Induced Velocity (Momentum Theory) Calculator

Induced Velocity (Momentum Theory)

Induced Velocity (Momentum Theory) Equation

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

v_i = Induced Velocity (m/s)

T = Thrust (N)

ρ = Density of fluid (kg/m³)

A = Propeller disk area (m²)

v₀ = Freestream Velocity (m/s)

Calculator

Property to Calculate:

Induced Velocity (v_i):

Thrust (T):

Density of fluid (ρ):

Propeller disk area (A):

Freestream Velocity (v₀):

Equation Assumptions

The system is in steady state.
Flow through propeller is purely axial.
The flow is inviscid.
Fluid flow is irrotational.
Propeller blades are thin relative to the span of the propeller.