DRDO Azad Engineering Expendable 350 KG Thrust Class Turbo Jet Engine: In a landmark achievement for India’s defense and aerospace sector, the nation has successfully developed its very first indigenous Expendable Turbo Jet Engine of the 350 kg thrust class. Designed meticulously by the Gas Turbine Research Establishment (GTRE)—a premier lab under the Defence Research and Development Organisation (DRDO)—the engine represents a massive step toward self-reliance in high-end military hardware.