Design and Optimization of a Propeller With Increased Energy Efficiency

In modern electric vertical take-off and landing (eVTOL) multi-rotor aircraft, the propeller serves as the primary unit for flight. Consequently, the majority of the onboard electricity is dedicated to its operation. One of the primary challenges in such machines is the short flight duration, typically ranging from 20 to 30 minutes, directly attributed to the efficient operation of the propellers. The article discusses the positive effects achieved through geometric changes in the design of modern propellers and their impact on aircraft technical data. During the research, various conceptual models of propellers were developed, based on the widely used construction in today’s electric vertical take-off and landing (eVTOL) flying machines. Both computer simulations and experimental tests were conducted on these models. After scientific research and analysis, the most promising conceptual propeller model has been identified, demonstrating a 10— 15 % improvement in energy efficiency compared to traditional propeller designs.