## drag coefficient
C, is independent of
the size of the object and is usually determined in a wind
tunnel. It is part of the basic drag equation:_{d}F = 0.5 × ρ × V^{ 2} ×
C × _{d}A
where F is the drag force, ρ (rho) is the air density,
V is the air velocity, and A is the cross sectional area. All
of these, except C, are directly measurable in a wind
tunnel so _{d}C can be thought of the "fudge factor" that
accounts for all of the aerodynamic peculiarities of a shape. _{d}## Related entry• drag form factor## Related category• AERODYNAMICS AND AERONAUTICS | |||||||

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