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Aerodynamics Intermediate

02 The Lift Equation

Everything so far compresses into one line: L = 12 ρ V² S C_L Density, speed squared, wing area, and a coefficient hiding the shape and the angle. This lesson is pure calculation. Work in SI units, state the unit with every answer, and round only at the end; answers are checked against a tolerance, not a keyword list.

Step 1 / 4

An aircraft flies at V = 60 m/s in sea-level air, ρ = 1.225 kg/m³ . Compute the dynamic pressure q = 12 ρ V² . Answer in Pa.

Hints

Square the speed first: 60² = 3600 .
Then q = 0.5 × 1.225 × 3600 .
A pascal is a newton per square metre. Dynamic pressure is the pressure the moving air can exert; every aerodynamic force below starts from it.