The Sound of Rocket Failure: Combustion Instability and the Role of Whistling Nozzles

In rocket propulsion, combustion instability can lead to catastrophic failure, with one of the key contributors being the phenomenon of whistling nozzles. This acoustic disturbance occurs when the nozzle design causes a high-frequency resonance that amplifies combustion irregularities. The resulting instability can severely affect engine performance and mission success. Understanding the dynamics of these whistling nozzles is crucial for improving rocket design, enhancing safety, and preventing failure. This research delves into how nozzle shape and airflow contribute to these disruptive sounds, offering insights into how we can better control combustion in future rocket systems.

International Research Hypothesis Excellence Award

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