Su-57 vs. F-35: The Contradiction of Stealth vs. Kinematics I. The Philosophical Divide Before comparing thrust-to-weight ratios or radar cross-sections (RCS), one must understand what each nation asked the jet to do.
The F-35 Lightning II (USA): Designed as a multi-role battlefield quarterback . It prioritizes sensor fusion, low observability (stealth), and network-centric warfare over raw speed or agility. The assumption is: If the enemy can’t see you, you don’t need to turn hard. The Su-57 Felon (Russia): Designed as an air superiority fighter with strike capability . Russian doctrine never fully embraced stealth as the primary survival tool. Instead, the Su-57 relies on supermaneuverability, long-range missiles, and high-speed interception. The assumption is: Stealth degrades over time; agility and kinematics are permanent.
Bottom Line: The F-35 wants to kill you before you know it exists. The Su-57 wants to kill you in a chaotic, close-in brawl if stealth fails.
II. Stealth: The Unmatched American Advantage This is the most lopsided category. su 57 protiv f 35
F-35: Estimated frontal RCS of 0.001–0.005 m² (about the size of a marble). It uses advanced RAM coatings, serpentine engine ducts (hiding the fan blades), and S-shaped intakes. The F-35 is stealthy from all aspects, though least from the rear. Su-57: Estimated frontal RCS of 0.1–1.0 m² (size of a small bird to a beach ball). Critics point to:
Straight engine ducts: You can see the engine fan blades from the front – a massive radar reflector. Protruding sensors: The 101KS “DIRCM” turrets and infrared search-and-track (IRST) balls break stealth. Exposed weapon bay doors: Gaps and hinges create radar returns. Lack of advanced RAM: Russia’s materials science lags behind the US; coatings are heavier, less durable, and less effective.
Verdict: The F-35 will detect and track the Su-57 from 150–200 km away. The Su-57 will detect the F-35 at 40–60 km (if lucky). That is a kill chain disparity of 3–4x. Su-57 vs
III. Kinematics & Maneuverability: The Russian Edge If the fight gets close, the Su-57 dominates. | Feature | F-35 | Su-57 | | :--- | :--- | :--- | | Engine | F135-PW-100 (43,000 lbf) | izdeliye 30 (prototype) / AL-41F1 (current) ~40,000 lbf each | | Thrust/Weight | ~0.87 (combat load) | ~1.02–1.10 (superb) | | Top Speed | Mach 1.6 (limited by intake heating) | Mach 2.0+ (clean) | | Supercruise | No (afterburner needed for Mach 1.2) | Yes (Mach 1.3–1.5 without afterburner) | | Turn Rate | ~28°/s sustained | ~35°/s sustained | | AoA Capability | 50° (with care) | 120°+ (with thrust vectoring) | | Thrust Vectoring | No | Yes (3D nozzles on izd. 30) | Su-57 Advantages:
Supermaneuverability: Can perform Pugachev’s Cobra, flat spins, and thrust-vectoring turns that bleed speed but change direction instantly. This is lethal in a guns or short-range IR missile merge. Energy retention: High top speed allows zoom-climb and hit-and-run tactics. IRST: The Su-57’s 101KS-V passive sensor can track the F-35’s heat signature (even stealth jets produce heat) without emitting radar.
F-35 Counter: The F-35 pilot will never accept a close-in fight. With AIM-120D (160km range) and AIM-9X Block II/III (high off-boresight), the F-35 launches from beyond visual range (BVR), then turns cold (runs away). If the Su-57 survives to WVR (within visual range), the F-35 uses high-angle off-boresight shots from its helmet-mounted display—no need to out-turn. The assumption is: If the enemy can’t see
IV. Sensors & Avionics: The F-35’s Matrix The F-35 has the most advanced sensor fusion in existence.
AN/APG-81 AESA radar: Not just for search—can perform electronic attack, low-probability-of-intercept (LPI) tracking, and synthetic aperture radar (SAR) mapping. AN/AAQ-37 Distributed Aperture System (DAS): 6 infrared cameras giving 360° spherical awareness. Can see a missile launch from below the jet. AN/ASQ-239 Barracuda: Passive electronic warfare system that can geolocate emitters (like Su-57’s radar) without the Su-57 knowing it’s been tagged. Helmet Mounted Display (HMDS): Pilot can “look through” the floor of the jet to see targets below.