Su-35S
Specifications
| Designation | Su-35S |
| Also Known As | Flanker-E, Super Flanker |
| Type | 4++ generation air superiority fighter |
| Manufacturer | Sukhoi |
| Operators | Russia; China; Egypt; Iran (ordered) |
| Length | 21.9 m |
| Weight | 19000 kg |
| Wingspan | 15.3 m |
| Range | 3600 km |
| Speed | Mach 2.25 |
| Max Altitude | 18 km |
| Guidance | Irbis-E passive electronically scanned array (PESA) radar with a detection range of up to 400 km, supplemented by infrared search and track (IRST) system. |
| Warhead | Up to 8,000 kg of ordnance on 12 external hardpoints, including air-to-air missiles, air-to-surface missiles, guided bombs, and unguided rockets. |
| Propulsion | Two Saturn AL-41F1S turbofan engines with thrust vectoring nozzles. |
| First Deployed | 2014 |
| Unit Cost | $85 million |
Overview
The Su-35S Flanker-E is Russia's most advanced non-stealth air superiority fighter, representing a significant upgrade over previous Flanker variants. It is characterized by its advanced avionics, powerful radar, thrust-vectoring engines, and heavy payload capacity. Its potential acquisition by Iran is a major concern for regional powers, as it would significantly enhance Iran's air defense and offensive capabilities. The Su-35S is a formidable opponent for most Western fighters, except for dedicated stealth platforms like the F-22 and F-35. Its introduction into the Coalition vs Iran Axis conflict would likely shift the balance of power in the air.
Development History
The Su-35S is a heavily upgraded derivative of the Su-27 Flanker, initially conceived as the Su-27M in the 1980s. Development stalled after the collapse of the Soviet Union but was revived in the early 2000s as a stopgap measure while Russia developed the Su-57 stealth fighter. The first Su-35S prototype flew in 2008, and the aircraft entered service with the Russian Air Force in 2014. Key improvements over the Su-27 include a strengthened airframe, more powerful engines, advanced avionics, and a wider range of weapons. The Su-35S has been continuously upgraded since its introduction, with new software and hardware enhancements being added regularly.
Technical Deep Dive
The Su-35S's core is the Irbis-E PESA radar, capable of detecting targets at ranges up to 400 km and tracking up to 30 targets simultaneously. The radar can engage both air and ground targets. The aircraft also features an OLS-35 infrared search and track (IRST) system for passive target detection. The Su-35S is powered by two Saturn AL-41F1S turbofan engines, producing 142 kN of thrust each. These engines incorporate thrust-vectoring nozzles, allowing for exceptional maneuverability at all speeds. The aircraft's fly-by-wire control system further enhances its agility. The Su-35S has 12 hardpoints for carrying a wide range of air-to-air and air-to-ground weapons, including the R-77, R-27, Kh-31, and Kh-59 missiles. The cockpit features two large multi-function displays (MFDs) and a wide-angle head-up display (HUD).
Combat Record
Tactical Role
The Su-35S is primarily designed for air superiority, tasked with achieving and maintaining control of the airspace. Its long range, powerful radar, and advanced air-to-air missiles make it a formidable opponent for enemy fighters. It can also be used for ground attack missions, carrying a variety of bombs and missiles. In the context of the Coalition vs Iran Axis conflict, the Su-35S would be used to defend Iranian airspace from Coalition aircraft and to project Iranian air power into the region. It would likely be paired with other Iranian air defense systems to create a layered defense.
Strengths & Weaknesses
Variants
| Variant | Differences | Status |
|---|---|---|
| Su-35UB | Two-seat trainer version of the Su-35. Never entered production. | Prototype |
| Su-35BM | Initial modernized version, served as the basis for the Su-35S. Featured improved avionics and engines. | Prototype |
Countermeasures
Adversaries can employ a range of countermeasures against the Su-35S. Stealth aircraft like the F-35 can exploit its large radar cross-section to engage it from beyond visual range. Electronic warfare systems can be used to jam its radar and disrupt its communications. Ground-based air defenses, such as advanced surface-to-air missile (SAM) systems, can pose a significant threat, especially if the Su-35S is operating in a predictable manner. Employing decoys and chaff/flare dispensers can also help to reduce the effectiveness of enemy missiles. Training pilots to employ evasive maneuvers and tactics is crucial for survival in a contested environment.
Frequently Asked Questions
What is the Su-35S Flanker-E?
The Su-35S Flanker-E is a Russian-made 4++ generation air superiority fighter. It's known for its advanced avionics, powerful radar, thrust-vectoring engines, and heavy payload capacity, making it one of Russia's most capable non-stealth combat aircraft.
How does the Su-35 compare to the F-35?
The Su-35 excels in maneuverability and weapons load, while the F-35 prioritizes stealth and sensor fusion. The Su-35 is a formidable opponent in a dogfight, but the F-35's stealth capabilities allow it to engage the Su-35 from beyond visual range in many scenarios.
What countries operate the Su-35?
Currently, the Su-35 is operated by Russia, China, and Egypt. Iran has also ordered the Su-35 and is expected to receive deliveries in the near future. Indonesia previously had a contract for Su-35s, but it was cancelled.
What are the Su-35's strengths and weaknesses?
The Su-35's strengths include its extreme maneuverability, powerful radar, and heavy weapons load. Its weaknesses include its lack of stealth, high maintenance costs, and vulnerability to advanced air defense systems and 5th generation fighters.
Why is Iran buying the Su-35?
Iran's acquisition of the Su-35 is intended to modernize its aging air force and enhance its air defense capabilities. The Su-35 would provide Iran with a significant upgrade in air power, allowing it to better protect its airspace and project power in the region.