For each a given speed, there is a thrust setting and an AoA that will result in level flight. Because we are rotating the aircraft to reflect the Lift (or using aircraft rotation to generate the Lift), the aircraft will be angled up slightly in level flight. You can change this by rotating the wings back such that, at normal cruising speed, the aircraft is level. However, this will mean that, in inverted flight, you will have to rotate the aircraft even more to achieve level flight.
If thrust or AoA is increased separately, the aircraft will initially climb and start slowing down. Because gravity is the enemy of climbing flight, the aircraft will slow down and the flight path will diverge from the aircraft orientation. When the AoA exceeds the maximum, the aircraft will stall and (in general), will rotate forward until gravity becomes a friend and helps the aircraft speed up and the aircraft orientation is more aligned with the flight path. This is referred to as porpoising.
You can make the aircraft "stall proof" by preventing the aircraft pitch from diverging from the flight path by more than the AoA maximum. In effect, you are creating a smart pilot who will rotate the aircraft to make sure that the aircraft orientation does not exceed the AoA maximum. The aircraft will still porpoise, but the changes will be less drastic.
If thrust or AoA is decreased separately, the aircraft will descend, aided by gravity.
If the thrust and AoA are both increased or decreased proportionately, the aircraft will climb or descend at a reduced speed. If they are increased enough, the aircraft will loop.
When you put the aircraft in a level banked turn, the turn rate should equal the rate defined by this equation:
- Turn Rate = Degrees(Tan(Bank)) * Gravity (g) / Speed (V)
Thus, at the speed of 250 mph, a Bank of 30 degrees should yield a turn rate of 2.903 degrees/second. The ACflytBasicDemo shows that ACflyt is correctly computing this turn rate. The reason an aircraft turns when banked is because the aircraft is being acted on by two forces: Lift and Gravity. When you bank, your Lift is no longer fully vertical. This means that you have to increase Lift so that the vertical component of Lift is still enough to offset the pull of Gravity. But, the horizontal component of Lift causes you to turn. Another way to explain the result is to consider that, if there were no Gravity, increasing the Lift would cause the aircraft to both climb and turn. Gravity pulls the aircraft back into level flight, but - because Gravity is vertical - it does not change the horizontal rate of turn.
Once you are in a level turn, then increasing or decreasing thrust will generally not change the speed or turn rate, but will merely cause the aircraft to climb or descend in a spiral turn. Increasing the AoA will generally not change the speed or turn rate, but the aircraft will climb and descend as it seeks equilibrium.
The best turn rate can be achieved with a 90 degree banked turn using maximum Thrust and AoA. The increased Thrust will be largely offset by the increased Induced Drag and the aircraft will probably slow down, further increasing the turn speed.
There are a couple of limitations. First, the turn speed will be limited by the G-tolerance of the pilot. Second, since none of the Lift is directed downward, the aircraft is falling vertically, which means that you will eventually run out of altitude.