Indigenous Gas Turbine Engine Development

Iran has invested in indigenous gas turbine technology for both power generation and military applications. In the power sector, Iran operates extensive gas-fired power generation capacity and has worked to reduce dependence on foreign turbine manufacturers (GE, Siemens) for maintenance, spare parts, and new units — all heavily restricted under sanctions. Domestic companies have developed capabilities for turbine blade production, hot-section component repair, and control system upgrades. In the defense sector, small turbojet and turbofan engines power the Shahed-series drones and other UAVs.

Gas turbine engines represent one of the most technologically demanding areas of mechanical engineering, requiring advanced metallurgy (single-crystal superalloy blades), precision machining, thermal coatings, and sophisticated control systems. Iran's indigenous turbine capabilities remain significantly below global state-of-art — particularly for large utility-scale turbines — but the ability to maintain, repair, and selectively produce components domestically prevents sanctions from grounding the country's gas-fired power fleet.

The drone engine application is more advanced in terms of full indigenous production. Small turbojet engines like those powering Shahed-136 variants are simpler than utility turbines but still require precision manufacturing capability. Mass production of these engines demonstrates an industrial base that, while not cutting-edge, is sufficient for serial production of military-relevant propulsion systems. The gap between drone-scale and utility-scale turbine capability remains wide, but the foundation exists for continued development.