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The simplified airport noise tool RANE is updated to version 2. The additions allow for predictions to include fully three dimensional source directivity characterisation in the form of a spherical harmonic expansion. In addition, contours for vertical take-off and landing procedures are implemented.

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This page is a summary of: Closed-Form Analytical Approach for Calculating Noise Contours of Directive Aircraft Noise Sources, AIAA Journal, April 2023, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.j062033.
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