Use these calculators to turn design decisions into usable numbers. Each one fits a specific moment in the method, when you need a weight target to anchor wing loading, or a drawable planform to take to the drawing board.
Available tools
Mission Weight Estimator
Estimate a target flying weight from mission and wingspan. Use it before committing to components, it gives you a realistic weight range to anchor wing loading and avoid building toward a number that won’t fly.
Open the Mission Weight Estimator
Wing Chords Calculator
Calculate root chord, tip chord, and MAC from wingspan, wing area, and taper ratio. Use it once wing area and taper are decided, it’s the step where ratios become dimensions you can draw.
Open the Wing Chords Calculator
How to use these tools
Start with the mission. Then use the calculators to support the design decisions already made.
A useful order is:
- Define the mission.
- Estimate the target flying weight.
- Choose wing area and wing loading.
- Calculate the wing chords and mean aerodynamic chord.
- Check balance and stability before locking the layout.
Numbers come after decisions. The calculators are here to make those decisions easier to test.
RC Plane Designer evolves as chapters are refined and connected.
The project began as a personal notebook used while designing scratch-built RC airplanes.
If you are learning from it or building with it, your feedback helps shape what comes next.
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