India's First Indigenous 5 kN Air-Breathing RDE

India's First Indigenous 5 kN Air-Breathing RDE

Category: Science & Technology / Defence Technology / Aerospace

Notes

• Defence startup D-Propulse Aerospace demonstrated India's first indigenous 5 kN air-breathing Rotating Detonation Engine (RDE).
• Demonstration took place at a DRDO facility in Hyderabad.
• The system achieved Technology Readiness Level-5 (TRL-5).
• RDE uses pressure-gain combustion.
• Advantages highlighted:
  • Higher thermodynamic efficiency
  • Fewer moving parts
  • Simpler architecture
  • Potentially lower production cost
  • Reduced manufacturing time
• Claimed efficiency improvement: 15–25% compared with conventional air-breathing propulsion systems.
• Technology was incubated at IIT Madras.
• Planned launch: December 2027.
• D-Propulse was founded in July 2025.

Key Pointers

RDE → Pressure-gain combustion → Advanced propulsion

• Potential applications: high-supersonic and hypersonic flight.
• TRL-5 indicates technology validation in a relevant environment.