Originally Posted by micro
Normally drag line of action is below cg, so it creates nose up moment.
- try drawing that out on paper and maybe edit your post?
Originally Posted by italia
When the tailplane is producing a downforce, which in most airplanes it is, when you increase your AoA on the wing, the tailplane's AoA will decrease.
- i think it would help you and others to avoid MFS's 'back axle' effect if you defined your axes and values, since we are talking maths/physics here. Let's make it simple - define positive AoA for a flat plate section and then 'increasing' AoA in terms that will work in equations. Use 'traditional' a/c stability axes for simplicity? Then we can discuss raising the nose above the horizon while S&L - but inverted..........................