TEI-TJ90 Turbojet Engine

The TEI-TJ90 Turbojet Engine is a turbojet engine developed by TUSAŞ Motor Industries (TEI) specifically for unmanned aerial vehicles (UAVs). This engine emerged from TEI’s national-level research and development initiatives and is positioned as a competitive product in the international market. The TEI-TJ90 is controlled entirely by locally developed electronic control units (ECUs) and is designed to meet the requirements of UAVs gas turbine.

TJ90 Turbojet Engine (TEI)

Development Process

The TEI-TJ90 was designed to meet established flight and durability criteria throughout its design and testing phases, with performance validated through experimental flight tests. As a locally developed turbojet solution for UAV systems, it represents a demonstration of domestic engineering capability in both technical and operational terms.

Development of the engine began in January 2011 with the objective of designing a turbojet engine delivering higher thrust than the TEI-TJ35 model. The project was carried out with support from TEYDEB, and its first flight test was conducted on 5 June 2013. On 7 June 2017, the TEI-TJ90 completed its first integrated platform flight with the Şimşek UAV platform developed by Turkish Aerospace Industries (TUSAŞ).

TUSAŞ ŞİMŞEK UAV (Anadolu Agency)

Technical Specifications

The key technical features and capabilities of the TEI-TJ90 are as follows:

• Start method: Kerosene start and electric start capability
• Electromagnetic compatibility: Compliance with EMI/EMC standards
• Durability: Resistance to catapult loads
• Control system: Locally developed electronic control unit (ECU) with data link to ground station
• Standards: Compliance with military standards
• Maximum Thrust: 390±10 N (approximately 90 lbf)
• Specific Fuel Consumption: 0.17 kg/N·h (1.7 lb/lbf·h)
• Maximum Shaft Speed: 96,000 RPM
• Engine Dry Weight: 4.75 kg (10.5 lb)
• Dry Weight Including MKS: 6.95 kg (15.3 lb)
• Length: 380 mm (14.9 in)
• Diameter: 153.5 mm (6 in)
• Maintenance Interval: 25+ hours

TJ90 Model (TEI)