Induced Drag (Vortex Theory) Calculator

Induced Drag (D_i):

Thrust (T):

Density of fluid (ρ):

Propeller disk area (A):

Freestream velocity (v₀):

How This Is Calculated

$$ D_i = \frac{T^2}{2 \rho A v_0^2} $$ where:

D_i = Induced Drag (N)

T = Thrust (N)

ρ = Density of fluid (kg/m³)

A = Propeller disk area (m²)

v₀ = Freestream velocity (m/s)

Assumptions

The fluid is ideal.
The system is in steady state.
Propeller blades are treated as thin aerofoils.
Propeller rotation is uniform.
Propeller has radial symmetry.

Related Calculators

Helix Angle

Helical Tip Velocity

Induced Velocity

Propeller Efficiency

Torque