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Flametz

Nanchang J-12 and J-12I Light Fighter

Opinions on J-12/J-12I?  

45 members have voted

  1. 1. Do you want the J-12 (1970, non-afterburning)?

    • Yes (Tech tree)
      35
    • Yes (Premium)
      9
    • No
      1
  2. 2. At what BR?

    • 9.3
      11
    • 9.7
      16
    • 10.0
      9
    • 10.3
      7
    • "No" to previous question
      2
  3. 3. Do you want the J-12I (1975, afterburning)?

    • Yes (Tech Tree)
      38
    • Yes (Premium)
      6
    • No
      1
  4. 4. At what BR?

    • 9.7
      7
    • 10.0
      13
    • 10.3
      14
    • 10.7
      9
    • "No" to previous question
      2


Nanchang J-12 (1970)

lEhcyQn.jpg

 

The J-12 project was initiated in 1969 after the failure of the more ambitious J-11 project (not related to the J-11 currently in service based on the Flanker/Su-27), and the requirement was made for a STOL light fighter that could take off from poor runway conditions and engage in aerial guerrilla warfare (small, cheap, fast and with decent firepower). The first production variant with a non-afterburning engine was created in 1970. The J-12 has a normal takeoff weight of 4,450 kilograms and an empty aircraft weight of only 3,100 kilograms, occupying the title of "lightest" plane of the world's supersonic fighters. Due to the light weight of the body, the T/W ratio is relatively high, and the acceleration is relatively good and even with the original non-afterburning engine (Wopen WP-6B, a Chinese production of the Tumansky RD-9BF-811) it produced good T/W ratio, with engine producing 3454 kgf. This propelled the plane to a max top speed of Mach 1.22 at 10800 meters. The plane also demonstrated good maneuverability, and had a sustained turn radius at 1140 meters at 5000 meters. It was fitted with provisions for two AAM (either PL-2 or PL-5 models), 1 23mm and 1 30mm Type-30 (Chinese NR-30). Due to the small size, nose intake design and low weight design, it was not equipped with radar. 

 

Stats:

Crew: 1

Length: 10.664 m (34 ft 11 in) excluding pitot probe

Wingspan: 7.192 m (23 ft 7 in)

Height: 3.706 m (12 ft 2 in)

Wing area: 16.0 m2 (172 sq ft)

Empty weight: 3,100 kg (6,834 lb)

Max takeoff weight: 5,295 kg (11,673 lb)

Powerplant: 1 × Wopen WP-6B non-afterburning turbojet, 3454 kgf thrust

Maximum speed: Mach 1.22 (1305.4 km/h) at 11,000 m (36,000 ft)

VNe: Mach 1.5

Range: 1,385 km maximum estimated range on internal fuel

Service ceiling: 16,870 m (55,350 ft) service ceiling.

Rate of climb: 160 m/s 

Take-off run: 450 m (1,480 ft)

Armament: x1 30mm (80 rounds per gun), x1 23mm (120 rounds per gun), x2 missiles (PL-2 or PL-5 model)

Turn radius: 1140m

vJq9p3c.png

 

 

:excl: Additional Images:

Spoiler

 

tIdrgHI.png

 

P0Eqem7.png

 

KjyPanW.png

 

Image result for j-12 fighter china

 

 

 

 

 

Nanchang J-12I (1975)

Vn3lumI.png

 

This revised variant of the J-12 named the "J-12I" replaced the previous engine with an afterburning Wopen WP-6Z engine that outputted a maximum of 4050 kgf of thrust on afterburner, increasing its top speed to Mach 1.386 but also reducing its non-afterburner top speed to Mach 0.95 as its non-afterburning engine thrust was reduced to 2500 kgf. An engine revision such as this also modified the nose to feature a shock cone for improved high speed aerodynamics and engine performance, and in its new nose cone, it received a small radio rangefinding device for ground attack use. This also increased its acceleration a notable amount, where it was able to accelerate from Mach 0.9 to Mach 1.2 at a height of 5,000 meters in 65 seconds; in comparison, the US F-5A took 140 seconds to accelerate from Mach 0.9 to Mach 1.2. This improved variant also added an additional provision for an AAM under the fuselage, bringing the total number of missiles able to be carried up to 3. Otherwise had same armament (x1 23mm and x1 30mm Type-30). This updated model still did not feature a radar set but improved in other areas such as simplified control surfaces for refined handling and a lighter, area-ruled fuselage with reduced wing-sweep to increase both low and high speed performance. Some refinements included the implementation of Fowler flaps for improved combat usage and lower landing speeds. 

 

Stats:

Crew: 1

Length: 10.665 m (34.99 ft) excluding pitot probe

Wingspan: 7.192 m (23 ft 7 in)

Height: 3.706 m (12 ft 2 in)

Wing area: 16.0 m2 (172 sq ft)

Empty weight: 3,172 kg (6,993 lb)

Max takeoff weight: 5,295 kg (11,673 lb)

Powerplant: 1 × Wopen WP-6Z afterburning turbojet, 4050 kgf thrust with afterburner, 2500 kgf without afterburner.

Maximum speed: Mach 1.386 (1483 km/h) at 11,000 m (36,000 ft) 

VNe: Mach 1.5

Range: 1,167 km (725 mi; 630 nmi) maximum estimated range on internal fuel

Service ceiling: 17,410 m (57,120 ft) service ceiling. 

Rate of climb: 180 m/s (35,000 ft/min) maximum

Take-off run: 500 m (1,640 ft)

Armament: x1 30mm (80 rounds per gun), x1 23mm (120 rounds per gun), x3 missiles (PL-2 or PL-5 model), 3 total hardpoints for rocket pods or bombs

(using this to convert Mach 1.386 at 11000m to km/h TAS, where at 11000m Mach 1 = ~1070 km/h http://www.aerospaceweb.org/question/atmosphere/q0112.shtml)

 

:excl: Additional Images:

Spoiler

 

 

68c44Vd.png

 

s7qg3Jm.png

 

xd5tkPn.png

 

GMdsMdf.png

(J-12I with missiles fitted for flight tests)

 

 

For both planes:

Sadly, neither variant entered service as the J-7 (Chinese Mig-21F) outperformed this plane by the time six pre-production models were created, and the program was ended in 1978. Most were scrapped, but two still exist as museum pieces. The design was considered for navalization due to its low mass and small size for easy carrier operations, but no prototypes were made to trial the concept. 

qpvzkMt.png

 

So why this in WT?

I believe that this would be an interesting addition for USSR aviation as it occupies a unique light-fighter niche within the Mach 1.2 to Mach 1.6 bracket. The J-12I afterburning version especially could be a viable opponent to future additions such as an American F-5C Skoshi Tiger while also closing the performance gap with the current top supersonic plane (the Mitsubishi T-2K). It offers improved flight performance over the Mig-19 with an additional missile slot to boot, making it an ideal successor the Mig-19 without bringing us to the Mach 2+ range yet. 

 

Meanwhile, the normal J-12 non-afterburning version could serve either as a foldered downgrade at a lower BR (much like the Yak-15 and Yak-15P) or as a future rank 6 premium when Gaijin introduces rank 7 aviation. 

 

Sources:

 

Edited by Flametz
title change + more images + clarified a few details + readability edits.
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Open for discussion. :salute:

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On 16/06/2019 at 20:11, leroyonly said:

Open for discussion. :salute:

Thanks!

(Gonna reserve this space in case I need to add anything)

 

Note the missiles it carries are comparable in performance to the R-3S (PL-2) and R-13M (early PL-5) currently mounted on the in-game Mig-19PT, with the best possible variant of the PL-5 at the time being comparable to an R-60 (not all aspect variant) and only on the J-12I. 

Its gun based firepower for both variants is a 30mm NR-30/Type 30-I firing at 800 rounds/minute with 80 rounds of ammo in the left wingroot, and a 23mm NR-23 with 120 rounds of ammo in the right side of the fuselage. The trigger groups are separate for each gun.

 

update: a slightly better quality image of a J-12I:

Spoiler

C9Fshsz.png

 

update #2: 1250kg fuel weight capacity(?) (https://www.wukong.com/question/6675492640298909956/)

also another new image showing the profile difference between the two variants:

JjYJ7VB.png

 

Edited by Flametz
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Could be an event plane for the Soviets, or a rank 6 if Gaijin reverses their stance on the idea of bringing the Chinese tech tree over to the main client (while a lot of their stuff would indeed be copy+paste, they do have a fair number of unique content at the later tiers, especially for ground forces).

Edited by Z3r0_
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Now that we have the Chinese tech tree in the game, this would be a perfect aircraft to give them a unique supersonic jet for their tree.  +1 from me.

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Update again but not much, just some interesting tidbits.

The designer of the plane standing in front of a test model:

s2uVNH6.png

http://m.afwing.info/aircraft/the-stealth-fighters_3.html

 

And one of the earlier models now on display in Beijing's Aviation museum 

Spoiler

ShowPic.aspx?vpath=1&ptype=1&path=%5cboo

 

Oh yeah, this plane happens to be smaller than a P-47 and was proposed to be modified for naval air (aircraft carrier) use, however no further development has since taken place. This render of the plane below mounting PL-2s should give a decent scale for just how tiny it was:

 

Edited by Flametz
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On 23/09/2019 at 08:34, Flametz said:

Update again but not much, just some interesting tidbits.

The designer of the plane standing in front of a test model:

s2uVNH6.png

http://m.afwing.info/aircraft/the-stealth-fighters_3.html

 

And one of the earlier models now on display in Beijing's Aviation museum 

  Reveal hidden contents

ShowPic.aspx?vpath=1&ptype=1&path=%5cboo

 

Oh yeah, this plane happens to be smaller than a P-47 and was proposed to be modified for naval air (aircraft carrier) use, however no further development has since taken place. This render of the plane below mounting PL-2s should give a decent scale for just how tiny it was:

 

 

So is armament 2x30mm or 1x30mm and 1x23mm?

Because above render makes it look like it has 2x30mm

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