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China’s 6th-Generation J-36 is facing serious problems.

Flying without a tail seems unbeatable—until this happens. It’s not just about futuristic design. It’s not just about removing the vertical stabilizer to reduce the radar signature. When we look at tailless aircraft, it feels like we’re witnessing the apex of military aviation. But there is a critical detail almost no one is talking about: the engines haven’t fully caught up with this revolution.

The tailless concept promises less drag, a smaller radar cross-section (RCS), and absurd aerodynamic efficiency. However, flying without a tail relies on an extreme balance between aerodynamics, software, and… propulsion. And this is where the critical failure point lies: many of these projects are still using engines that aren’t fully considered "6th generation."

While the narrative speaks of a "new era" fighter, the propulsion system in many cases is still just an evolution of 5th-generation engines. This directly impacts the performance of anyone betting on a tailless design. Because it’s not enough to have stealth; you need adaptive thrust, superior thermal efficiency, and intelligent power management—features expected from true 6th-gen engines.

The challenge becomes even more sensitive when we think about stability. A plane designed to fly without a tail is born aerodynamically unstable by nature. It relies heavily on software and precise thrust vectoring to maintain stability during aggressive maneuvers. Now, imagine combining this instability with engines that still don’t deliver the full adaptive potential promised for the next generation.

Furthermore, thermal control and infrared signature management become critical factors. In a real combat scenario, it’s useless to fly tailless and reduce radar visibility if the engine still generates predictable thermal patterns. Power control, dynamic response, and supercruise efficiency are the elements that define whether the concept will dominate the skies or just look impressive on paper.

The point is simple: the tailless design seems unbeatable… until you analyze the complete package. Without truly 6th-generation engines, the system remains unbalanced. The promise exists. The design is impressive. But the technological maturity of the propulsion is the missing piece that could delay everything.

That is exactly what I break down in this video. If you want to understand why the tailless concept hasn’t reached its peak yet—and how engines directly influence this scenario—watch until the end. The final part connects all the pieces and completely changes the perspective.

Topics Covered:

The hidden flaw in China's J-36 tailless design
Why 5th-gen engines fail in 6th-gen airframes
The instability problem of tailless flight
Thermal signature vs. Radar stealth
The future of adaptive cycle engines

#TaillessFighter #6thGenFighter #J36 #ChinaMilitary #AviationTech #StealthTechnology