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sci.lift-equation Calculator
Calculates aerodynamic lift force: L = ½ρv²SC_L from air density, velocity, wing area, and lift coefficient. A Boeing 737 at cruise (85 m/s, C_L = 0.5, wing 124 m²) generates 340 kN of lift — exactly matching its 34-tonne maximum takeoff weight at 1 g.
Inputs
Air Density Kgm3
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
Velocity Ms
Speed in a specified direction (m/s). Required for momentum, kinetic energy, and wave calculations.
Wing Area M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Lift Coefficient
Reference formula or conversion factor shown for context.
Results
lift force (N)
Aerodynamic force perpendicular to the direction of motion. Lift = 0.5 × rho × v^2 × Cl × A. Enables flight when it exceeds weight.
equivalent weight (kg)
The computed weight (gravitational force) or mass.
dynamic pressure (Pa)
Sample size or count used in the calculation.
L = ½ρV²SCl
Reference formula or conversion factor shown for context.
typical Cl range
The difference between the maximum and minimum values.