释义 |
lift coefficient
lift coefficient[′lift ‚kō·i‚fish·ənt] (aerospace engineering) The quantity CL = 2 L /ρ V 2 S, where L is the lift of a whole airplane wing, ρ is the mass density of the air, V is the free-stream velocity, and S is the wing area; this is also applicable to other airfoils. lift coefficientRelationship between angle of attack and 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. |