Elevon Research Paper

The Elevons are present in an aircraft control surfaces that which will combine the functions of a elevator and a aileron. These elevons are frequently utilized on the tailless aircraft such as flying with wings. The elevon that is not part of the main wing, but instead is a separate tail surface, is a stabilator (but stabilators are also used for pitch control only, with no roll function, as on the Piper Cherokee series of aircraft). The word "elevon" is a portmanteau of elevator and aileron.

Elevons are installed on each side of the aircraft at the trailing edge of the wing. When moved in the same direction (up or down) they will cause a pitching force (nose up or nose down) to be applied to the airframe. When moved differentially, (one

Their up-travel accelerates the air on the underside of the horizontal tail, reducing the pressure there and raising the pressure above the tail. The result is a down force from the tail. This is shown in Figure 3.1A by the force vector labeled S = E to denote that the sum of the forces (S) comes exclusively from the elevator (E).

When a V-tail Bonanza pilot pulls on the yoke, both ruddervators deflect as shown in Figure 3.1B. This causes the left tail member to pull down and left and the right member to pull down and right. The sum of the forces, S, is straight down, with the yaw effects from left and right ruddervators (L and R) exactly canceling. A push on the yoke works similarly. show right rudder pedal inputs. In the conventional tail, the rudder moves to the right. This creates a low pressure area (or "lift") on the left side of the vertical tail, which draws the tail left or yaws the nose right about the airplane's center of gravity. The sum of the forces (S) is due to rudder (U) only. Right rudder pedal input in the V-tail will lower the right ruddervator and raise the left one. The effect is an up and left force from the right tail member and a down and left force from the left member. The sum (S) of the left and right tail forces (L and R) has the effect of pushing the tail