India Develops First Indigenous Expendable Turbojet Engine

India has made a nation’s first native turbojet engine in the 350 kg thrust category. This revolution was unveiled on July 22, 2026, representing a new huge advancement towards enhancing the indigenous propulsion capacity of the country in terms of the advanced missiles and unmanned systems. This engine was designed by the Gas Turbine Research Establishment (GTRE) of the Defence Research and Development Organisation (DRDO) and it is produced by Azad Engineering which showing the high skills of India in high-end aerospace technologies and the realization of the idea of Atmanirbhar Bharat in the field of defence.

What Is an Expendable Turbojet Engine?

A turbojet engine is a type of jet engine that produces force from air flowing in and fuel injected in the engine, which is ignited and released through a nozzle.

An expendable turbojet engine is developed specifically for one-off use or short use in military operations, making this type of engine perfect for missiles and unmanned vehicles, as it does not need to be recovered after being used.

An expendable jet engine is not made for cyclic use, making it ideal for small size, consistent performance, and reliability in work.

Indigenous Turbojet Engine of India: Key Highlights

The engine developed by India is a product of years of research and collaboration between private industry and government laboratories.

Major Features

The first indigenous expendable turbojet engine developed by India.
The thrust category of the engine is 350 kg.
The engine is designed by the Gas Turbine Research Establishment (GTRE).
GTRE operates under the Defence Research and Development Organisation (DRDO).
The engine is manufactured and assembled by Azad Engineering, Hyderabad.
The engine was delivered in about 24 months.
The engine was formally handed over on July 22, 2026.

This achievement shows how advanced India is becoming in developing propulsion systems on its own.

Who Was Responsible for the Engine’s Development?

The project is the fruit of a partnership between India’s biggest defence research organization and the private manufacturing industry.

Gas Turbine Research Establishment (GTRE)

GTRE is a laboratory in the DRDO, dealing with the development and design of gas turbine propulsion systems destined for military aircraft, missiles, and other military platforms.

Azad Engineering

The company Azad Engineering, with a location in Hyderabad, was responsible for the building and assembly of the engine.

The production of the engine was completed within the time frame of two years stressing again the potential of the private sector in India in this sphere.

The engine was handed over formally in presence of the senior representatives of DRDO and Azad Engineering.

Uses of the Indigenous Turbojet Engine

The state-of-the-art engine is meant to cater to the needs of many security platforms that are in need of compact and lightweight engines.

Expected Applications

Anti-ship missiles at sea
Air-to-air missiles
Air-to-ground missiles
Medium range anti-drone missiles
Unmanned Aerial Vehicles
Future indigenous missiles projects.

Turbojet engines have been preferred in all of those applications due to their ability to sustain high speeds, while having a compact design.

Significance of GTRE in Defence System of India

Gas Turbine Research Establishment (GTRE) has contributed significantly to the advancement of the domestic propulsion technologies in the defence industry.

Among GTRE’s tasks are,