The Sukhoi Su-57 Felon was the Russian project to build a top-of-the-line stealth fighter of the fifth generation — a vehicle that contained a lot of sophisticated technology that should have brought Russian aerospace back into the headlines and competed against America’s best and most intelligent fighter aircraft, such as the F-22 and F-35. However, things have not been going great for the aircraft. Rather than achieving amazing success, the Su-57 has stumbled over delays, manufacturing issues, and uncertainties concerning its place in the rapidly changing military world.
The Su-57 project was started as early as the 2000s under the PAK FA program. It was to create a multi-role fighter that would dominate the air, attack targets on the ground, and perform reconnaissance. It featured stealth technology, a lot of lightweight composite materials, hidden armament bays, and cutting-edge avionics.
The plane was designed to be incredibly maneuverable in the air, with smart systems onboard — some went so far as calling the flight computer an “electronic co-pilot” — and radar spread all across the airframe to watch out for threats coming in from all angles.
Artificial intelligence was built into its communication and data systems so that pilots could get ahead of their competition and make fast decisions under difficult conditions. Russia’s state producers asserted that the technology made it possible for the plane to send encrypted information at high rates, helping to increase reconnaissance and combat effectiveness.
On paper, the Su-57 is impressive. It has a top speed of twice the speed of sound, a range of over 2,000 miles, and can accommodate hypersonic missiles and precise smart weapons. Its sensors can track multiple targets at once, and its artificial intelligence can learn from mission results to be a more effective tactician and help maintain the plane out of harm’s way. Its slender, angled shape with radar-absorbing materials and engines concealed within is intended to make it invisible to enemy radar, especially head-on.
But in reality, it has not been smooth sailing. Sanctions from the West have bitten Russia, keeping it from accessing key components like cutting-edge electronics and special materials employed in order to attain stealth. The Su-57’s radar, which was initially built based on German technology, is most affected. Efforts to replace these components with imports from other countries have not been straightforward, and there is doubt about the availability of these alternatives.
Because of these problems, very few Su-57s are operational. By late 2024, only about 22 had been delivered, including test and production models. Official targets for attaining higher numbers in subsequent years now seem unrealistic. Every Su-57 is a treasure — when one of them was hit in an attack in the Astrakhan region, it was losing an expensive part of Russia’s cutting-edge fighter capability. Replacing these planes is time-consuming and expensive, with limited spares, while Russia churns out more proven aircraft like the Su-30SM2 and Su-35S to fill gaps.
In action, the Su-57 has had a limited role in the war in Ukraine. Russia has been cautious about risking its precious few jets in contested airspace, not wanting to lose expensive, advanced technology and damage the jet’s global reputation. That self-restraint has meant the Su-57 has had little impact so far. Instead, Russia employs upgraded older jets, which may not be as advanced but are abundant and less expensive to repair.
Or vice versa, they have had to wait a considerable time before starting to export to foreign countries. Algeria is the first customer to buy six Su-57E fighter aircraft. Besides that, the pilots are training in Russia, and they’re talking about making more purchases. In part, it is a matter of doing what others in the region who have the most modern fighters are doing. Nevertheless, this order is the only one, and no big sales are expected. In 2018, India, which had originally intended to co-design a fighter jet with Russia, decided to withdraw, being dissatisfied with the stealth and electronic features of the Su-57. Few people can help but feel sympathetic towards the bad-boy reputation the aircraft got from the times it displayed its glaring weaknesses at airshows and from ongoing quality issues in the manufacturing.
One of the contrasts between the Western competitors and the Russian fighter is the severity and visibility of the different issues with the Su-57. Just to name only one example, the U.S. already produces over a thousand F-35s globally at various locations, all controlled by a massive supply chain and quality assurance regime. While the F-22 and F-35 are the stealth/sensor tech standards of gold with histories of success in modern warfare and very stable flight, Russian planes, although said to be able to cancel out Western air defense, are still considered by most experts as far from being perfect in the stealth area.
Nevertheless, the Kremlin still regards the Su-57 as central to Russia’s military strategy over the long haul. The Kremlin interprets the Su-57 as a national pride masterpiece and a way to keep pace with other powers of similar calibre. However, as the sanctions proceed and with all the production difficulties, the Su-57 is more of a prestige program than a front-line game changer. The global arms market is watching, but for now, Russia’s leading-edge fighter is having trouble flying on the runway and worldwide.