Indigenous Fighter-Class Turbofan Engine

The TEI TF35000 is Turkey's first indigenous high-thrust turbofan engine, designed to power the KAAN fifth-generation fighter. Revealed in May 2025 with official specifications, the engine represents the most strategically critical technology program in Turkey's defense ecosystem. Engine sovereignty is the single hardest bottleneck in indigenous fighter development — only the US, UK, France, Russia, and China have mastered military turbofan production.

The TF35000 builds on TEI's progressive engine development ladder: the PD170 diesel for drones, the TS1400 turboshaft for helicopters (which completed flight testing), and the TF10000 turbofan for trainers and UCAVs. TEI has emphasized this is not a scaled-up copy but incorporates fifth-generation technologies. The engine is expected to enter testing in the late 2020s and power KAAN Block 30/40 production variants.

Achieving indigenous fighter engine capability would make Turkey one of only six nations with this technology, fundamentally changing its geopolitical leverage. Currently, the KAAN program depends on GE F110 engines — a vulnerability that Washington could exploit through export controls. The TF35000 program represents Turkey's most ambitious bet on complete defense sovereignty.