What means Elevons?

Elevons are control surfaces on an aircraft's wing that serve a dual purpose by combining the functions of elevators and ailerons. These surfaces are typically found on the trailing edge of the wings and are movable, allowing for control over the pitch and roll of the aircraft.

Here's a breakdown of their functions:

1. Elevator Function:
   • When elevons move symmetrically (both up or both down), they function as elevators.
   • Elevators control the pitch or the up-and-down movement of the aircraft's nose.
   • For example, if both elevons are raised, the nose of the aircraft pitches up; if both are lowered, the nose pitches down.
2. Aileron Function:
   • When elevons move differentially (one goes up while the other goes down), they act as ailerons.
   • Ailerons control the roll or the tilting motion of the aircraft from side to side.
   • If the right elevon goes up while the left one goes down, the aircraft rolls to the right, and vice versa.

The term "elevon" is a combination of "elevator" and "aileron," reflecting the dual role these control surfaces play. Aircraft, such as delta-wing configurations or flying wings, often utilize elevons to simplify the control system and enhance maneuverability. The design provides efficient control over both pitch and roll without the need for separate elevator and aileron surfaces.