Etymology:
The word "elevon" is a portmanteau of the words "elevator" and "rudder."
Meaning:
An elevon is a type of flight control surface that combines the functions of an elevator and a rudder. It is a hinged flap on the trailing edge of an aircraft wing that can be moved up or down to control both pitch and roll.
Origin:
The concept of the elevon was first developed by the French aviation pioneer Gabriel Voisin in 1910. He called it an "aileron tab," but it was later re-named "elevon" by Otto Lilienthal.
The elevon was initially used on gliders and small aircraft. However, it was not until the development of jet-powered aircraft that elevons became widely adopted. Jet aircraft require larger flight control surfaces than propeller-driven aircraft, and elevons provide a more efficient and effective way to control both pitch and roll.
Today, elevons are used on a wide variety of aircraft, including fighters, bombers, and transports. They are also used on some unmanned aerial vehicles (UAVs).
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