Propeller partial ground effect
Cai, Jielong Gunasekaran, Sidaard Ol, Michael V. Ahmed, A.
Cai, Jielong
Gunasekaran, Sidaard
Ol, Michael V.
Ahmed, A.
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2020-01-05
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Citation
Jielong Cai, Sidaard Gunasekaran, Anwar Ahmed and Michael V. Ol. "Propeller Partial Ground Effect," AIAA 2020-1028. AIAA Scitech 2020 Forum. January 2020.
Abstract
We extend our recent electric propeller ground-effect study to consider a circular ground-plate, instead of planar-surface of assumed infinite extent. Parameter studies include propeller to plate diameter ratio, propeller diameter to ground-offset ratio, and propeller pitch to diameter ratio. As with classical ground effect, benefits of thrust-augmentation and/or power-reduction with proximity to the ground, depend on the propeller pitch to diameter ratio, with stronger ground-effect for smaller pitch to diameter ratio. Flow visualization suggests on/near the ground-plate suggests a projected dividing-streamline, external to which, the flow is largely radial. A ground-plate of half of the propeller diameter was found to have minimal distinction from that of an unimpeded free-stream, while when the plate and propeller have the same diameter, the resulting ground-effect already resembles that of the infinite-plate. © 2020 American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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Publisher
American Institute of Aeronautics and Astronautics Inc, AIAA
Journal
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Series
AIAA Scitech Forum, 2020
6 January 2020 through 10 January 2020
Orlando
237189
6 January 2020 through 10 January 2020
Orlando
237189