500 Cost: 8 800 320	n37_new_gun Research: 5 500 Cost: 8 800 320	S-21 Research: 5 500 Cost: 8 800 320

Armaments

Offensive armament

Weapon 137 mm Type 37-1 cannon

Ammunition40 rounds

Fire rate400 shots/min

Weapon 22 x 23 mm Type 23-1 cannon

Ammunition160 rounds

Fire rate900 shots/min

Main articles: Type 37-1 (37 mm), Type 23-1 (23 mm)

The J-4 is armed with:

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

Suspended armament

List of setups (4)

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

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

Skins

Skins and camouflages for the J-4 from live.warthunder.com.

External links

Official data sheet - more details about the performance

*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*
MiG-19	J-6A*
J-8	J-8B · J-8F
Su-27 variants	J-11* · J-11A*
Export	Shenyang F-5*
	*Licensed Note: "J-2" and "J-4" are not official designations
See Also	Mikoyan-Gurevich Design Bureau

China jet aircraft
Fighters	J-2 · J-4 · J-6A · J-7II · J-7D · J-7E · J-8B · J-8F · J-10A · J-11 · J-11A
Strike aircraft	Q-5 early · Q-5A · Q-5L · JH-7A
Bombers	H-5
France	␗Mirage 2000-5Ei
USA	␗F-84G-21-RE · ␗F-84G-31-RE · ␗F-86F-30 · ␗F-86F-40 · ␗F-100A · ␗F-100F · ␗F-104A · ␗F-104G · ␗F-5A · ␗F-5E · ␗F-16A MLU
USSR	␗MiG-9 · ␗MiG-9 (l)
North Korea	Shenyang F-5
Pakistan	A-5C · JF-17

@@ Line 1: / Line 1: @@
 {{Specs-Card
 |code=mig-17_china
-|images={{Specs-Card-Image|}}
+|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
-}}
-{{About
-| about = Soviet-built Chinese jet fighter '''{{PAGENAME}}'''
-| usage = other versions
-| link = MiG-17 (Family)
 }}
 == Description ==
 <!-- ''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
-[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
+The '''{{Specs|name}}''' (known in Chinese client as MiG-17 米格-17) represented the batches of MiG-17 brought from Soviet Union before they were locally produced as J-5 (歼-5). As part of the 156 Key Projects, Soviet Union confirmed to license MiG-17 to Factory 112 (SAC) in 1953; the complete technical drawings, 2 MiG-17, 15 CKD kits and parts for around 10 jets were then delivered to Mainland China in 1955. The first of these jets took off to the skies in 1956/7/19 as the first jet Mainland China has assembled and soon joined PLAAF with some victories over ROCAF during the heat of Taiwan Strait Crisis. While it soon became the very first prey of AIM-9B on 1958/9/24 with Wang Zizhong (王自重) becoming the very first victim of AAM in combat history, MiG-17 and J-5 still served PLAAF humbly for more than 4 decades before later jets like J-6/7/8 eventually replaced them alongside with the MiG-15bis still in PLAAF service. Some of these jets were also aided to [[Shenyang F-5|North Korea]], Viet Cong and Albania etc., with KPAAF being the only known user up to this date.
-{{Break}}
-The '''{{Specs|name}}''' is a rank {{Specs|rank}} Chinese jet fighter {{Battle-rating}}. It was introduced in [[Update 1.91 "Night Vision"]]. It is a Chinese version of the [[MiG-17]] and performs identically to it.
+Introduced in [[Update 1.91 "Night Vision"]] alongside with the Chinese tech-tree, the "J-4" a Chinese version of the [[MiG-17]] and performs identically to it. Although it looks very similar to MiG-15 series, the more powerful engine, extra pair of wing fence and higher swept angle for the wing gives away the identity of J-4; while the jet will be in trouble if enemy jets come with AAMs like [[AIM-9B Sidewinder|AIM-9B]] or [[R-3S]] and players didn't aware of their existence, but having high situation awareness to the battlefield and utilizing the airframe at lower air speeds (the control column is not design for speeds above 900 km/h) in dogfights will make sure most enemy jets face their end rather soon with the devastating firepower onboard; alternatively taking J-4 as a makeshift attacker is viable but requires extensive trainings to get used to the characteristics of the ground-attacking armaments.
 == General info ==
@@ Line 60: / Line 55: @@
 ! Combat !! Take-off !! Landing !! + !! -
 |-
-| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || N/A || 650 || 450 || ~12 || ~5
+| 1,150 <!-- {{Specs|destruction|body}} --> || {{Specs|destruction|gear}} || - || 598 || 450 || ~12 || ~5
 |-
 |}
@@ Line 70: / Line 65: @@
 ! Ailerons !! Rudder !! Elevators !! Radiator
 |-
-| < 600 || < 700 || < 750 || N/A
+| < 600 || < 700 || < 750 || -
 |-
 |}
@@ Line 81: / Line 76: @@
 |-
 ! colspan="2" | Engine name || Number
-! colspan="2" | Empty mass || colspan="2" | Wing loading (full fuel)
+! colspan="2" | {{Annotation|Basic mass|Mass of the aircraft with pilot and engine oil, but no fuel or weapons load}} || colspan="2" | Wing loading (full fuel)
 |-
-| colspan="2" | Klimov VK-1 ||  1
+| colspan="2" | Klimov VK-1 || 1
-| colspan="2" | 3,868 kg || colspan="2" | 223 kg/m<sup>2</sup>
+| colspan="2" | 3,958 kg || colspan="2" | 227 kg/m<sup>2</sup>
 |-
 ! colspan="3" | Engine characteristics
-! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br />Weight
+! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br>Weight
 |-
 ! Weight (each) || colspan="2" | Type
-! 9m fuel || 20m fuel || 31m fuel
+! 8m fuel || 20m fuel || 29m fuel
 |-
-| 892 kg || colspan="2" | Centrifugal-flow turbojet
+| 872 kg || colspan="2" | Centrifugal-flow turbojet
-| 4,209 kg || 4,625 kg || 5,041 kg || 5,485 kg
+| 4,310 kg || 4,755 kg || 5,130 kg || 5,485 kg
 |-
-! colspan="3" | {{Annotation|Maximum engine thrust @ 0 m (RB / SB)|The maximum thrust produced by each engine, while mounted in the aircraft. NOTE: Thrust varies significantly depending on speed & altitude.}}
+! colspan="3" | {{Annotation|Maximum engine thrust @ 0 m (RB/SB)|The maximum thrust produced by each engine, while mounted in the aircraft. NOTE: Thrust varies significantly depending on speed & altitude.}}
 ! colspan="4" | Thrust to weight ratio @ 0 m (100%)
 |-
 ! Condition || 100% || WEP
-! 9m fuel || 20m fuel || 31m fuel || MTOW
+! 8m fuel || 20m fuel || 29m fuel || MTOW
 |-
-| ''Stationary'' || 2,450 kgf || N/A
+| ''Stationary'' || 2,450 kgf || -
-| 0.58 || 0.53 || 0.49 || 0.45
+| 0.57 || 0.52 || 0.48 || 0.45
 |-
-| ''Optimal'' || 2,450 kgf<br />(0 km/h) || N/A
+| ''Optimal'' || 2,450 kgf<br>(0 km/h) || -
-| 0.58 || 0.53 || 0.49 || 0.45
+| 0.57 || 0.52 || 0.48 || 0.45
 |-
 |}
@@ Line 125: / Line 120: @@
 {{Specs-Avia-Offensive}}
 <!-- ''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.'' -->
-{{main|N-37D (37 mm)|NR-23 (23 mm)}}
+{{main|Type 37-1 (37 mm)|Type 23-1 (23 mm)}}
 The '''''{{PAGENAME}}''''' is armed with:
-* 1 x 37 mm N-37D cannon, chin-mounted (40 rpg)
+* 1 x 37 mm Type 37-1 cannon, chin-mounted (40 rpg)
-* 2 x 23 mm NR-23 cannons, chin-mounted (80 rpg = 160 total)
+* 2 x 23 mm Type 23-1 cannons, chin-mounted (80 rpg = 160 total)
 === Suspended armament ===
 {{Specs-Avia-Suspended}}
 <!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
-{{main|OFAB-250-270 (250 kg)|S-5K|S-5M|S-21}}
+{{main|OFAB-250sv (250 kg)|S-5K|S-5M|S-21}}
 The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
 * Without load
-* 2 x 250 kg OFAB-250-270 bombs (500 kg total)
+* 2 x 250 kg OFAB-250sv bombs (500 kg total)
 * 16 x S-5K rockets
 * 16 x S-5M rockets
@@ Line 153: / Line 148: @@
 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.
-=== Modules ===
-{| class="wikitable"
-! Tier
-! colspan="2" | Flight performance
-! Survivability
-! colspan="3" | Weaponry
-|-
-| I
-| Fuselage repair
-| Compressor
-|
-| Offensive 23 mm
-|
-| BD-2-48
-|-
-| II
-| New boosters
-|
-| Airframe
-|
-| Offensive 37 mm
-| S5K
-|-
-| III
-| Wings repair
-|
-|
-| New 23 mm cannons
-|
-| S5M
-|-
-| IV
-| G-suit
-| Engine
-| Cover
-|
-| New 37 mm cannons
-| S21
-|-
-|}
 === Pros and cons ===
@@ Line 199: / Line 153: @@
 '''Pros:'''
 * Incredibly fast in a dive.
 * Excellent climb speed, almost same as the [[J-2]]
@@ Line 204: / Line 159: @@
 * 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, its hard to break your wings in turn
+* 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, but its still better than that of the the [[J-2]]
+* 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
-* Poor acceleration in speeds between 800 - 1,100 km/h
+* 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 ==
@@ Line 225: / Line 182: @@
 == Media ==
-''Excellent additions to the article would be video guides, screenshots from the game, and photos.''
+<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
+;Skins
+* [https://live.warthunder.com/feed/camouflages/?vehicle=mig-17_china Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
 == See also ==
-''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
+<!-- ''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.''
+* ''links to approximate analogues of other nations and research trees.'' -->
+;Related development
+* [[MiG-17 (Family)]]
 == External links ==
-''Paste links to sources and external resources, such as:''
+<!-- ''Paste links to sources and external resources, such as:''
 * ''topic on the official game forum;''
-* ''encyclopedia page on the aircraft;''
+* ''other literature.'' -->
-* ''other literature.''
+* [https://forum.warthunder.com/index.php?/topic/285040-mikoyan-gurevich-mig-17/ Official data sheet - more details about the performance]
 {{AirManufacturer Shenyang}}
 {{China jet aircraft}}

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Difference between revisions of "J-4"

Latest revision as of 12:38, 21 September 2023

Contents

Description

General info

Flight performance

Details

Engine performance

Survivability and armour

Modifications and economy

Armaments

Offensive armament

Suspended armament

Usage in battles

Pros and cons

History

Media

See also

External links