Header menu link for other important links
X
Drag Reduction Through Reduced Speeds for an Optimized Distributed Electric Aero-Propulsion Integration
Published in American Institute of Aeronautics and Astronautics Inc, AIAA
2022
Abstract
Numerical methods have been used to determine the improvement in the aerodynamic characteristics of a novel canard aircraft fitted with electrically powered propellers, modelled as actuator disks. The effects of this have been studied by subjecting the aircraft to a constant freestream at varying angles of attack for several propeller configurations. The four propeller configurations being studied are, pushers only, tractors only, tractors with a tail rotor, and tractors with tail and tip rotors. The pusher and tractor configurations are being compared to study the suction versus blowing effects caused by the propeller slipstreams over the wing. The propellers have also been tested when placed at a vertical offset to the lifting surface to assess their effect on the upper surface of the wing. The configuration with tractors and a tail rotor has shown to provide the highest increase in the lifting capacity of the aircraft for positive angles of attack while the offset tractors-only configuration has the highest lift-to-drag ratio. The excess lift obtained due to the propeller configurations can be sacrificed to operate the aircraft at a lower drag, thus achieving a higher range/endurance due to the saved battery energy, without having to change the aircraft or wing geometry. A 15% reduction in the aircraft speed reduced the drag experienced by the aircraft by ∼ 10.5%. Swirl in the slipstreams has also been studied to determine its effect on the aerodynamic performance of the aircraft with the said propeller configurations. © 2022, American Institute of Aeronautics and Astronautics Inc. All rights reserved.
About the journal
JournalAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA