Assertion: airfoil's lift | /r/HasProperty | accounted by momentum fluxes
Facets:
value: with a flux of upward momentum
type: OTHER
Source sentences:
text: For a vertical rectangle that is much taller than it is wide, the unbalanced pressure forces on the top and bottom are negligible, and lift is accounted for entirely by momentum fluxes, with a flux of upward momentum that enters the control volume through the front accounting for half the lift, and a flux of downward momentum that exits the control volume through the back accounting for the other half.