From first-principles engineering, they've found the Prandtl-D wing www.nasa.gov/centers/armstrong/programs_projects/PRANDTL/index.html
Wikipedia
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The Smithsonian specifically requested the aircraft because of its innovative proverse-yaw design.[9]
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New Wing Design Exponentially Increases Total Aircraft ...
https://technology-afrc.ndc.nasa.gov › featurestory › prandtl-wing-design
Proverse yaw—yawing in the same direction as a turn—would optimize aircraft performance. Initial results from flight experiments at Armstrong demonstrated that this wing design unequivocally established proverse yaw. This wing design further reduces drag due to lift at the same time.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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