Source:http://ftr.wot-news.com/2014/02/18/t49-light-tank-us-upcoming-tier-8/
来源↗ 

Hello everyone,
大家嚎，

now that the fuss about the new graphics is over, we’re going to have a look at the upcoming tier 8 light tank candidate, the T49.
关于新的主题（SS博客的新主题在应用12小时后由于Bug过多被撤下——译注）的讨论已经过去了， 我们现在来看看美国的新8级轻坦的候选车，T49。

Basically, the T49 was a prototype M41 Walker Bulldog with a 90mm gun (crew of 4). In the late 40′s and early 50′s, it was recognized that a 76mm gun is no longer enough to combat modern Soviet medium tanks, specifically the T-54. And so, in January 1950, a commanding officer of Detroit Arsenal recommended developing a light tank with a 90mm gun, specifically to install a 90mm smoothbore gun on the M41 chassis. This 90mm gun was a new weapon, designated T123. It started as a smoothbore, but after bad tests results, when it came to accuracy, it was modified with shallow rifling, creating the T123E3 gun. Two of these were mounted in the production M41E1 turrets and this combination was redesignated T49. The turret was modified too: it was somewhat higher and it was equipped with a stereoscopic rangefinder. Further modification were made when in the ammo stowage compartment. The gun itself could fire three types of rounds: HE, HEP (HESH) and HEAT rounds.
基本来说，T49就是带了90mm主炮的M41华科猛犬（4人乘员）。在40年代末至50年代初的时候，他们认为76mm主炮已经不足以对抗现代苏联中坦了，尤其是T-54。于是在1950年的一月，底特律军工厂的一名指挥官向上建议开发一辆用90mm主炮的轻坦，尤其是要把90mm滑膛炮装在M41的底盘上。这个90mm炮是个新武器，代号是T123。它一开始是杆滑膛炮，但是在精准度测试结果很烂的情况下，它被加上了浅膛线，于是T123E3主炮就诞生了。两杆炮被装在了量产的M41E1的炮塔上，这个组合的代号就是T49了。炮塔也是经过改造的版本：炮塔比原来要高，还附加了一个立体的测距器。弹药架的位置也做了一些改动。这杆炮可以发射三种弹药：HE，HEP（HESH）以及HEAT弹。

The two T49′s were sent to Aberdeen, where they were tested between May 1954 and May 1955. The tests of the vehicle were somewhat satisfactory, but the gun still had issues with the ammunition used: specifically the HEAT round was very inaccurate, making the HEP (HESH) round the preferred way to deal with armor. There were some other issues too and as a result, the army lost interest in this vehicle. The prototypes were stored in Aberdeen – I am not sure whether they still exist or were scrapped.
两辆T49被都送到了Aberdeen，在1954年5月和1955年5月期间接受了测试。测试结果好像还可以接受的样子，但是主炮所用的炮弹还是有些问题：尤其是HEAT弹，精准度很不好， 这就让HEP（HESH）弹变成了对抗敌方装甲的主要弹种。同时还有一些其他的问题，结论就是军方对这辆车失去了兴趣。这两辆原型车就被放在了Aberdeen—我不确定这两辆车是否还在那里，或者已经被销毁了。

It’s worth noting that the T49 is not the “only” 90mm Walker Bulldog project – Cadillac made a proposal to arm the Walker Bulldog with a 90mm M41 gun from the M48 Patton in November 1958. At this point however, the army was focusing on creating new and superior light tank and so this project never passed beyond the drawing boards.
值得注意的是，T49并不是“唯一的”一个把90mm炮装在华科猛犬上的产物— 凯迪拉克在1958年11月提出了要把华科猛犬装上一杆M48巴顿的90mm M41炮的计划。然而在这个时间点，军方正在集中精力开发新的轻坦，所以这个计划永远没有能够走出草图阶段。

In World of Tanks
在WOT中 

This vehicle was confirmed by Storm to be the American tier 8 light tank and from what I can gather, it was a good choice, especially given its upgrade possibilities (you’ll like them, trust me). First, some basic overview of the tank. Please note that due to its shallow rifling, the T123E3 gun is actually acceptable for World of Tanks.
Storm肯定说这辆车就是新的8级美国轻坦，而从我所能收集到的信息来看，这个决定不错，尤其是这辆车还有能够升级的可能性。首先让我们来对这辆车有一个初步的认识。请注意，尽管炮是浅膛线炮，但是T123E3还是能被塞进WOT的。 

Armor
装甲 

As you can imagine, the T49 is not exactly well armored – after all, it’s a light tank. Its armor was made of RHA steel and welded. The turret was cast.
正如你所想象的一样，T49的装甲并不好—人家毕竟是轻坦。 装甲是由轧质均质装甲所制成的。炮塔是铸造的。

Hull:
车身： 

– 正面首上: 25mm 倾斜60° (等效为50mm)
– 正面首下: 32mm 倾斜45° (等效为45,2mm)
– 侧面: 25-19mm
– 后面: 13-19mm
– 车顶: 19mm
– 底盘: 10 或者 38mm

Turret:
炮塔： 

– 炮塔正面: 25mm 倾斜18° (等效为26,3mm)
– 炮盾: 32mm
– 侧面: 25mm
– 背面: 25mm
– 炮塔顶: 19-13mm

Not exactly a game breaking armor, but solid.
并不是什么会破坏游戏平衡的装甲数据，但是起码够看。 

Gun
主炮 

Well, here, we have a bit of a problem. I haven’t found any penetration data on the 90mm T123 (the gun itself is L/50 apparently) and even if there were some available, calculating the HESH effect is always really messy. What we know is that it fired:
恩，现在我们遇到了一些问题。我还没找到任何关于90mm的T123炮的穿深数据（这杆炮本身是50倍径的）当然就算有这样的数据，计算HESH弹所带来的效果也会很麻烦。我们所知的是它发射的弹种： 

– T91 HE round at 731 m/s
T91 HE弹，弹速731m/s

– T142E3 HEP (HESH) round at 792 m/s
T142E3 HEP(HESH)弹，弹速792m/s

– T108E45 HEAT round at 853 m/s
T108E45 HEAT弹，弹速853m/s 

What I was able to find out is that based on the US reports, the T108E45 HEAT round was able to penetrate between 349mm and 377mm (depending on charge used) – classic gold round. Other than that, we know that the vehicle carried 46 90mm rounds, the gun elevation was -9,5/+19,5 degrees and it could fire 10 rounds per minute.
基于这份美国的报告，我发现T108E45 HEAT弹的穿深大约在349mm~377mm之间（取决于使用了何种火药）—典型的金币弹。除此之外，我们还知道这辆车的载弹量是46发 90mm的炮弹，主炮的俯/仰角分别是-9.5/+19.5°，射速大约是每分钟10发。

Either way, when it comes to the Cadillac proposal to arm the Walker Bulldog with the M41 90mm gun, the gun is actually in the game already (M48′s stock gun), so we know how it would behave in the game:
无论怎样，当凯迪拉克提出要把华科猛犬装上M41 90mm炮的时候，其实这杆炮已经在游戏里出现了（M48的白板炮），所以以下是游戏中的数据：

均伤: 240/240/320
均穿: 173/263/45
射速 (作为平衡参数平衡后的): 9,52 发/分钟
百米精准度: 0,36
瞄准时间: 2s

That however would be unhistorical (although it would probably make a much better stock gun than the quirky T123E3).
然而以上数据是非史实的（但是作为白板炮来说，它应该比那杆奇怪的T123E3炮要好很多） 

Mobility
机动性 

The vehicle weighed 24,1 tons and was powered by a Continental AOS-895-3 supercharged V6 engine with the power output of 500 hp, giving it the power-to-weight ration of 20,74 hp/t. Not bad. Its maximum speed was 72 km/h. While the power-to-weight isn’t that awesome for a light tank, it has a potential of being very fast.
此车中24.1吨，动力来源为一个通用汽车 AOS-895-3机械增压V6引擎，发动机出力为500马力，让推重比达到了20.74。恩，不是很差。它的极速是72km/h。尽管推重比作为轻坦来说并不是很出色，但是它有能够开得很快的潜力。

I kinda imagine this vehicle in the game as something like current Chaffee. Quite tall, good passive scout, good firepower and hulldown capability, but the agility probably won’t be completely stellar. Sounds like a solid tank for now, right?
我能够想像这辆车在游戏中的表现就和现在的霞飞差不多。车身挺高，静默点灯，火力不错，也能够藏个车身打人什么的，但是机动性并不是最主要的。现在这坦克听上去不错，是吧？

Well, wait, there’s more…
恩，稍等一下，其实还有…… 

Upgrades
升级版 

That’s right, a tank needs its second turret and more guns. There is but one option in this case:
没错，一辆坦克需要第二个炮塔， 以及其他的主炮。这种情况下，我们有且只有一个选择： 

You are looking at the XM551 (prototype Sheridan) turret mounted on a M41 chassis. Very little is known about it other than in July 1962, XM551 test bed turret was mounted on the M41 chassis for the evaluation of firepower and tests. These tests took place in Aberdeen – they started on 23.8.1962, with 590 rounds being fired from the 152mm gun-launcher.
你所看到的是XM551（谢里登原型版） 炮塔被装在一个M41底盘上的情形。我们除了知道在1962年的7月，测试版的XM551炮塔被装在了M41底盘上以进行火力以及其他方面的测试以外，其他信息所知甚少。以上实验是在Aberdeen进行的—实验在1962年8月23日开始，一共从152mm的炮击管中发射了590发炮弹。（炮击管：可从炮管中发射导弹——译注）

Now, you might say: “But Silentstalker, how is this possible, SerB said ‘no rocket launchers in WoT!’ and this gun fired the Shillelagh missiles!” – well, there is a trick around that. You see, by the time this test bed was built, the Shillelagh missile was not yet developed, so in this case, the gun is really just a 152mm gun.
但是你们现在会说：“SS啊，这尼玛不可能啊，SerB以前说过“WOT中不会有火箭发射器的！”这杆主炮用的又是橡树棍反坦克导弹啊！”—恩，这就是解决问题的关键了。你看，在测试版的炮塔被造出来的时候，橡树棍导弹还没被造出来呢，所以在这种情况下，这杆炮其实就是个152mm炮。

Considering how little is known about this vehicle, its parameters will be mostly speculative. Most people are probably interested in the 152mm XM81 gun-launcher. Basically, it’s a big HEAT lobber. It’s main round is the XM409 HEAT round, weighing 22,6 kg. It had the muzzle velocity of 689 m/s and it was capable of penetrating 177mm at 60 degrees (in WoT terms it’s like 205 PEN I think). Other than that, it can fire a HE round too (M657, 23,4kg). An APFSDS round was also developed for the 152mm gun, but that is way beyond WoT timeframe and had nothing to do with the project. In the Sheridan turret, it would have the elevation of -10 to +20 and could fire 4 rounds per minute. Prototype Sheridans (XM551 pilots) carried 20 rounds of 152mm ammunition.
鉴于这辆车的信息很少， 我们也只能推测一下这辆车的各种参数。大部分人应该都会对152mm XM81炮击管感兴趣。总的来说，它就是个大号的HEAT发射器。它的主要炮弹是XM409 HEAT弹，弹重22.6Kg。炮口初速度是689m/s，能够击穿60°倾斜的177mm的装甲板。（用WOT的程度来说，穿深大约在205的样子吧）。除此以外，它还能够发射HE弹（M657弹，重23.4Kg）。与此同时，一种特制的152mm版APFSDS弹也被开发了出来，但是这已经超过了WOT的时间年限，所以和这个计划没什么关系。谢里登炮塔的俯/仰角是-10/+20，射速为每分钟4发。谢里登原型版（XM551先行版）的载弹量为20发152mm的弹药。

As for the turret itself, it was made from steel (only the Sheridan hull was aluminium!), so no problem there, unfortunately I haven’t been able to find any actual turret armor thickness values. Not even Hunnicutt has them, strangely enough. It’s reasonable to assume that the Sheridan turret armor is quite thin though, around 30mm.
炮塔本身是用钢做的（只有谢里登车身用的是铝！）所以没什么问题，但是不行的是我没找到任何实际的炮塔厚度数据。 Hunnicutt也没有这些数据，恩，很奇怪。但是有理由推测说谢里登炮塔的厚度应不会很厚，大约在30mm的样子。

Well, there you have it.
以上，感谢阅读。 

Source:
原文参考书：
Hunnicutt – A History of the American Light Tank Vol.2: Sheridan