# Comparison of the Noise Directivity Pattern of the Main Rotor of a Helicopter for Flight and Hover Modes

> Research article (Acoustical Physics, 2020) · cited 11× · AI/ML

**Wikidata**: [openalex:W3028035796](https://www.wikidata.org/wiki/openalex:W3028035796)  
**Source**: https://4ort.xyz/entity/comparison-of-the-noise-directivity-pattern-of-the-main-rotor-of-a-helicopter-for-flight-and-hover-modes