Skin Friction Drag Calculator

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Posted by Dinesh on

Use this aerodynamics calculator to calculate the total skin friction drag for your aerodynamics problems.

Total Skin Friction Drag Calculation

Dynamic pressure (q) : [N/m2]
Wing surface (S) : [m2]
Air density (ρ): [kg/m3]
Air flow velocity (V) : [m/s]
Lift (L):
Total skin friction drag (Df) : [N]

Formula:

Df = ( 1.328 × q∞ × S ) / √((ρ × V∞ × L) / µ)

where,
q - Dynamic pressure (N/m2)
S - Wing surface (m2)
ρ - Air density (kg/m3)
V - Air flow velocity (m/s)
L - Lift (N)
µ - Absolute viscosity coefficient (For normal air (T = 288K): 1.7894×10-5kg/(ms))
Df - Total skin friction drag
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