IMPACT OF TOROIDAL PROPELLER DESIGN ON UNMANNED AERIAL VEHICLE ACOUSTIC SIGNATURE AND AERODYNAMIC PERFORMANCE. IJASE [Internet]. 2024 Mar. 25 [cited 2026 Jun. 13];2(1):1-11. Available from: https://openlibindex.com/index.php/IJASE/article/view/IJASE_02_01_001