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Russia Tests New Engine on Su-57 Fighter Jet

Russia Tests New Engine on Su-57 Fighter Jet Amid Global Scrutiny
Russia’s state defense conglomerate Rostec has announced a significant milestone in the development of its Su-57 Felon fifth-generation fighter jet, revealing that the aircraft has completed its first flight powered by a new engine, designated “izdeliye 177.” This advancement represents a crucial step in the modernization of Russia’s tactical aviation capabilities.
Enhanced Performance and Technological Advances
The newly tested engine reportedly delivers a maximum afterburner thrust of 16,000 kilogram-force, while also offering improved fuel efficiency and an extended service life compared to its predecessors. The flight testing program is being conducted by the United Aircraft Corporation and United Engine Corporation, both subsidiaries of Rostec, as part of the Su-57’s broader fifth-generation aviation complex development. Rostec confirmed that the inaugural flight proceeded according to plan and successfully met all assigned objectives.
Rostec attributes the engine’s enhanced performance to the integration of new technologies, advanced materials, and innovative design solutions. These improvements have resulted in a powerplant with superior technical characteristics relative to earlier engine models. The Su-57 itself is described by Russian officials as a multirole fighter capable of engaging aerial, ground, and maritime targets under diverse operational conditions, including adverse weather and complex electronic warfare environments. Its stealth features are designed to increase survivability against modern air defense systems.
According to Rostec, the Su-57 has demonstrated effective performance in real combat scenarios, confirming its compliance with the stringent requirements of fifth-generation aviation complexes, particularly in terms of stealth capabilities. The company also highlighted ongoing modernization efforts informed by operational experience, especially from deployments in the Special Military Operation (SVO) zone, which have led to upgrades in weapons systems and onboard technologies. The introduction of the “izdeliye 177” engine is expected to further enhance the aircraft’s flight performance and serve as a foundation for future development.
Challenges and International Implications
Despite these advancements, the Su-57 program faces significant challenges. International sanctions and export restrictions imposed on Russia threaten to limit access to critical advanced technologies and materials necessary for the continued development and production of the new engine. These constraints could slow the pace of testing, certification, and eventual mass production of the “izdeliye 177” engine variant.
The global defense community is closely observing Russia’s progress with the Su-57. The aircraft’s technological advancements have attracted increased scrutiny from Western defense contractors and may prompt competitor nations, including the United States and China, to accelerate their own development of next-generation fighter technologies. This competitive dynamic has the potential to influence the global balance of military capabilities and drive further innovation within the sector.
Despite these obstacles, Rostec asserts that export deliveries of the Su-57 are already underway and that international interest in the aircraft remains robust. While the company has not provided a specific timeline for the certification or mass production of the “izdeliye 177” engine, it emphasized that flight testing will continue as part of the ongoing evolution of the Su-57 platform.

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