Propeller Slip Calculator

Formula

The formula to calculate the Propeller Slip is:

\[ \text{Slip} = \left(\frac{N - S}{N}\right) \times 100 \]

Where:

\(\text{Slip}\) is the Propeller Slip (%)
\(N\) is the Theoretical Speed of the Propeller
\(S\) is the Actual Speed of the Propeller

What is Propeller Slip?

Propeller slip refers to the difference between the theoretical distance a propeller should move in one revolution and the actual distance it does move. This discrepancy is due to the fact that water or air is a fluid medium, and when a propeller rotates, it pushes against this medium to generate thrust.

Example Calculation

Let's assume the following values for an example:

Theoretical Speed (N) = 1000 RPM
Actual Speed (S) = 900 RPM

Using the formula:

\[ \text{Slip} = \left(\frac{1000 - 900}{1000}\right) \times 100 = 10 \% \]

The Propeller Slip is 10%.