Investigation of Rotor Efficiency with Varying Rotor Pitch Angle for a Coaxial Drone

Coaxial rotor systems are appealing for multirotor drones, as they increase thrust without increasing the vehicle’s footprint. However, of a coaxial system is reduced compared to having rotors in line. It interest efficiency systems, both extend mission time and enable new capabilities. While some parameters have been explored, such rotor-to-rotor distance, influence pitch less understood. This work investigates how adjusting lower relative that upper one impacts overall system. A methodology based on blade element momentum theory extended addition blade-resolved simulations using computational fluid dynamics performed. medium-sized drone with diameter 71.12 cm used study. Experiments performed stand validate methods. The results show there exists peak total (thrust-to-power ratio), can be increased by 2% 5% rotor. contributes furthering our understanding potentially lead more efficient drones time.