Russian Stealth Fighter Modernization: Su-57 Production Accelerates While Su-75 Checkmate Eyes 2027 Export Launch
As of July 28, 2026, the Russian Aerospace Forces (VKS) have reached a pivotal juncture in their fifth-generation aviation roadmap. The Sukhoi Su-57 Felon has transitioned from low-rate initial production to a steady serial manufacturing rhythm, with the Ministry of Defense confirming that the fleet size has officially surpassed the 45-unit milestone this summer. Simultaneously, the Su-75 Checkmate, Russia’s ambitious light tactical stealth aircraft, has entered a critical new phase of high-speed taxi tests and sub-system integration trials at the Gromov Flight Research Institute.
| Feature | Su-57 (Felon) Status | Su-75 (Checkmate) Status |
|---|---|---|
| Current Operational Phase | Active Service / Combat Ready | Advanced Prototype Testing |
| Engine Configuration | Twin-Engine (Izdeliye 30 integration) | Single-Engine (AL-41F1 Derivative) |
| Stealth Classification | Heavy Multi-role Stealth | Light Tactical Stealth |
| Key 2026 Milestone | Full S-70 Okhotnik Drone Pairing | Avionics and Radar Finalization |
| Primary Role | Air Superiority & Precision Strike | Export-Oriented Multi-role |
Context & Background: The Evolution of the PAK FA Legacy
The journey of the Russian stealth fighter program began with the PAK FA (Prospective Airborne Complex of Frontline Aviation) project, which eventually birthed the Su-57. For years, the program faced skepticism regarding its "true stealth" capabilities and engine reliability. However, by early 2026, the transition to the "second-stage" engine, known as the Izdeliye 30, has largely been completed for new production units. This power plant provides the Su-57 with a genuine supercruise capability and improved infrared masking, addressing long-standing criticisms from Western defense analysts.
In contrast, the Su-75 Checkmate was unveiled in 2021 as a cost-effective alternative to the American F-35, specifically designed for the export market. Throughout 2025 and the first half of 2026, United Aircraft Corporation (UAC) has focused on modularity, allowing potential international partners—primarily in the Middle East and Southeast Asia—to customize the avionics suite. The 2026 development cycle has prioritized the aircraft’s "glass cockpit" and AI-driven pilot assistance systems, which are designed to reduce the cognitive load during complex dogfights or SEAD (Suppression of Enemy Air Defenses) missions.
Impact & Utility: Strategic Shifts and the Drone Wingman Concept
The deployment of the Russian stealth fighter fleet is fundamentally altering the tactical landscape of Eastern Europe and the Arctic. The Su-57’s primary utility in 2026 is its role as a "quarterback" for unmanned systems. The integration of the S-70 Okhotnik-B (Hunter) heavy combat drone has reached operational status this month. This "Loyal Wingman" configuration allows the Su-57 to remain undetected at stand-off distances while the Okhotnik penetrates high-threat zones to designate targets or deliver precision munitions.
Key technological impacts include:
- AESA Radar Dominance: The N036 Byelka radar system now features enhanced electronic warfare (EW) modules, capable of disrupting localized sensor networks.
- Internal Weapons Bay Capacity: Recent modifications have allowed for the carriage of the "miniaturized" hypersonic missiles, specifically designed for stealthy internal carriage.
- RCS Reduction: Continuous improvements in radar-absorbent material (RAM) coatings applied during the 2026 production run have marginally reduced the Su-57’s radar cross-section, narrowing the gap with its Western counterparts.
Su-57 fighter jet Russian Air force | Defence Forum & Military Photos ...
What's Next: Procurement Goals and Export Potential
Looking ahead to the remainder of 2026, the Russian Ministry of Defense aims to take delivery of another 12 Su-57 units by December 31st. This push is part of the broader State Armament Program which envisions a total fleet of 76 aircraft by the end of 2028. The VKS is also expected to begin testing a carrier-based variant of the Su-57 to replace the aging Su-33 and MiG-29K fleets, though official timelines remain classified.
For the Su-75 Checkmate, the focus for the fourth quarter of 2026 will be the commencement of full-scale flight testing involving multiple prototypes. If these trials meet performance benchmarks, the aircraft will move toward the "pre-series" production phase in early 2027. Geopolitically, the success of the Checkmate depends on securing a major foreign launch customer. Current diplomatic efforts are concentrated on the BRICS+ economic bloc, where several nations are seeking fifth-generation capabilities without the political strings often attached to Western military hardware.
