Used on some fighters, like the f-14 (to my knowledge, i think it did... But i might be wrong), the concord, and the B1. This is just a concept, and i havent seen it of many aircraft on simple planes... So feel free to use them but if you do can u give a shout out/ credit to me. (Just leaving you with basic information here: Elevons are aircraft control surfaces that combine the functions of the elevator (used for pitch control) and the aileron (used for roll control), hence the name. They are frequently used on tailless aircraft such as flying wings. An 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)