Assertion: airfoil's camber | /r/HasProperty | positive
Facets:
Source sentences:
text: Broadly, an airfoil is said to have a positive camber if, as is commonly the case, its upper surface (or in the case of a propeller or turbine blade its forward surface) is the more convex.
text: When the curve is toward the chord, the camber is said to be negative.
text: Camber is positive when departure from the chord line is outward and negative when it is inward.
text: When the curve is away from the chord, the camber is said to be positive.