The streamers on the Prandtl-D No. 2 as it is launched illustrate how aerodynamic forces are maximized as birds overlap wingtips when flying in formation.
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The streamers on the Preliminary Research Aerodynamic Design to Lower Drag (Prandtl-D) No. 2 as it is launched illustrate how aerodynamic forces are maximized as birds overlap wingtips when flying in formation...Learn more
August 8, 2014
NASA Photo / Tom Tschida