coefficient of lift (CL)/lift coefficient
- A form in which aerodynamic data is presented. A lift coefficient is dependent upon the angle of attack, shape of the wing section and plan form, condition of the wing surface, Mach number, and Reynolds number. Since most other factors are constant, CL values are plotted against the angle of attack. The value of CL rises up to the stalling angle, where it falls off rapidly. Lift coefficient (CL ) = Lift (L)/Dynamic Pressure (q) × Wing Area (S) or CL = L/qS, or 2L/ρV2 S.
Aviation dictionary. 2014.
Look at other dictionaries:
Lift coefficient — The lift coefficient ( or ) is a dimensionless coefficient that relates the lift generated by a lifting body, the dynamic pressure of the fluid flow around the body, and a reference area associated with the body. A lifting body is a foil or a… … Wikipedia
Lift (force) — For other uses, see Lift. Boeing 747 8F landing A fluid flowing past the surface of a body exerts a surface force on it. Lift is the component of this force that is perpendicular to the … Wikipedia
Coefficient — For other uses of this word, see coefficient (disambiguation). In mathematics, a coefficient is a multiplicative factor in some term of an expression (or of a series); it is usually a number, but in any case does not involve any variables of the… … Wikipedia
Lift-induced drag — In aerodynamics, lift induced drag, induced drag, vortex drag, or sometimes drag due to lift, is a drag force that occurs whenever a moving object redirects the airflow coming at it. This drag force occurs in airplanes due to wings or a lifting… … Wikipedia
lift coefficient — A dimensionless number used in the formulae for aerodynamic lift that varies with the angle of attack (α) and the shape of the airfoil. The coefficient is derived from wind tunnel data and describes the characteristics of an airfoil. Relationship … Aviation dictionary
Lift-to-drag ratio — In aerodynamics, the lift to drag ratio, or L/D ratio ( ell over dee in the US, ell dee in the UK), is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher or more favorable L/D… … Wikipedia
lift/drag ratio — The ratio of the coefficient of lift to the coefficient of drag of an airfoil at various angles of attack. It is a measure of the airfoil’s efficiency. The angle of attack that gives the best lift by drag ratio is the most efficient angle of… … Aviation dictionary
lift curve — A plot of the coefficient of lift against the angle of attack. See lift coefficient … Aviation dictionary
lift — i. That component of the aerodynamic forces acting on the wing or airfoil section that opposes gravity. It is perpendicular to the flight path or free stream flow. Simply put, it is the difference between the static pressure on the airfoil lower… … Aviation dictionary
Coefficient of moment — The coefficients used for moment are similar to coefficients of lift, drag, and thrust, and are likewise dimensionless; however, these must include a characteristic length, in addition to the area; the span is used for rolling or yawing moment,… … Wikipedia