NUR RACHMAN SUPADMANA MUDA; BILQIS FARANADILA. ACOUSTIC METAMATERIAL IMPLEMENTATION FOR NOISE ATTENUATION AND WAVE REDIRECTION IN QUADCOPTER DRONE PROPELLERS. Journal of Innovation Research and Knowledge, [S. l.], v. 5, n. 7, p. 8707–8714, 2025. DOI: 10.53625/jirk.v5i7.12044. Disponível em: https://mail.bajangjournal.com/index.php/JIRK/article/view/12044. Acesso em: 7 mar. 2026.