ground vehicles PT-76E - PT-57 - Combining ZSU-57 and PT-76

[Alphanoodle 526]

Time to suggest the most modern modification of the PT-76, the PT-76E, sometimes referred to as PT-57, equipped with a modernized version of the S-60 57mm AA gun used on the ZSU-57. 

 

Images:

Spoiler

 

History:

Historical background on the vehicle is almost non-existant so i decided to copy the "article" from wikipedia since it contains by far the most information on this vehicle and there's really nothing wrong with it from my further research.

Spoiler

PT-76E - This is the most recent PT-76 modernization program. It increases the vehicle's battle efficiency by including a radical growth in firepower, which required a new turret AU-220M and other weapons. This variant is armed with a 57 mm autocannon (which is a modification of the 57 mm L/76.6 S-60 AA gun. It was developed by CB Burevestnik (Nizhniy Novgorod). Its armor-piercing tracer rounds fired from 1,120 m can penetrate 100 mm of steel armor (more on that in the specifications). The new weapon can destroy most modern APCs and IFVs. It can also engage aerial targets out to 6 km. The autocannon uses two types of ammunition, splinter-tracer and armor-piercing-tracer. However, it is possible to fire a special zenith shell. The gun can fire single shots, short bursts (2 to 5 rounds), or long bursts (up to 20 rounds). It can also fire continuously up to 120 rounds per minute. This system functions by using the energy generated by each round, not by using an external power source. Firepower is improved 5.5 times in the PT-76E over the PT-76B. The PT-76E is fitted with a more powerful UTD-20 6-cylinder 4-stroke V-shaped airless-injection water-cooled multifuel 15.8 litre diesel engine. It develops 300 hp (224 kW) at 2,600 rpm and is taken from the BMP-1 as is the transmission. The power-to-weight ratio has been improved to 20 horsepower (15 kW) per ton. This also increases the maximum road speed from 44 km/h to 60 km/h, with an average cross country speed from 32 km/h to 42 km/h. Other engine options are the UTD-23 or V-6BF. The vehicle has new tracks. Driver fatigue has been reduced. The vehicle's survivability on the battlefield is improved with the introduction of a new fast-acting firefighting system. The vehicle also has improvements in fire control and optical equipment, for instance the new sights 1P67 and "Liga-S". This modernization program increases the PT-76's performance by 2.7 times, which is still comparatively low. The vehicle was accepted by the Russian marines in 2006 and about 40 or 50 vehicles were ordered.

 

Specifications:

Armament: 

57mm autocannon (upgraded version of the S-60 used on the ZSU-57) in the AU-220 two-men turret with 93 total rounds

The gun feeds from a new automatic loading ammunition feed system that houses 20 ready-to-fire rounds as shown in the first image here: 

Spoiler

The turret basket has a powered 73 round ammunition carousel that provides ammunition to the linkless feeder above as seen in the second image in the spoiler.

120 RPM RoF 

Muzzle velocity: 1020 m/sec

Gun is fully stabilized (2 plane stabilization)

-5 / +30°* elevation and 360° traverse            * +30° is estimated since i couldnt find any data on the AU-220 turret used on the PT-76 - the AU-220M can elevate up 75°, and you dont need the best eyes to see that +75° is not possible on the PT-76

1P67 sight

Ammunition and penetration:

The gun fires 2 main types of ammo: 

53-UBR-281U Armor-piercing Tracer Round with 13g of A-IX-2 (22g of TNT) - same as on the ZSU-57 (the upgraded AP belt)

53-ERM-281U Fragmentation Tracer Round

The AP shell can penetrate 100mm of RHA at 1120m, which is quite a bit more powerful than the ZSU-57s guns. Considering that this is the same ammuntition that the ZSU-57 uses, i would estimate that the penetration at point blank range is around 160mm of RHA. Take that number with a shovel full of salt though, this is only a rough estimation and the actual values could be very different.

 

Propulsion: 

The vehicle is powered by the UTD-20 6-cylinder 4-stroke V-shaped airless-injection water-cooled multifuel 15.8 litre diesel engine. Both engine and transmission are taken from the BMP-1

Engine power: 300 HP at 2600 RPM. (PT-76B has 240 HP for comparison)

Weight: ~15 tons (PT-76B has ~14.6 tons)

Power to weight ratio: 15 HP per ton

Top speed has been increased from 44 to 60 km/h (37 mph)

 

Armour protection and survivability: 

3 crew members still covered in the same thin armour:

lower frontal hull: 13mm

upper hull: 10mm

sides have 13-10mm and rear has 6mm

The turret has "All-around fire - protection against 7.62mm bullets (~Level 3 acc. to STANAG 4569)."

 

 

So that is the PT-76E what do you think about it? Could it fill any gaps in the Soviet light tank tree or should it rather be a premium? Leave your thoughts down below and vote on the poll! Sorry for any minor grammar mistakes, my first language is german :3

 

Sources:

http://warfaretech.blogspot.co.at/2014/07/57mm-autocannon-turret-from-russia.html

https://en.wikipedia.org/wiki/PT-76

http://www.tanks-encyclopedia.com/coldwar/USSR/soviet_PT-76.php

http://www.enemyforces.net/tanks/pt76.htm

http://www.army-guide.com/eng/product5170.html

http://www.flak11.de/Flak-2start.htm

http://www.army-technology.com/projects/pt-76lat/

https://www.militaryfactory.com/armor/detail.asp?armor_id=163

https://www.militaryfactory.com/armor/detail.asp?armor_id=19

Edited January 16, 2018 by Alphanoodle

[SAUBER_KH7 3,326]

Open for Discussion.

[xX_Lord_James_Xx 2,400]

Might be a good 6.3 or so, but not any lower. 

[CaID 8,996]

19 minutes ago, xX_Lord_James_Xx said:

Might be a good 6.3 or so, but not any lower. 

right between the Pt-76 and the Object 906. just like the t-34. the 76mm come fiest, the 57mm fallow and the 85mm is last.

[WulfPack 1,693]

Voted premium because AFAIK it's meant for export.

Edited November 23, 2017 by WulfPack

[Retry 7,363]

Accepted by the Russian Marines in 2006.

Even though there's no time cutoff it's still pretty late.  The bloody thing's younger than me.

Ah well, maybe we'll get a Dardo IFV for Italy out of this too.

Spoiler

 

Edited November 23, 2017 by Retry

[xX_Lord_James_Xx 2,400]

5 hours ago, WulfPack said:

Voted premium because AFAIK it's meant for export.

 

But it’s still used by the Russian Marines... It’s not like the M4A2 which was never used by the US Army other than for testing. 

[Admiral_Aruon 2,264]

interesting. so i can see the PT-76E/PT-57 (makes more sense as the PT-57) going anywhere from 5.3-8.3 based on how gaijin has placed things like the PT-76, ZSU-57-2, BMP-1 and begleitpanzer. so i'm just going to leave that one up to gaijin.

 

now while this was accepted in 2006; quite an eyebrow raiser as Retry noted; it must be noted that:

 

1: both the chassis (PT-76) and gun (modernized S-60) are well before the 1980s, let alone the new millenium.

 

2: this is both a technical upgrade like the 90s SACLOS for the british swingfire, and an "old busted hotness", aka merging the old into the new.

Spoiler

 

3: nothing truly new is brought to the game save for, maybe a modern russian camo on a PT-76, and the russian counterpart to the bagelpanzer.

 

4: this would open the door to other modern IFV vehicles lacking all the high-tech things you expect in modern vehicles, chiefly things like composite armors and such.

[WulfPack 1,693]

9 hours ago, Retry said:

Accepted by the Russian Marines in 2006.

Even though there's no time cutoff it's still pretty late.  The bloody thing's younger than me.

Ah well, maybe we'll get a Dardo IFV for Italy out of this too.

  Reveal hidden contents

 

 

7 hours ago, xX_Lord_James_Xx said:

 

But it’s still used by the Russian Marines... It’s not like the M4A2 which was never used by the US Army other than for testing. 

Whoops..

[xX_Lord_James_Xx 2,400]

4 hours ago, Admiral_Aruon said:

 

4: this would open the door to other modern IFV vehicles lacking all the high-tech things you expect in modern vehicles, chiefly things like composite armors and such.

 

Not really, as most IFVs have an ATGM to go with them (M2 Bradley, BMP/BMD series, etc.) or only have an autocannon, usually not overly powerful either (Marder 1, FV107 Scimitar) which would put it a BR where it fights WWII tanks, which I'm not a fan of (not overly happy with the current PT-76B and where it's placed, but I can deal with it because it's not an autocannon with 120rpm). 

 

The autocannon is also VERY powerful, comparing it the Bagelpanzer's autocannon is like comparing the 75mm M3 cannon (Sherman's gun) with the 7.5cm KwK 40 (Pz.IV F2), similar pen too  Also, I believe, the S-60 has an APDS shell, giving it added pen to deal with thick armored targets. 

[WulfPack 1,693]

3 hours ago, xX_Lord_James_Xx said:

I believe, the S-60 has an APDS shell, giving it added pen to deal with thick armored targets. 

Haven't seen anything for an APDS or APFSDS but considering how modern it is I wouldn't doubt it.

[xX_Lord_James_Xx 2,400]

1 hour ago, WulfPack said:

Haven't seen anything for an APDS or APFSDS but considering how modern it is I wouldn't doubt it.

 

I heard a rumor, through a grape vine, on Wikipedia () that the S-60 (or at least one of its derivative) could load an APDS shell for anti armor use. Though, this might have been for a new AU-220M “Baikal” turret, so might be too modern 

[Retry 7,363]

13 hours ago, xX_Lord_James_Xx said:

But it’s still used by the Russian Marines... It’s not like the M4A2 which was never used by the US Army other than for testing. 

The USMC is a thing too.

[Mercedes4321 4,695]

I know that the time limit isn't really a thing anymore, but this has to be one of the most modern ground vehicle suggestions I've seen on these forums.

[xX_Lord_James_Xx 2,400]

3 hours ago, Retry said:

The USMC is a thing too.

 

My statement is still true: 

 

17 hours ago, xX_Lord_James_Xx said:

It’s not like the M4A2 which was never used by the US Army other than for testing. 

 

... I did not say USMC. 

[Retry 7,363]

53 minutes ago, xX_Lord_James_Xx said:

My statement is still true: 

... I did not say USMC. 

Yes.

In the context of the thread (guy saying PT-76E should be premium b/c export-focus), seemed like you were justifying either the PT-76E as a regular or the US M4A2 as a premium due to its use as a LL tank (could've been mistaken for implying the US didn't use the M4A2 themselves, which would be false).  I couldn't really tell.

[BakerOne 579]

You should add the option for BR 9.7, since with a 120 rounds per minute with stabilizer, that gun is going to be the single most powerful weapon in the game to date.

[Results45 2,200]

Neato! 

[Milocat 4,857]

Cool tank.  Definitely has potential.  

 

+1 as a regular or premium vehicle!

[kamikazi21358 998]

I voted no:

 

It it would be a cool tank and I would defiantly want it, but I think it should wait - 2006, that is pretty modern.  I think Cold War era should be worked on more, and stuff that would make these modern tanks relevant such as fire control systems, fire computers, NV and thermals, etc. Not to mention the tiny maps for these modern tanks.  I’ll come back in a year or two to upvote this.

[Matt_82 1,096]

I'm all for. Its not doing anything that isn't already in the game so I'm not fussed about when it was introduced.  Bet it'd be great to play.

[CokeSpray 7,274]

Suggestion passed to the developers for consideration.

[leroyonly 4,311]

As the PT-76 with 57-mm has been implemented with Battle Pass: Season V,

 

Moved to Implemented Suggestions.