Aspect ratio (aeronautics)
Videos
In aeronautics, the aspect ratio of a wing is a measure of its length relative to its width. Mathematically, it is defined as the square of the wingspan divided by the wing area. For wings of constant
An ASH 31 glider with very high aspect ratio (AR=33.5) and lift-to-drag ratio (L/D=56)
Extremely high aspect ratio wing (AR=51.33) of the Eta motor glider providing a L/D ratio of 70
High aspect ratio wing (AR=12.8) of the Bombardier Dash 8 Q400
Moderate aspect ratio wing (AR=5.6) of a Piper PA-28 Cherokee
Lift-to-drag ratio
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In aerodynamics, the lift-to-drag ratio is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic drag caused by moving through air. It describes the aer
Aspect ratio (aeronautics)
…wing has a low aspect ratio. Aspect ratio and other features of the planform are often used to predict the aerodynamic efficiency of a wing because the lift-to-drag ratio increases with aspect ratio, improving the fuel economy in powered airplanes and the gliding angle of sailplanes. The aspect ratio AR is the ratio of…
Drag vs Speed. L/DMAX occurs at minimum Total Drag (e.g. Parasite plus Induced)
Coefficients of drag CD and lift CL vs angle of attack.
The eta has the best glide ratio for a sailplane