NASA wake vortex study at Wallops Islands NASA Langley Research Center, May, 1990
Diagram showing tip vortex, by Don Garlick.
Diagram showing tip vorteces, by Don Garlick
Diagram of tip separation to wing span of pink footed geese, by Don Garlick
Graph of drag % relative to solo flight, by Don Garlick.
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Diagram of tip separation to wing span of pink footed geese, by Don Garlick
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