KAAN Jet Integrates APU-60 for Engine-Free Power Generation
KAAN to Power Up Without Engine Start via Domestic APU
Turkey is advancing its strategic goal of reducing external dependencies in defense with a critical innovation for its national fighter jet. The KAAN will be able to generate its own electricity and prepare for flight without starting its main engine, thanks to a new, domestically developed Auxiliary Power Unit (APU).
The APU-60: A Milestone for Operational Independence
According to the latest reports, the first integration of the Turkish-made APU-60 onto the KAAN is scheduled for 2026. This marks a pivotal step in enhancing the autonomy and flexibility of the fifth-generation aircraft.
What is an APU? It is a compact gas turbine that provides essential power before the main engine starts. For KAAN, it will supply electricity and compressed air for avionics, air conditioning, and engine start-up, drastically reducing reliance on external ground support equipment.
This capability will allow KAAN to perform pre-flight checks independently, slashing turnaround times and boosting combat readiness.
TRMOTOR: Driving Turkey's Engine Sovereignty
The development is spearheaded by TRMOTOR, a cornerstone of Turkey's defense industry focused on engines and power systems. The company's mission is to create sustainable, domestic solutions to eliminate foreign reliance on critical components.
Strategic Evolution: After building its technological foundation from 2017-2021, TRMOTOR added APU and air turbine start system projects to its portfolio in 2021, directly supporting the KAAN program.
How the APU-60 Integrates with KAAN's Systems
The APU-60's role is integral to starting the main engine. It generates compressed air that feeds into the Automatic Transition System (ATS). The ATS then uses this airflow to spin a turbine, which turns the main engine's shaft, creating the necessary conditions for ignition.
This process underscores the APU's critical function in making KAAN a self-sufficient platform, free from logistical bottlenecks.
Expanding the Portfolio: The APU-40 Project
Beyond the KAAN, TRMOTOR is also developing the APU-40, designed for integration into various aircraft and helicopters. Main engine integration for this unit is ongoing, with testing slated for the first quarter of 2026.
A Holistic Approach to Power Systems
TRMOTOR's expertise extends beyond the core engine to encompass all surrounding subsystems, ensuring total system integrity and reliability. Their focus areas include:
- Electronic control systems
- Lubrication and fuel supply
- Ignition and activation systems
- Pneumatics and gear systems
A Matter of National "Survival"
The drive for domestic engine technology is framed in the most strategic terms. TRMOTOR CEO Osman Saim Dinç has emphasized that this technology represents not just engineering, but independence, resilience, and national survival.
Conclusion: The integration of the APU-60 into KAAN is far more than a technical upgrade. It is a decisive stride toward technological sovereignty, reducing foreign dependence and solidifying Turkey's position in the global defense industry.
