Assertion: airfoil's pressure | /r/CapableOf | lift action
Facets:
value: from lowered pressure above the wing
type: OTHER
Source sentences:
text: so that advantage can be taken of the air's response to certain physical laws, and thus develop two actions from the air mass; a positive pressure lifting action from the air mass below the wing, and a negative pressure lifting action from lowered pressure above the wing.
text: so that advantage can be taken of the air's response to certain physical laws, and thus develop two actions from the air mass; a positive pressure lifting action from the air mass below the wing, and a negative pressure lifting action from lowered pressure above the wing.