1. What is a Propeller Torque Calculator?

Definition: This calculator estimates the torque produced by a propeller or rotating shaft based on power input and rotational speed.

Purpose: It helps engineers, mechanics, and hobbyists determine the torque requirements for motors, propellers, and rotating systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (Newton-meters, Nm)
• \( P \) — Power (Watts, W)
• \( n \) — Rotational speed (revolutions per second, rev/s)
• \( \pi \) — Mathematical constant Pi (~3.1416)

Explanation: The power is divided by the product of 2π and rotational speed to calculate the torque.

3. Importance of Torque Calculation

Details: Proper torque estimation ensures proper motor selection, system efficiency, and mechanical safety in rotating systems.

4. Using the Calculator

Tips: Enter the power in Watts and rotational speed in RPM. The calculator automatically converts RPM to rev/s for the calculation.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert horsepower to Watts?
A: Multiply horsepower by 745.7 (1 HP = 745.7 Watts).

Q2: Why is torque important for propellers?
A: Torque determines the twisting force available to overcome water/air resistance and maintain rotation.

Q3: What if I know the torque but need to find power?
A: Rearrange the formula: \( P = 2 \times \pi \times n \times T \).

Q4: Does this work for any rotating system?
A: Yes, this fundamental relationship applies to any rotating mechanical system.

Q5: How does torque relate to thrust in propellers?
A: While torque measures rotational force, thrust depends on additional factors like propeller design and fluid dynamics.