Assertion: airfoil | /r/CapableOf | generate lift
Facets:
value: with less than one mach number
type: OTHER
value: by exerting a downward force
type: MANNER
value: in other words
type: MANNER
value: with less drag
type: OTHER
value: because of its curved shape
type: CAUSE
value: with a rough surface
type: OTHER
value: by bending" or redirecting airflow
type: MANNER
value: for a given angle of attack
type: PURPOSE
value: with significantly less drag
type: MANNER
Source sentences:
text: Airfoils are highly-efficient lifting shapes, able to generate more lift than similarly sized flat plates of the same area, and able to generate lift with significantly less drag.
text: which airfoil must produce the lift with less than one mach number .
text: In other words, an airfoil can create lift by exerting a downward force on the air as it moves through it.
text: When an airfoil produces lift, the flow ahead of the airfoil is deflected upward, the flow above and below the airfoil is deflected downward, and the flow behind the airfoil is deflected upward again, leaving the air far behind the airfoil in the same state as the oncoming flow far ahead.
text: When the lift coefficient is zero an airfoil is generating no lift but a conventionally cambered airfoil generates a nose-down pitching moment, so the location of the center of pressure is an infinite distance behind the airfoil.
text: Airfoils are more efficient shapes than flat boards and are able to generate more lift with less drag.
text: (In fact, one of the other incorrect theories proposed that only the lower surface produces lift!)
text: Furthermore, the airfoil is nothing more than a flat plate at this extreme angle so that it creates no lift (or axial force) but generates the greatest drag (and normal force) possible.
text: I doubt that the airfoil produced any lift at all, or maybe they require significantly higher airflow over them than flat tilted wings to produce a fair amount of lift...can you tell me what could be the reason?
text: The airfoil is also less cambered than the NACA 65018 which means it produces less lift for a given angle of attack when compared to the CH-750 airfoil.
text: As the angle of attack increases, the lift reaches a maximum at some angle; increasing the angle of attack beyond this critical angle of attack causes the upper-surface flow to separate from the wing; there is less deflection downward so the airfoil generates less lift.
text: An airfoil with smooth surface produces more lift than one with a rough surface.
text: This aerodynamic efficiency gives a measure of how efficiently the airfoil is able to generate lift.
text: An airfoil generates lift by exerting a downward force on the air as it flows past.
text: When an airfoil generates lift, several components of the overall velocity field contribute to a net circulation of air around it:
text: The airfoil is generating lift, and the magnitude of the lift is given by the Kutta–Joukowski theorem.:§ 4.5
text: which airfoil must produce the lift with less than one mach number .
text: which airfoil must produce the lift with less than one mach number .
text: which airfoil must produce the lift with less than one mach number .
text: In other words, an airfoil can create lift by exerting a downward force on the air as it moves through it.
text: An airfoil also creates lift by "bending" or redirecting airflow.
text: When an airfoil produces lift, there is a diffuse region of low pressure above the airfoil, and usually a diffuse region of high pressure below, as illustrated by the isobars (curves of constant pressure) in the drawing.
text: Recall that an airfoil produces lift because of its curved shape.
text: When the lift coefficient is zero an airfoil is generating no lift but a reflex-cambered airfoil generates a nose-up pitching moment, so the location of the center of pressure is an infinite distance ahead of the airfoil.
text: Airfoils are more efficient shapes than flat boards and are able to generate more lift with less drag.