能否对比分析俄罗斯的苏-57、中国的歼-20和美国的F-22战斗机？您认为哪款战机性能最为优越？

Xb Liu
You probably don't know that the J20 has developed multiple variants. The latest model is the J20S, which is the only dual-seat fifth-generation fighter aircraft in the world. So, what do you think? When one pilot is in charge of operating the aircraft, what is the purpose of the other pilot? It can't possibly be an intern pilot, right? They would have to be sitting in the back for training purposes.
你大概不知道歼-20 已经发展出多种型号。最新款是歼-20S，它是世界上唯一的双座第五代战机。那么，你觉得呢？既然前座飞行员负责操纵飞机，后座飞行员的作用是什么？不可能只是实习飞行员，对吧？他们坐在后面肯定不是为了训练。

The second pilot was specifically responsible for controlling. What was being controlled? At that time, it was the accompanying unmanned aircraft. Imagine this: beside a J20S, there were six unmanned aircraft. If an F22 or Su-57 saw this, wouldn't they feel hopeless? Multiple unmanned aircraft could advance forward, creating electromagnetic interference, attracting firepower, and guiding missiles. Maybe when the F22 was hit, the J20S had already flown 400 kilometers away.
后座飞行员专门负责“指挥控制”。控制什么？当时他们在指挥伴飞的无人机。想象一下：一架歼-20S 旁边跟着六架无人机。如果 F-22 或蘇-57 遇到这种场面，岂不是绝望？多架无人机可向前铺展开，干扰电子设备、吸引火力、并为导弹引导。或许当 F-22 中弹时，歼-20S 已经飞走了 400 公里。

China can use extremely low-cost drones to engage in a battle of attrition against you. Do you think the US fifth-generation fighter jets can compete in this kind of attrition battle and have they ever faced the Chinese J20S?
中国可以利用成本极低的无人机，对你进行消耗战。你认为美国的第五代战机能在这种消耗战中抗衡吗？它们曾经与中国的歼-20S 交手过吗？

This is the gap!!!
这就是差距！！！


Steve Lussing
“Jet fighter” is a generic term, when in fact these planes, all planes, are each built for a specific task.
“喷气式战斗机”只是一个笼统称谓，实际上每一种飞机都是针对特定任务而研制的。

The F-22 Raptor is a stealthy air-to-air superiority fighter. It is specifically designed to escort and provide protection for the F-35, also a purpose built plane, designed to be a stealthy bomb truck. Countries buying F-35’s are stuck with a plane only good for one thing, to deliver heavy ordinance to the enemy. Stealth is its only redeeming feature. The US won't export the F-22.
F-22 猛禽是隐身制空型战斗机，专门用于护航并保护同属目的机型——隐身轰炸机 F-35。购买 F-35 的国家只能用它来投放重型炸弹，隐身是它唯一的亮点。美国不会出口 F-22。

The J-20 is a long range stealthy aircraft carrier killer, capable of carrying the type of ordinance required for that job. It's combat range is more than twice that of the F-22, necessary to provide coverage of a good part of the South China Sea. It has a couple of powerplants that take it to an altitude of 60,000 feet in one minute with a very good thrust-to-weight ratio.
J-20是一款具备远程隐身能力的"航母杀手"，可携带执行此类任务所需的特种弹药。其作战半径超过F-22的两倍以上，这一优势使其能够有效覆盖南海大部分海域。该战机配备的动力系统使其仅需一分钟即可爬升至6万英尺（约1.8万米）高度，展现出卓越的推重比性能。

The SU-57 is a multi-role stealthy air superiority fighter and ordinance delivery system. It adds about five feet to the F-22 and is about five feet short of a J-20. It also has a much greater combat range than the F-22, comparable to the J-20's.
苏-57 是多用途隐身制空战机兼武器投放平台。它机长比 F-22 长约五英尺，比歼-20 短约五英尺。它的作战半径远超 F-22，可与歼-20 相媲美。

How can they be compared? We don't know enough about the SU-57, they've only been around for a few years and only 22 have thus far been delivered. That there were ten preliminary test-beds and prototypes points to a significant amount of research and development.
如何进行比较？我们对苏-57 了解甚少，该机型服役仅数年，目前仅交付 22 架。光是十多个试验平台和原型机就说明了其研发投入之巨大。

I wouldn't write off any of these planes. It appears that China and Russia may have co-operated in jet engine design, as the Russians have built some formidable powerplants for their fighters over the years, and the J-20 has reportedly impressed US air force pilots on their infrequent encounters with the plane.
我不会轻易否定任何一种机型。中国和俄罗斯似乎在发动机设计上有合作，毕竟俄罗斯这些年来为战机打造过多款强力动力装置。歼-20 在美国空军飞行员的少数实际接触中，也曾留下深刻印象。

Out of the three, though, I think that the J-20 probably represents the most significant threat. It can take out $13 billion worth of asset on a single mission.
在这三款机型中，我认为歼-20 威胁最大。一架歼-20 就能在一次任务中摧毁价值 130 亿美元的目标资产。


Something There
Of all the given aircraft I personally feel the F22 is superior but all I can say is that we cant tell which one is superior until they get into actual combat with each other. I can predict that the F22 would win though. To compare them all I will do so without letting opinion cloud my judgement. the SU57 development began in 2001, the J20 development started in 2008 and the F22 program started in the 1980s and was put into service in 2003. All three aircraft are meant to be the culmination of all the technology that each respective country has for air superiority and other tasks. The SU57 was first introduced in 2020 and the J20 was introduced in 2016. The f22 has had more service time and upxes while the J20 and SU57 haven’t been upxed yet since the management of those programs doesnt have the funds nor the consideration that upxes are necessary to keep an edge. The f22 and j20 are oriented around air superiority while the SU57 is more multi-role and because of this isnt as capable at air to air so that it can accommodate more functions. The J20 likely could contend very well against the F22 but since the capabilities of all three aircraft are currently unknown there is no way to effectively determine the best one.
在所有这些战机中，我个人认为 F-22 更胜一筹，但只有交战时才能确定谁更强。不过我预测 F-22 会胜出。比较它们时，我会摒弃主观。苏-57 于 2001 年立项，歼-20 于 2008 年启动，而 F-22 计划始于上世纪 80 年代，2003 年服役。这三款飞机都是各自国家制空与其他任务技术的集大成者。苏-57 首飞于 2020 年，歼-20 则在 2016 年亮相。F-22 服役时间更长，也多次升级，而歼-20 和苏-57 项目管理方既缺乏资金，也未认为升级必要，所以尚未进行。F-22 和歼-20 聚焦制空，苏-57 则更偏向多用途，因此空战能力相对稍弱。歼-20 很可能能与 F-22 媲美，但由于三者的真实作战能力尚不明朗，无法断言谁最强。


Rodger Felker
There are a few things to consider here.
有几点要考虑。

1.The Su-57 has not entered mass production there are approximately. 19 Airfrx for testing purposes. The J-20 and F-22 went to production.
苏-57 尚未进入量产，目前仅有约 19 架原型机用于测试。歼-20 和 F-22 已大规模生产。

2.The F-22 has superior stealth abilities to both aircraft it's being compared to. The SU-57 is about as stealthy as an F-18 hornet and the J-20 lags behind the F-22 significantly.
F-22 的隐身性能远超另外两款战机。苏-57 的隐身水平与 F-18 大黄蜂相当，歼-20 则明显落后于 F-22。

3.The F-22 is incredibly maneuverable making it an excellent dog fighter, the SU-57 does great here but none have entered 4.regular service or production so it's not relevant.
F-22 机动性极佳，是顶级格斗机；苏-57 在这方面表现也不错，但尚未服役或量产，故无可比性。

It's not a matter of thinking which one is superior, the F-22 is known to be superior.
这不是什么“孰优孰劣”的问题，F-22 的领先地位已是公认。

Dominik Schachtsiek
While the J-20 is a far “newer” aircraft, it doesn’t have anything on the Raptor.
虽然歼-20 是“较新”的机型，但在猛禽面前毫无优势。

The J-20 was pretty much the first fully domestically developed jet in modern times. All other jets have been “modded” and reverse engineered airfrxs from other origins (mostly Russia - but the J-10 seems to be very much a modified Lavii).
歼-20 几乎是现代第一款完全国产化开发的战机。其他战机或多或少都借鉴并“倒模”自其他机型（多来自俄罗斯——但歼-10 看起来就像改进版的 Su-27）。

Also China over the longest time relied on Russias engine design, avionics etc. Now they are pushing their very own defensive industry, however it simply takes time and experience to reach a real good level.
长期以来，中国在发动机设计、航电等方面依赖俄罗斯。如今虽在大力发展本土防务产业，但要达到真正成熟的水平仍需时间与经验。

And a 5th generation jet is basically the Mount Everest under all weapon systems. It is the most complex, the most demanding project.
第五代战斗机堪称所有武器系统中的珠穆朗玛峰，是最复杂、最苛刻的项目。

Also: semi conductors and stealth.
另外：半导体与隐身技术。

Especially high performing custom made semi conductors are in a weird monopoly - the design is based on 2 American software firms, the production of the producing machine is in the hand of 1 Dutch company and the production is by 85% in the hand of Taiwanese companies (with few in the US and probably EU).
尤其是高性能定制半导体存在怪异垄断——设计依赖两家美国软件公司，生产设备由一家荷兰公司掌控，制造则 85% 在台湾（地区）企业手中（其余少量在美国及欧盟）。

This type of high tech is sanctioned - and China doesn’t get their hands on semi conductors which are on the level, which could built a system which could beat the admittedly aging capabilities of the F-22 (which is though to be upgraded in the next years).
此类高端技术受制裁——中国难以获取同等水平的半导体，而这些半导体本可支撑超越 F-22（虽老旧但即将升级）能力的系统。

Stealth: it is still a book with 7 seals. It seems that only the US could “break” the threshold for VLO designs.
隐身技术：仍是一部未解之谜。看来只有美国能真正攻克超低可见度（VLO）设计。

So while the F-22 is far older than the J-20, it has been basically on the same level of a “X-Wing” - when it was produced it was total Sci-Fi. The US spent a fortune into its capabilities - and at this point, China hasn’t been able to meet those capabilities.
因此，尽管 F-22 比歼-20 年代久远，它面世时就如同科幻中的“X翼战机”。美国为其性能投入天文数字，而中国至今尚未能匹配这些能力。