Russian officials and aviation experts routinely suggest the Sukhoi Su-57 is a superior aircraft to the U.S.-made Lockheed Martin F-35 Lightning II.

A rendering of a Su-57 with the new engine. (Image credit: Russian Internet) The AL-51F/ Izdeliye 30 engine The engine that has been initially used for the Su-57 is the NPO Saturn AL-41F-1, also ...

The Sukhoi Su-57 (NATO reporting name: Felon) is a low-observable, single-seat, twin-engine, multirole fifth-generation jet fighter developed since 2002. Sukhoi internally refers to the aircraft ...

In many ways, the Su-57 is similar to the F-22 Raptor, as it's the first of its kind for Russia in much the same way the American fighter is to the West, though it came after the F-22's introduction.

The Su-57’s Russian aircrew was out servicing their bird when a mixed squadron of American F-16s and F-35s arrived. Immediately, the Russians gathered to watch the U.S. planes landing.

The Ukrainian Defense Intelligence Agency said it targeted Sukhoi Su-57 fighter jets over the weekend in the Akhtubinsk airfield, which is 360 miles behind the front line of the conflict.