I saw a plane on YouTube that only had airlines or maybe there were elevants there was no elevator or rudder. How do you steer them without an elevator? They were towards the back so maybe they were elevants but they were pretty wide like the whole length of the wing pretty big wings it was a flying wing. How does the control system for that work? Are the aileron and elevator deflection voltages some and scaled together with some algorithm or op amp or voltage divider circuit before they are applied to the elevons?