Sukhoi Su-57 (NATO designation: Felon) Russian Sukhoi Su-57 taking off at an air show in Zhuhai, Guangdong, China, November 2024. (more) Sukhoi Su-57 Russian aircraft Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/technology/Sukhoi-Su-57 Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article.

　　External Websites Ask the Chatbot a Question Also known as: Felon, Su-57 Written by Written by Joe Coles Joe Coles Fact-checked by Fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors Updated: Sep. 19, 2025 Table of Contents Table of Contents Ask the Chatbot Also called (NATO designation): Felon (Show more) { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type" : "Question", "name" : " What is the Sukhoi Su-57? ", "acceptedAnswer" : { "@type" : "Answer", "text" : "The Sukhoi Su-57, also called Felon, is a single-seat, twin-engine Russian heavyweight multirole combat aircraft developed by the Sukhoi design bureau. It first flew in 2010." } } , { "@type" : "Question", "name" : " What are some key features of the Sukhoi Su-57? ", "acceptedAnswer" : { "@type" : "Answer", "text" : "The Sukhoi Su-57 features a reduced radar cross section, supermaneuverability, a comprehensive defensive suite, and an active electronically scanned array radar system. It is equipped with advanced sensors and countermeasures, including a directed infrared countermeasures (DIRCM) system, and has a versatile armament capability." } } , { "@type" : "Question", "name" : " What is the significance of the PAK FA initiative? ", "acceptedAnswer" : { "@type" : "Answer", "text" : "The PAK FA initiative led to the development of the Sukhoi Su-57 after two Soviet proposals failed. It resulted in a new Sukhoi design with a cropped delta wing and twin tails, marking Russiau2019s most advanced fighter aircraft." } } , { "@type" : "Question", "name" : " What are the engine specifications and upgrades for the Sukhoi Su-57? ", "acceptedAnswer" : { "@type" : "Answer", "text" : "The Sukhoi Su-57 is powered by two AL-41F turbofan engines, which are planned to be replaced with the more modern AL-51F1. It features 2.5D thrust vectoring nozzles for extreme maneuvers." } } , { "@type" : "Question", "name" : " What is the operational history of the Sukhoi Su-57? ", "acceptedAnswer" : { "@type" : "Answer", "text" : "By 2025, about 30 production Sukhoi Su-57 aircraft had been delivered to the Russian Aerospace Forces, with a desire for a total of 76. Its use in combat has been limited, with some operational testing in Syria and limited action in Ukraine." } } ] } Top Questions What is the Sukhoi Su-57? The Sukhoi Su-57, also called Felon, is a single-seat, twin-engine Russian heavyweight multirole combat aircraft developed by the Sukhoi design bureau. It first flew in 2010.

　　What are some key features of the Sukhoi Su-57? The Sukhoi Su-57 features a reduced radar cross section, supermaneuverability, a comprehensive defensive suite, and an active electronically scanned array radar system. It is equipped with advanced sensors and countermeasures, including a directed infrared countermeasures (DIRCM) system, and has a versatile armament capability.

　　What is the significance of the PAK FA initiative? The PAK FA initiative led to the development of the Sukhoi Su-57 after two Soviet proposals failed. It resulted in a new Sukhoi design with a cropped delta wing and twin tails, marking Russia’s most advanced fighter aircraft.

　　What are the engine specifications and upgrades for the Sukhoi Su-57? The Sukhoi Su-57 is powered by two AL-41F turbofan engines, which are planned to be replaced with the more modern AL-51F1. It features 2.5D thrust vectoring nozzles for extreme maneuvers.

　　What is the operational history of the Sukhoi Su-57? By 2025, about 30 production Sukhoi Su-57 aircraft had been delivered to the Russian Aerospace Forces, with a desire for a total of 76. Its use in combat has been limited, with some operational testing in Syria and limited action in Ukraine.

　　Sukhoi Su-57, single-seat, twin-engine Russian heavyweight multirole combat aircraft that first flew in 2010. It was developed by the Sukhoi design bureau, creator of the Flanker series, a line of aircraft that serves as the backbone of the Russian Aerospace Forces (VKS). The maximum takeoff weight of the Su-57 “Felon” is about 35 metric tons, and the top speed is Mach 2. Though the Su-57 is sometimes described as a “fifth generation” fighter, the generational terms used for fighter aircraft are somewhat vague. The Su-57 was developed after two (initially Soviet) proposals for new-generation fighters failed to reach the production ...(100 of 1025 words)

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