原文:http://ftr.wot-news.com/2014/12/29/is-5-object-730/

Hello everyone,

大家嚎

today, a new Soviet tier 8 heavy premium tank is getting introduced to the supertest – it’s called IS-5 (Object 730) and here’s a short preview of its history and how it’s going to look.

今天一个新的8级特种车加入到拖拉机世界豪华午餐。他被称为IS-5（730工程），我们来看看他短命的一生有什么值得我们来*的。

Object 730 (also known under its IS-5 designation) was a Soviet heavy tank and a precursor to the later design known as the IS-8 (or T-10). To avoid confusion: there were two IS-5 tanks actually. One was a modified IS-2 (also known as Object 248), the other is this one.

730工程也就是IS-5其实是苏联著名的IS-8（T-10）重型坦克的原型车，需要说明一下以免混淆的是其实有两个被命名为IS-5的坦克，其中一个是IS-2的改进型坦克，248工程，另一个就是他。（那个年代争相向老板拍马屁是常态，不同单位重名拍一起去了很正常）

The development of this vehicle started in late 1948. The goal was nothing less than complete overhaul (modernization) of the IS-4 heavy tank in order to increase its performance. The designers of the vehicle (Chelyabinsk plant) proposed to replace a number of internal components and to make the entire vehicle weigh less (specifically, to lower the weight from IS-4′s 60 tons to 50 tons. This “slimming”, along with the use of modernized engine was to assure better combat characteristics.

1948年后期开发这款车的原因是要对又慢又慢又慢的IS-4各种问题进行全面优化，刷新毛子军队的时髦值。车里雅宾斯克设计局的专家建议更换一些部件降低IS-4高达60吨的体重，用更现代化的引擎使之跟的上时代的节奏。（跟战后德国人的思路差不多）

The early variant of Object 730 was developed in Spring 1949 by the Chelyabinsk Tractor Plant (ChTZ) by a team led by Zh.J.Kotin. It was quite different from the original IS-4, especially the turret was reworked to implement the lessons learned during the IS-3 and IS-7 development. The transmission, suspension and loading mechanism were updated as well, the combat and engine compartments also underwent complete overhaul. The new modernized turret was cast with variable thickness and was fitted with the classic D-25T gun in a new mount, that was sturdier and also easier to fix and install. The gun was fitted with new electromechanical shell loading assistant for higher rate of fire.

730工程的早期改进型号于1949年春天由车里雅宾斯克的Zh.J.Kotin团队提出，他们跳出了原有IS-4的框架创造了一个全新的方案（用改进的名义骗经费做了个新车）。尤其是炮塔变化最大，类似IS-3到IS-7的演化。传动，悬挂和发动机都进行了彻底的改革。炮塔采用了新的厚度变化铸造设计，安装了改进的D25T传家宝。更坚固耐用利于维护。新的电动辅助装填设备甚至提高了射速。

In early April 1949, the full set of documents along with a wooden mock-up was sent to Moscow. There, the representatives of the army and the industry checked it out and made a list of required improvements to the design. The design was updated as a result and in May 1949, it was approved. After that, the designers started working on assembly documents for the most difficult to produce components first, as the production of a new tank took a significant effort to organize. The documents were ready in late June 1949.

1949年，全套设计和木制模型被送到莫斯科。军代表和行业专家进行了评估并提出改进意见后，改进后于1949年5月得到了生产批准。设计师开始着手生产最难工艺最复杂的部件，在团队的努力下1949年6月下旬一切都已经准备好了，但是

肯定不能这么顺利吧

The assembly of the prototypes was delayed however and it was decided to use modified IS-4 vehicles as prototypes instead. In order to meet the testing deadline (which was August 1949), the designers took two IS-4 tanks and reduced their weight to 50 tons by removing the turrets and using mockup weight blocks instead. The V-12 engine in the prototypes produced 700 horsepower, the stronger, modified V-12-5 appeared only later. A whole set of modules for the future Object 730 was also tested on the IS-7 prototypes, modified for this task. And so was the summer of 1949 filled with testing of various components of the vehicle in various ways.

组装生产被延迟，并要求用拆装IS-4原形车来代替（要S了，拆卖10级车改装8级）。为了满足测试的最后期限（1949年8月）设计师拆掉IS-4，并去掉炮塔改用配重，把总重量压缩进50吨，以V12发动机为原形改造程00马力，马力更强的V-12-5还没造出来呢。设计模组也被用来测试能否改进IS-7原形车，看是不是能挽救这些没有前途的胖子让他们拉个皮抽个脂给个机会上战场。1949年的夏天这个配方被测试用来挽救各种项目。

The first real hull of the true Object 730 was ready on 30.7.1949, second hull arrived on 9.8.1949 in Chelyabinsk. At this point, the assembly of both tanks was further delayed, as some of the components were still not developed properly or were still being tested. Nevertheless, the first prototype was ready in mid-September 1949. The first prototypes still had an older engine cooling model and 6-gear planetary transmission.

真正的730工程第一个车体1949年7月30日才完成，车里雅宾斯克在8月9日完成了第二个，两个车体的最后总装被推迟，因为他们要的很多东西还在开发设计生产中。到1949年9月中旬，第一辆原形车依然不得不回收使用旧坦克的发动机和传动系统凑合凑合

Both vehicles were factory-trialed in September 1949, but these trials ended in failure, specifically the transmission proved to be problematic. As a result, it was decided to use a different, 8-gear planetary transmission. Both the 6-gear and the newly designed 8-gear one were tested against one another and the test showed the superiority of the new design. This change (along with several others) were implemented into the Object 730 project by the end of 1949. A new iteration of Object 730 documents appeared in January 1950 with this (and other changes) already implemented.

1949年9月的实验毫无悬念的以失败告终，传动系统是有问题的，最终决定用8齿轮行星传动系统代替，实验表明新设计更加完善可靠。用来更新1949年款730工程的新方案出现在1950年1月，并最终落实成为IS-5项目成果

In March 1950, three more (already improved) prototypes were built and in mid-April 1950, the prototypes underwent series of difficult trials. The results were positive and all three prototypes fulfilled the requirements. The vehicles were judged to be more reliable than other contemporary medium tanks and there was room for modernization as well. More trials followed and in summer 1950, the project was polished and 10 vehicles were built. These were sent to various sites for military trials and despite some shortcomings of the suspension, they again passed them successfully.

1950年的3月建造了3个改进型原形车并在4月进行了一系列困难的场考科目二，这次终于过了。所有三个原形都符合设计要求，并被认为比同时代的中型坦克更为可靠优秀，并且更有现代化改进的余地。更多的实验在1950年的夏天，项目建造了10辆原形车被送往不同地方的部队考科目三。尽管悬挂有点小问题，但还是成功通过

Despite these successes however, the tank was not accepted in service, as by the end of 1950, a new list of requirements for the project was issued by the arty and the ministry of transportation. This new list required a significant overhaul, which would eventually take years to complete and by the end, the vehicle would recieve a new designation, the IS-8. It would eventually be accepted in service as the T-10 in 1953. Even though the Object 730 (IS-5) was not mass-produced, it allowed the development of various modern components, later used for the IS-8 tank.

尽管这些实验成功了，但是这些坦克还是被发了好人卡。1950年年底，好大喜功和刷时髦值刷昏头的主管部门要求又提高了，这个要求得好几年时间才能开发完成，最终诞生了IS-8项目。1953年项目以T-10坦克的型号被部队接收。尽管IS-5项目黄了，但是他开发的很多设计最后都生产应用于IS-8。

In ingame terms, it should be something like IS-8 with stock engine and gun.

在游戏里可能就是个白板IS-8嘛

Source:资料来源

http://topwar.ru/36914-tyazhelyy-tank-is-5-obekt-730-trudnyy-put-k-t-10.html