Assertion: airfoil's drag | /r/HasProperty | low
Facets:
value: through negative lift coefficients
type: MANNER
value: over a range of positive
type: OTHER
value: quite
type: DEGREE
Source sentences:
text: Yes, the L/D will be high but that is mostly because the drag is quite low.
text: It is evident, therefore, that the airplane designer is interested in obtaining an airfoil that will produce high lift and low drag over the airplane's flying range of "angles of attack," (the angle of attack being the acute angle between the chord of an airfoil and the direction of the relative wind).
text: The drag for the Zone-Horizontal is low over a range of positive through negative lift coefficients as shown on the foil comparison polar I provided.
text: The drag for the Zone-Horizontal is low over a range of positive through negative lift coefficients as shown on the foil comparison polar I provided.
text: A drawback of the numerical trial and error optimization process is that it can take a long time, and that the optimization programs tend to move into a corner of the requirements: the resulting airfoil might indeed have a low drag and high lift, but maybe only in a very small operating range