Stealth Death Match: America's F-22 Raptor vs. Russia's Su-57 (Who Wins?)
Ultimately, the outcome of a Raptor versus Su-57 is an unknown. And it will likely remain an unknown for the foreseeable future. Here's why.
The Russians are hoping the Su-57 sensor suite—which includes N036L-1-01 L-band radar arrays—will alert its pilots to the general vicinity of enemy fifth-generation stealth fighters such as the Raptor. Tactical fighter-sized stealth aircraft must be optimized to defeat higher-frequency bands such the C, X and Ku bands as a matter of physics. Those aircraft show up on radar operating at longer frequency wavelengths such the L-band, however, the track is not precise enough to engage a target with a missile.
The Lockheed Martin F-22 Raptor is the king of skies—it combines stealth and eye-watering kinematic performance with a power array of sensors weapons. For over a decade since the Raptor was declared operational in December 2005, the F-22 has been unquestionably the best air superiority fighter ever built.
But challengers are starting to appear. After emerging from its post-Soviet doldrums, Russia has developed a challenger to the mighty F-22 in the form of the Sukhoi Su-57 PAK-FA, which is scheduled to enter limited service in 2019. But does the Su-57 represent a genuine challenge to the Raptor?
Right now, the answer is no—the initial interim operational test versions of the Su-57 are powered by modified versions of the Su-35S Flanker-E’s engines called the AL-41F1, which produce about 33,000 pounds of thrust. The engine, which runs far hotter than the original AL-31 engines from which they were originally derived, is not proving to be as reliable as initially hoped. But the current engines are only temporary; a second stage version of the PAK-FA is expected to be powered by a new engine called the izdeliye 30, which should enter service in the mid-2020s. The new engine should produce roughly 42,000lbs of thrust, and—from an aerodynamic point of view—put the Su-57 on top, particularly when combined with the aircraft 3D thrust vectoring.
目前来看，答案是否定的。苏-57的初始中期运行测试版本采用苏- 35s Flanker-E的改良版发动机AL-41F1提供动力，该发动机能产生约3.3万磅的推力。这款发动机的运行温度远高于其初始版版AL-31，但事实证明，它并不像最初希望的那样可靠。但目前的发动机只是暂时的，PAK-FA的第二阶段版本预计将由新引擎izdeliye 30提供动力，该发动机将在2020年中期投入使用，能产生大约4.2万磅的推力，并且从空气动力学的角度来看，新动力配合苏-57的3D推力矢量会得到比较好的高机动性能。
However, kinematic performance is not everything—even if the Su-57 might slightly edge out the Raptor once it receives its new engines. The F-22 will continue to retain the edge in terms of stealth over the Su-57, which only has a modest degree of radar cross-section reduction measures. Theoretically, with its powerful AN/APG-77 (V)1 active electronically scanned array radar, the F-22 would be able to see the Su-57 first and shoot it down with an AIM-120D AMRAAM or follow-on missile design before the Russian jet would even know it is under attack.
然而，机动性表现好并非万能。即使苏-57配备新引擎后，机动性可能略微超过猛禽。在隐形方面，F-22将继续保持对苏-57的优势，苏-57只有适度的雷达横截面减少措施。从理论上讲，凭借强大的AN / APG-77（V）1有源电子扫描阵列雷达，F-22将能先看到Su-57并用AIM-120D AMRAAM或改进型导弹将其击落，Su-57甚至不知道自己受到攻击。
However, that is in theory—a theory that has never been put to the test. Russia has advanced electronic warfare capabilities—and its fighters are equipped with digital radio frequency memory (DRFM) jammers that can blind the AMRAAM’s active radar seeker. Moreover, while the Su-57 does incorporate some degree of forward sector radar cross section reduction, Moscow does not believe in stealth as a standalone survivability tool. The Russians prefer to use tried and true techniques such a beaming—or exploiting a pulse Doppler radar’s clutter notch to essentially disappear from enemy radar by turning 90 degrees to the direction of the enemy radar. That essentially makes the Su-57 appear as a stationary object relative to the enemy radar and is thus filtered out (pulse Doppler radar have a very difficult time with objects moving side to side). This is simply a matter of physics, there is very little an enemy can do to counter it except to adopt additional sensors—such as infrared search and track—and improve signal processing.
However, the L-band radar—part of the N036 Byelka radar suite—narrows the search area down so that the Su-57 can scan a smaller volume of space with its X-band N036-1-01 and N036B-1-01 active electronically scanned array apertures. The radar is further augmented with the 101KS Atoll electro-optical targeting system and the L402 Himalayas electronic countermeasure suite, which would help further refine a track from the L-band radar. The idea is that a focused search by the jet’s other sensors would result in a weapons quality track to engage a fifth-generation fighter such as a F-22. If the technique works, the Russians will have negated the Raptor’s stealth.
然而，N036 Byelka雷达套件的L波段雷达部分缩小了搜索范围，因此苏-57可以利用有源电子扫描阵列孔径雷达的X波段N036-1-01和N036B-1-01扫描更小的物体。该雷达进一步增加了101KS Atoll电光瞄准系统和L402喜马拉雅电子对抗套件的能力，这将有助于进一步完善L波段雷达的轨迹。其构想是，该战机的其他传感器集中搜索，有效追踪，从而与F-22等第五代战机交战。如果这项技术奏效，俄罗斯人将抹杀猛禽的隐身能力。
That means that if that whomever survives the beyond visual range engagement can meet in a visual dogfight. By the mid-2020s, both the Su-57 and the F-22 will be equipped with a helmet mounted cueing system (HMCS) and highly capable high-off boresight (HOBS) air-to-air missiles, which basically allows the pilot to shoot in the direction he is looking. In the visual arena, victory will come down which aircraft is flown by the better pilots—and frankly luck. In training exercises between aircraft equipped with the AIM-9X and a HMCS, it has been demonstrated over and over again that when both jets are equipped with HOBS missiles, it often comes down to a “mutual kill.” Luck could be the determining factor.
Ultimately, the outcome of a Raptor versus Su-57 is an unknown. And it will likely remain an unknown for the foreseeable future.
译文来源：三泰虎 http://www.santaihu.com/46601.html 译者：Jessica.Wu
Bleekah12 hours ago
The Raptor will out perform the SU-57. Tue Raptor is also battle proven. It's reliable.
John12 hours ago
L Band Radar uses longer wavelengths which is not precise enough to guide a missile
Shane12 hours ago
Hands down, the F22 wins because we've been developing and training with the aircraft for almost 2 decades
Mreta11 hours ago
Considering the Sukhoi is a prototype whose production has been ceased, I'm going with our squadron of Raptors.
CRAIG12 hours ago
No contest, the Su 57 is not a true stealth aircraft, not a true "5th generation" aircraft, but basically a very up graded 4th gen aircraft.
Eric11 hours ago
Russians say the new engine will be ready in the mid-2020's. We'll see about that. India withdrew from their joint development on the Su57, because of the poor engine, but also because of the wing design. Instead they bought French Raphael jets. In the meantime, Russia can't afford to develop, not to mention produce meaningful numbers of these jets. Look how much time & money it took the US to get the F35 into production. Now we're producing hundreds, and routinely getting contracts for more. Russia simply does not have adequate financial resources.
William12 hours ago
Raptor wins. In most scenarios the Russian plane will be grounded for maintenance.
George12 hours ago
Russia technology is far far behind Western technology. End of story
John12 hours ago
well the SU-57 isnt really stealth soo... different planes for different uses
Stanley10 hours ago
The Raptor is proven and will beat the SU-57 hands down.
F12 hours ago
A fighter is only as good as the pilot. As of now f22 wins hands down in the hands of a good pilot.
Scott12 hours ago
F22 has been one of the best planes ever built, end of story. Should have not been canceled. Obama wanted to save some money for the F35.
yogajitsu12 hours ago
let's see the US spends 600 billion on defense and Russia spends 50 billion a year.
JRobert12 hours ago
"Ultimately, the outcome of a Raptor versus Su-57 is an unknown. And it will likely remain an unknown for the foreseeable future."
The first sentence saved me the trouble of reading the entire article.
J12 hours ago
Lets not forget to thank Jimmy Carter who announced stealth techology to the world!
Richie5 hours ago
I don't even need to read this story to say the Raptor wins hands down at distance. American pilots are battle proven, so is the F-22. The SU-57 is not. In fact it is not battle tested. The stealth no proven. It is more of a demo aircraft than actual battle platform with only a handful made, and NO one wants to buy one.