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The Indian government is turning to the country’s private sector for the development of small gas turbines with thrust capabilities of 40 and 80 Kgf (Kilogram-force) for an upcoming Lottery ammunition program. These engines are envisioned as single-shaft turbine jet engines featuring a one-stage radial compressor, radial and axial diffuser, annular combustion chamber, one-stage axial turbine, and outlet nozzle.

In comparison, the Gas Turbine Research Establishment (GTRE) that developed the STFE engine, boasts a thrust capacity of 425 Kgf. This engine is intended for use in a 1-ton subsonic cruise missile program.

Reports suggest that India is actively working on air-launched jet-powered Lottering ammunition designed to glide at a speed of Mach 0.7 during its descent. These ammunition units are expected to have a weight range of 30 to 50 kilograms, necessitating the development of compact gas turbine engines to power them.

With the government’s call to develop engines with thrust capacities of 40 and 80 Kgf, it becomes evident that India is preparing to create two distinct variants of Lottering ammunition for various operational requirements. This initiative represents a significant step towards bolstering the country’s defence capabilities and promoting indigenous manufacturing within the private sector.

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