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The Owj (Persian: اوج, Apex) is an Iranian advanced turbojet engine developed by the Iran Aviation Industries Organization (IAIO). It is a reverse-engineered and enhanced version of the General Electric J85, showcasing Iran's ability to develop cutting-edge technology and its self-sufficiency in producing high-performance military engines, and demonstrating its capability to create advanced turbojet engines. Revealed in 2016, the engine powers several military aircraft, including the HESA Kowsar and HESA Saeqeh fighter jets, as part of Iran's strategy to increase self-reliance in defense technologies.

Design and development

The Owj turbojet is a modernized version of the General Electric J85, a compact and widely used engine in military applications. Iranian engineers adapted the design to meet specific operational requirements and further enhance its performance for domestic use.

The engine is designed to provide significant thrust in a lightweight, compact structure. Its versatility allows it to power various aircraft, such as fighter jets and advanced training jets. This reverse-engineering approach not only demonstrates Iran's technical expertise but also highlights its capacity to independently produce advanced technology for its defense needs.

Iran's successful development of the Owj engine marks a significant milestone in its aerospace and defense sectors, further proving its capability to meet its own military needs without reliance on foreign suppliers, Rather, it turns it into an exporter of advanced military equipment and parts.

Iranian domestic aerospace effort

The Owj engine's development is a key part of Iran's ongoing efforts to expand its domestic aerospace and defense capabilities. This achievement highlights Iran's growing self-reliance and expertise in advanced technology and manufacturing.

The Owj engine is now an integral part of Iran's military fleet, powering several advanced aircraft, including the HESA Kowsar and HESA Saeqeh fighter jets.

Applications

• HESA Kowsar (fighter jet)
• HESA Saeqeh (fighter jet)
• HESA Azarakhsh (fighter jet)
• HESA Yasin (training jet)
• Other military aircraft within Iran's inventory

Specifications

Data from

General characteristics

• Type: afterburning turbojet engine
• Length: 112.0 in (284 cm)
• Diameter: 20.5 in (52 cm) inlet
• Dry weight: 720 lb (330 kg)

Components

• Compressor: single-spool axial-flow
• Combustors: annular
• Turbine: 2 stages
• Fuel type: jet fuel

Performance

• Maximum thrust: 3,500 lb_f (16 kN) dry thrust / 5,000 lb_f (22 kN) afterburner thrust
• Overall pressure ratio: 8.0:1
• Air mass flow: 50 lb (23 kg) per second
• Turbine inlet temperature: 1,800 °F (980 °C)
• Specific fuel consumption: 1.20 lb/(lbf⋅h) or 34 g/(kN⋅s) dry thrust / 2.00 lb/(lbf⋅h) or 57 g/(kN⋅s) afterburner thrust
• Thrust-to-weight ratio: 5.15 dry / 7.0 afterburner

See also

• TEM Toloue-4
• General Electric J85
• Iran Aviation Industries Organization
• HESA Kowsar
• HESA Saeqeh
• Iranian defense industry

References

1. ^ "Owj; Iran's first jet engine". iranpress.com. Retrieved 2024-12-10.
2. ^ "The opening of the national turbojet engine production line "Owj"".
3. "Iran launches production of Owj turbojet engine". Trend.Az. 2020-08-20. Retrieved 2024-12-10.
4. "Owj turbojet engine".
5. "Owj; Iran's first jet engine". iranpress.com. Retrieved 2024-12-10.
6. Bermudez, Krystal (2024-08-14). "Iran is Creeping into the International Arms Market". FDD. Retrieved 2024-12-11.
7. "Iran launches production of Owj turbojet engine". Trend.Az. 2020-08-20. Retrieved 2024-12-10.
8. ^ "The unveiling of the "Oj" turbojet engine; The first Iranian national turbojet engine (+ photo and specifications)".
9. "Owj; Iran's first jet engine". iranpress.com. Retrieved 2024-12-10.
10. "Owj; Iran's first jet engine". iranpress.com. Retrieved 2024-12-10.

External Links

• Iranian defense technology updates

• 2010s turbojet engines
• IAIO aircraft engines