IIT Madras has achieved a breakthrough in defence technology by developing ramjet-assisted artillery shells that can extend the range of existing gun systems by nearly 50 per cent without compromising lethality. This innovation integrates a ramjet engine into standard 155 mm artillery ammunition, replacing the conventional base-bleed unit, and enables sustained propulsion after the shell exits the gun barrel.

The technology has shown substantial range improvements across multiple platforms, including Advanced Towed Artillery Gun System (ATAGS), extended range from 40 km to 70 km; Vajra K-9 gun, extended range from 36 km to 62 km; Dhanush artillery guns, extended range from 30 km to 55 km, said IIT Madras.

The project, launched in 2020 in collaboration with the Indian Army, has undergone extensive gun and field trials, successfully validating clean gun exit, stable flight, and reliable ramjet ignition. This innovation aligns with the Atmanirbhar Bharat initiative, demonstrating how upgrading existing systems can deliver cost-effective, survivable, and future-ready firepower for modern battlefields.

The project was led by Prof PA Ramakrishna of IIT Madras, along with Lt Gen P R Shankar (retd), Prof HSN Murthy, Prof G Rajesh, Prof M Ramakrishna, Prof Murugaiyan, Lt Gen Hari Mohan Iyer (retd), Prof Lazar C and Dr Yogesh Kumar Velari.