• Sanjog Panda
• Aanchal Nishad
• Nikhil Gangamkote

This report presents a comprehensive analysis of an advanced pintle-type fuel injector system tailored for guided missile propulsion. Integrating experimental cold-flow testing with water as a simulant, analytical fluid dynamics, and design comparison, the study deciphers the interplay of injector geometry, internal flow mechanics, and atomization behavior. Results reveal that multi-orifice configurations (e.g., 4-hole caps) enhance atomization quality, broaden spray cone angles, and improve combustion efficiency — critical factors for agile missile maneuvering and thrust modulation. Leveraging principles of Bernoulli, Navier–Stokes, and Venturi effect, the injector architecture strategically induces turbulence and cavitation to promote droplet breakup. Though preliminary tests used water, findings underscore the design’s potential for improved specific impulse, combustion stability, and reduced emissions in operational scenarios. Future work includes quantitative droplet sizing, CFD validation, and hot-fire testing with actual propellants to complete the performance envelope and validate the injector’s role in next-generation missile systems.

Pintle injector, guided missile propulsion, atomization dynamics, fluid dynamics, CFD analysis, combustion efficiency.

"Advanced Fuel Injector Systems for Guided Missile Propulsion: Design Principles, Atomization Dynamics, and Performance Characterization", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 7, page no.a612-a634, July-2025, Available :http://www.jetir.org/papers/JETIR2507066.pdf

"Advanced Fuel Injector Systems for Guided Missile Propulsion: Design Principles, Atomization Dynamics, and Performance Characterization", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 7, page no. ppa612-a634, July-2025, Available at : http://www.jetir.org/papers/JETIR2507066.pdf