Propeller Efficiency Calculator

This calculator estimates the efficiency of a propeller based on input parameters such as thrust, power, and rotational speed.

Input Parameters

Calculation Results

Calculation Formula

Propeller Efficiency (η) = (Thrust × Speed) / Power

Where:
η = Propeller Efficiency (dimensionless)
Thrust = Propulsive force exerted by the propeller (N)
Speed = Linear speed of the propeller (m/s)
Power = Mechanical power input to the propeller (W)

Efficiency Result

Efficiency (η) = N/A

Propeller Efficiency Calculator Usage Guide

Learn how to use the Propeller Efficiency Calculator and understand its working principles.

How to Use the Calculator

  1. Enter the thrust of the propeller in Newtons (N).
  2. Enter the power input to the propeller in Watts (W).
  3. Enter the rotational speed of the propeller in Revolutions Per Minute (RPM).
  4. Click the "Calculate" button to compute the propeller efficiency.
  5. The efficiency is displayed as a dimensionless value between 0 and 1, where 1 indicates 100% efficiency.

Understanding Propeller Efficiency

Propeller efficiency is a measure of how effectively a propeller converts input power into thrust. It is defined as the ratio of the propulsive power (thrust × speed) to the mechanical power input to the propeller. A higher efficiency indicates better performance and lower energy consumption.

Principle of Operation

The calculator uses the formula: Efficiency (η) = (Thrust × Speed) / Power. Here, thrust is the force generated by the propeller, speed is the linear speed of the propeller blades, and power is the mechanical power input. The speed is calculated based on the rotational speed (RPM) and the circumference of the propeller blades.