What is it about?
A single and two-stage fan are simulated in take-off and landing conditions, with both a regular and a thrust optimized take-off. Their respective impacts on the noise perceived on the ground around the airport is investigated and compared. The impact of fan noise compared to jet noise is studied and individual noise sources explained.
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Why is it important?
Certification levels of supersonic aircraft have been a point discussed in ICAO CAEP meetings with plenty of research conducted in this field. However, the empirical noise prediction tools employed in other studies do not allow a detailed evaluation of noise source mechanisms and are generally not calibrated using two-stage fan designs. The analytical models used in this study are able to predict two-stage fan noise and model the physics behind the noise sources. This allows an investigation of the impact of fan design on noise certification levels.
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This page is a summary of: Single- and Two-Stage Fan Designs for a Supersonic Airliner with Focus on Certification Noise Reduction, January 2025, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2025-2680.
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