Indian Army to Pioneer World’s First Deployment of Ramjet-Powered 155 mm Artillery Shells
In a landmark advance in defence technology, the Indian Army will become the world’s first force to deploy ramjet-powered 155 mm artillery shells, marking a major leap in artillery capability and indigenous innovation.
Engineers at the Indian Institute of Technology (IIT) Madras, with support from the Army Technology Board, developed these advanced “air-breathing” artillery rounds to significantly extend the range of conventional 155 mm ammunition without compromising lethality. The ramjet propulsion mechanism leverages high-speed travel to ingest atmospheric air, mix it with onboard fuel, and generate continuous thrust — allowing shells to reach well beyond the conventional range of standard rounds.
Traditional artillery shells rely solely on the explosive force at launch and ballistic trajectory to reach targets. In contrast, the ramjet-assisted projectile continues to accelerate mid-flight, potentially increasing strike range by 30% to 50% — translating to distances approaching 80 km or more. This significant extension will enhance the Indian Army’s long-range firepower, offering deeper engagement envelopes and stronger deterrence along sensitive borders.
One of the key advantages of the technology is its adaptability. The ramjet unit can be retrofitted onto existing 155 mm artillery shells, making it compatible with multiple gun systems already in service — from towed howitzers to modern self-propelled platforms.
Successfully tested at established firing ranges, the project now moves toward final refinement and induction, reinforcing India’s push for self-reliant defence solutions under the Atmanirbhar Bharat initiative.
