New answers tagged aircraft
Forget gravity for a little while, and put yourself in the pilot seat of an aerobatic airplane. The plane has so-called "elevators" at the tail or "empenage", and those are connected to the stick that you hold. What the elevators do is determine your angle of attack - the angle at which your wing meets the air stream. If you pull back, the elevators move ...
The problem with such a maneuver is that you're kicking in some strong g-forces there. Once you you hit an angle of 60$^\circ$ (the common banking angle for a commercial airliner), you are hitting 2G's. Past that, it goes exponentially: (source--load factor is the hypotenuse to gravitational & centrifugal forces. Note that the typical person can only ...
You're talking about the longitudinal axis or "roll axis". Its value is the "bank angle" or "roll angle". Of course there's no limit on that. Its first derivative is the "roll rate". In fighter aircraft this is as high as 720 degrees/second. I can't think of any upper limit on this, because you could make the whole wing an aileron, and if you tilted it far ...
There are the so-called ionocrafts based on the Biefeld-Brown effect, your suggestion sounds sort of similar. The thrust per unit area tends to be incredibly weak, but see here and here for some speculative proposals about actually using them for practical purposes, along with this NASA paper on the Biefeld-Brown effect.
Top 50 recent answers are included