Thrust Formula:
From: | To: |
Definition: This calculator estimates the thrust generated by an RC aircraft propeller based on air density, propeller area, air velocity, and thrust coefficient.
Purpose: It helps RC aircraft designers and hobbyists determine propeller performance and select appropriate components.
The calculator uses the thrust formula:
Where:
Explanation: Thrust is proportional to air density, propeller area, and the square of air velocity, scaled by the thrust coefficient.
Details: Proper thrust estimation ensures adequate aircraft performance, climb rate, and maneuverability while preventing motor overload.
Tips: Enter air density (default 1.225 kg/m³ at sea level), propeller area, air velocity, and thrust coefficient (default 0.1). All values must be > 0.
Q1: How do I calculate propeller area?
A: Area = π × (propeller diameter/2)². Convert diameter to meters first.
Q2: What's a typical thrust coefficient?
A: Most RC propellers have C_T between 0.05 and 0.15, depending on design and pitch.
Q3: How does altitude affect thrust?
A: Higher altitudes have lower air density (ρ), reducing thrust. Adjust ρ accordingly.
Q4: What air velocity should I use?
A: Use the propeller's induced velocity or aircraft's forward speed, depending on calculation purpose.
Q5: How does this relate to motor power?
A: Thrust × velocity gives power. Ensure your motor can provide sufficient power for calculated thrust.