Assertion: airfoil | /r/HasProperty | symmetrical
Facets:
value: in cruising flight
type: OTHER
value: almost
type: DEGREE
Source sentences:
text: The most commonly used airfoils for flying model aircraft are: Symmetrical
text: In cruising flight the aerofoil is almost symmetrical.
text: This airfoil is symmetrical, meaning the curve of the upper surface is the same as that of the lower surface.