Induced Drag (Vortex Theory) Calculator

Induced Drag (Vortex Theory) Equation

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

Calculator

Property to Calculate:

Induced Drag (D_i):

Thrust (T):

Density of fluid (ρ):

Propeller disk area (A):

Freestream velocity (v₀):

Equation 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.