Wing Lift-Drag Polar & Aerodynamic Efficiency Calculator

Model parabolic drag polar behavior, induced drag, total lift-to-drag ratio (L/D), maximum endurance and range speeds, and minimum glide angle.

Wing Aspect Ratio AR (b² / S): Jet transport ~ 8-10; Sailplane ~ 20-30

Oswald Efficiency Factor e:

Zero-Lift Drag Coefficient CD0: Clean airframe ~ 0.018 - 0.028

Operating Lift Coefficient CL:

Operating Lift-to-Drag (L/D):

—

Glide ratio: — : 1

Maximum L/D (L/D_max):

—

at CL = —

Induced Drag Coefficient (CDi):

—

— % of total drag

Total Drag Coefficient (CD):

—

Minimum Glide Angle:

—

Glide Range per 1,000 ft Alt:

—

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