Flight Control Surfaces - Elevons
Delta winged aircraft use elevons as primary flight controls for
roll and pitch.
Elevon: Delta winged aircraft can not use conventional 3 axis flight
control systems because of their unique delta shape. Therefore, it uses a
device called an elevon. It is a combination of ailerons and elevators.
The elevon is used as an aileron. Ailerons control motion along the
longitudinal axis. The longitudinal axis is an imaginary line that runs
from the nose to the tail. Motion about the longitudinal axis is called
roll.
The elevon is also used as an elevator. Elevators control motion along the
lateral axis. The lateral axis is an imaginary line that extends crosswise,
from wingtip to wingtip. Motion about the lateral axis is called pitch.
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