RC Airplane Design Calculator

The RC Airplane Design Calculator helps with early-stage electric airplane sizing. It is meant for builders who are planning a new model, modifying an existing design, or checking whether a proposed airplane size and power target are realistic.

What this calculator does

Before detailed CAD or construction, a modeler often needs starting values for wingspan, wing area, target weight, wing loading, and power loading. This calculator provides a structured way to think through those numbers so the model is not designed around a motor or battery choice that does not match the aircraft. Enter the design style, size, weight target, power goal, and related assumptions, then review the calculated design guidance. Example: if a scale-style airplane target weight produces a high wing loading, the builder can increase wing area, reduce weight, or adjust the performance goal before the design is locked in. Use this as a concept tool, then validate the final design with real aerodynamic judgment and flight testing.

In practical terms: It gives starter design numbers for RC airplane sizing, wing loading, weight, and power planning.

How to use it

Enter the design target values and review whether the output matches the type of model you intend to build.

Example calculation

Use it to compare a trainer-style wing loading against a sport model wing loading before choosing the final wing area.