Prime Toolings Unveils India’s First Rotating Detonation Engine for Next-Gen Missile Systems

In a significant milestone for India's indigenous defense capabilities, Bengaluru-based Prime Toolings has unveiled the country’s first Rotating Detonation Engine (RDE), marking a new chapter in propulsion technology for next-generation missile and rocket systems.

The 1–2 kilonewton-class RDE is the first of its kind developed in India and is specifically aimed at powering missiles with operational ranges between 300 to 500 kilometers. According to company officials, the engine could eventually be integrated into advanced missile systems that demand compact design, enhanced fuel efficiency, and high thrust-to-weight ratios.

Unlike traditional rocket engines that rely on subsonic combustion, the RDE operates on a continuous detonation cycle. This results in a more efficient pressure gain mechanism, offering up to 25% improvement in fuel efficiency and thrust performance. The engine uses an annular combustion chamber where detonation waves continuously rotate, enabling more energy to be extracted from the same amount of fuel.

“This is a breakthrough in propulsion technology and a proud moment for Indian industry,” said a Prime Toolings spokesperson. “With no moving parts, lower complexity, and compact architecture, RDEs are ideal for high-speed, short-range missiles. We’re confident this technology will support India’s growing need for rapid and agile weapons platforms.”

The development aligns with India’s Atmanirbhar Bharat initiative, which encourages domestic defense production and reduces reliance on foreign suppliers. While RDE technology is still in its early stages globally—with agencies like NASA, JAXA, and DARPA leading experimental efforts—Prime Toolings’ achievement places India among the few nations actively prototyping this next-gen propulsion system.

The company has also leveraged advanced manufacturing techniques, including additive manufacturing (3D printing), to create critical engine components and ensure thermal resilience under extreme detonation conditions. Initial tests have reportedly confirmed stable operation, and further performance validation is expected at high-altitude and ground test ranges in the coming months.

Globally, Rotating Detonation Engines are being explored for applications ranging from tactical missile systems to hypersonic vehicles and even future space propulsion. Prime Toolings' system, though currently in the 1–2 kN thrust class, could evolve into larger configurations suitable for heavier platforms or satellite launch systems in the future.

Defense experts say the technology is still maturing, and challenges remain in maintaining stable combustion, reducing thermal wear, and integrating the engine into existing missile architectures. However, the unveiling of this RDE prototype signals strong potential for indigenous innovation in India’s strategic defense sector.

As India continues to modernize its missile arsenal, indigenous propulsion technologies like the RDE could play a pivotal role in shaping future combat capabilities, both tactically and strategically.