How to use the wind turbine tip speed ratio calculator
Find the tip speed ratio of a wind turbine from its rotor speed, radius and wind speed. Enter rotor speed, rotor radius, wind speed in the fields above; the tip speed ratio, blade tip speed are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “tip speed ratio”, “wind turbine tip speed”, “rotor speed to wind speed”, “calculate wind turbine tip speed ratio”, “find tip speed ratio”.
Formula
Variables
- rpm — Rotor speed (rpm)
- R — Rotor radius (m)
- v — Wind speed (m/s)
Worked example
With rotor speed = 15 rpm, rotor radius = 20 m, wind speed = 8 m/s, the calculator gives tip speed ratio ≈ 3.926991; blade tip speed ≈ 31.41593 m/s.
Frequently asked questions
What is the wind turbine tip speed ratio calculator used for?
Find the tip speed ratio of a wind turbine from its rotor speed, radius and wind speed. It helps with questions such as “tip speed ratio”, “wind turbine tip speed”, “rotor speed to wind speed”.
What is the formula for the wind turbine tip speed ratio calculation?
Tip speed ratio = 2 × π × rpm / 60 × R / v. Blade tip speed (m/s) = 2 × π × rpm / 60 × R. Here rpm is rotor speed (rpm), R is rotor radius (m), v is wind speed (m/s).
What inputs do I need for the wind turbine tip speed ratio calculator?
You need rotor speed in rpm, rotor radius in m, wind speed in m/s. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the wind turbine tip speed ratio calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the wind turbine tip speed ratio result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.