Assertion: airfoil's drag | /r/CreatedBy | those parts of an aeroplane
Facets:
Source sentences:
text: Parasitic drag is drag created by those parts of an aeroplane that do not contribute to lift—e.g.
text: Induced drag is created by those parts of the aeroplane that create lift—the wings and the horizontal tail surface; induced drag is said to be the by-product or cost of lift