Che Umar CMI, Zulkafli MF. Distance and Rotational Speed Analysis of Coaxial Rotors for UTHM C-Drone. PAAT [Internet]. 2021 Dec. 21 [cited 2024 Jul. 23];1(1):46-55. Available from: https://penerbit.uthm.edu.my/ojs/index.php/paat/article/view/10301