05 - Propulsion and Energy

NUMERICAL INVESTIGATION OF GEOMETRIC EFFECTS ON INFRARED CHARACTERISTICS OF MULTI-STREAM SERPENTINE NOZZLES

Y. Wu¹, L. Zhou¹, J. Shi¹, Y. Meng¹, Z. Wang¹; ¹Northwestern Polytechnical University, China

To optimize stealth performance, this work quantifies the IR sensitivity of multi-stream serpentine nozzles to geometric configurations. Results indicate that the Shield Ratio is the dominant factor, where a higher ratio reduces wall radiation by up to 91.8%. This study establishes a correlation between nozzle geometry and IR signatures, offering a theoretical basis for the low-observable design of advanced propulsion systems.

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DOI: 10.71945/icas2026_0788