Battle of the Twins: Su-35 vs. Su-35S! We Reveal the 5 Main Differences That Few People Know About

You’ve probably noticed that articles about Russian aviation often mention two similar names: Su-35 and Su-35S. At first glance, it seems like these are just different designations for the same fighter jet—but that’s not quite the case. Let’s take a closer look at what this is all about, how these aircraft differ, and why experts always emphasize the difference between them.

Su-35: From Concept to Reality

In the early 2000s, they decided it was time to give the legendary Su-27 a new lease on life. Not just a quick fix, but something truly new! And that’s how the Su-35 was born.

Imagine this: they take a proven fighter jet—and pack it full of cutting-edge technology. Sounds bold? Well, the designers pulled it off!

What has changed?

• The controls have become more responsive. It’s as if the plane has started to “sense” the pilot—it responds to the slightest movement and is more responsive than before.
• Maneuverability was top-notch. The fighter twisted and turned, entering turns so effortlessly that the pilots could only shake their heads in admiration.
• Its weaponry is more powerful. It’s no longer just an “air-to-air” fighter—it’s a versatile combat aircraft: powerful in the air and capable of striking accurately on the ground.
• Range—greater. You can fly farther without having to check the map for gas stations. Freedom—that’s what it means!

The Su-35 turned out to be more than just an improved version—it became a testing ground for bold ideas. Everything that later went into production was tested on it.

“The Su-35 marked an important step in the evolution of Russian fighter jets, allowing for the testing of a number of technologies that were later applied to the Su-35S,” notes the “Voennoe Obozrenie” website.

Su-35S: A Production Model with Significant Improvements

And now—meet the Su-35S! If the Su-35 was a bold experiment, this is a fully realized masterpiece, ready for combat. The letter “S” isn’t just a letter—it’s a mark of quality: “serial,” perfected to the highest standard.

What have they improved here? Well, almost everything!

• The radar has sharp eyes. Now the plane can spot the enemy from far away. Before, it could only see them up close; now, it can see them from far away. Can you tell the difference? It’s like switching from regular glasses to binoculars!
• The engines are powerful. With thrust vectoring, the fighter works wonders in the sky: it hovers, spins, and changes direction in a fraction of a second. Pilots say, “It’s like magic—but it’s science!”
• The cockpit is modern. The old gauges have been replaced by bright displays. The pilot can see everything: where the enemy is, where his own forces are, and where to fly. It’s convenient, intuitive, and stylish!
• The design is sturdy. The reinforced fuselage can withstand any conditions. Whether it’s Arctic cold or tropical heat, the aircraft is ready for action.
• Maintenance is easier. Mechanics can now get the plane ready for takeoff faster. Less hassle—more flights. Isn’t that great?

“The Su-35S is a full-fledged 4++-generation multirole fighter capable of operating effectively in both air-to-air combat and against ground targets,” emphasizes the magazine *Arsenal of the Fatherland*.

Let’s compare them in practice: a table of specifications

To make the difference clearer, let’s summarize the key parameters in a table:

Interesting Details

• The Su-35S became the first Russian fighter jet with thrust-vectoring engines to enter mass production. Previously, such technology had only been used on prototype aircraft.
• The Su-35S was used to test solutions that were later incorporated into the Su-57. It turns out that it served as a sort of bridge between generations.
• The fighter jet has been displayed at international air shows on more than one occasion.
• During the tests, the pilots performed aerobatic maneuvers in the Su-35S that were previously considered nearly impossible for heavy fighters: the “Pugachev’s Cobra” and the “Bell.”

Why bother understanding these differences at all?

It may seem that the differences between the Su-35 and the Su-35S are merely technical details of interest only to specialists. But in reality, understanding these differences helps:

• Do not confuse experimental solutions with operational capabilities;
• to more accurately assess the capabilities of a modern Russian fighter jet;
• to see how our aviation industry is evolving: from testing new ideas to mass production.

Conclusion

The Su-35 and Su-35S are related like a rough draft and the final version of a painting. The former served as a testing ground. It helped validate new technologies and determine what works and what doesn’t. The latter is the finished product: reliable, powerful, and ready for real-world missions. Distinguishing between them is important not merely as a formality, but to truly understand how modern Russian combat aviation is structured.