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China’s J-35A vs. Russia’s Su-57 Felon: Who Wins a 5th-Gen Dogfight?
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A direct comparison between Russia’s Su-57 “Felon” and China’s new J-35A reveals a clash of philosophies: raw kinetic performance vs. modern stealth optimization.
-The Su-57 Advantage: Dominated by maneuverability (thrust vectoring), speed (Mach 2+) & sensor coverage (cheek/tail radars), making it a lethal dogfighter.
-The J-35A Advantage: Prioritizes stealth with an RCS under 0.05 m², diverterless intakes & advanced networking to win the “first look, first shot” battle.
-The Verdict: While the J-35A is the better stealth platform, the Su-57’s versatility, electronic warfare suite & long-range R-37M missiles make it the “likelier victor” in a 1-on-1 engagement.
The J-35A Is Stealthier, But the Su-57 Has 1 Huge Advantage It Can’t Ignore
For decades, the USA held a monopoly on stealth aircraft. It lost that monopoly in recent years, as Russia & China fielded 5th-generation fighters of their own. Russia has its Su-57 fighter.
China recently entered its newest J-35 into service, marking its 2nd operational stealth fighter.
While much ink has been spilled comparing these fighters to their U.S. rivals, they are far less often compared against each other.
The Su-57 Felon vs. the J-35A
The Su-57 “Felon,” was developed by Russia under the PAK-FA program as a 5th-generation multi-role fighter. It is a large aircraft, measuring about 20 meters in length with a wingspan of 14 meters. It is powered by 2 AL-41F1 turbofan engines, with future variants expected to use the more advanced Izdeliye 30 engine.
The Su-57 can reach speeds exceeding Mach 2 and currently supercruises at about Mach 1.3, with projections of Mach 1.6–1.8 once the new engines are integrated. Its range is approximately 3,500 kilometers, making it suitable for long-range missions.
While stealth was a design consideration, the Su-57 does not achieve the same low radar cross-section as Western or Chinese counterparts.
In contrast, the Shenyang J-35A, which entered service with the Chinese People’s Liberation Army Air Force in 2025, is a smaller & lighter aircraft, measuring about 17 meters in length with a wingspan of 11.5 meteres
It is powered by twin WS-19 engines & can reach speeds of Mach 1.8, with a combat radius estimated between 1,200 & 1,500 kilometers. The J-35A emphasizes stealth far more than the Su-57, incorporating diverterless supersonic intakes & radar-absorbent materials in a design heavily influenced by the F-35.
Its radar cross-section (RCS) is believed to measure less than 0.05 square meters from the front aspect, making it significantly harder to detect than the Su-57.
Avionics & Engine Performance
The Su-57 is equipped with formidable avionics. Its N036 Byelka radar system uses multiple Active Electronically Scanned Arrays (AESA) positioned on the nose, cheeks & tail, providing wide coverage, and even L-band capability for detecting stealth aircraft. Complementing this is the 101KS Atoll electro-optical targeting system and the L402 Himalayas Electronic Warfare (EW) suite, which enhances survivability and situational awareness.
The J-35, according to some reports, is fitted with a KLJ-7A AESA radar, which has a range of about 150 kilometers when scanning for targets with a larger RCS. It also features a distributed aperture system, optical early-warning system, & an electro-optical targeting system.
The Su-57 is best known for its insane maneuverability, enabled by two-dimensional thrust vectoring (often mistaken for 3D thrust vectoring) and a high thrust-to-weight ratio, which makes it exceptionally capable in dogfights.
Unlike the Su-57, the J-35A does not feature thrust vectoring and prioritizes stealth and electronic sophistication over raw maneuverability. Its design philosophy suggests that China expects these fighters to avoid close-in dogfights and instead rely on first-shot advantage and coordinated attacks within a broader networked system.
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