Some studies on the aerodynamic effect of the gap between airplane wings and fuselages

Shatswell Ober
Nov 1929

The general result indicated by this study is that if desirable from any viewpoint the gap between wing and fuselage may be closed without detrimental aerodynamic effects, and with a given monoplane there is less drag if the wing is directly on top of the fuselage than if it is parasol.

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