# Experimental and analytical investigation of contra-rotating multi-rotor UAV propeller noise

> Research article (Applied Acoustics, 2021) · cited 74× · AI/ML

**Wikidata**: [openalex:W3124696885](https://www.wikidata.org/wiki/openalex:W3124696885)  
**Source**: https://4ort.xyz/entity/experimental-and-analytical-investigation-of-contra-rotating-multi-rotor-uav-propeller-noise