At the top of a barrel roll your plane is up side down and it points 90 degrees respect its initial trajecotory.
If You don't want to finish the barrel roll, then what can you do?
Discuss.
Hi lulu
This is probably not the answer you were looking for, but given the information in your question it is the the simplest option. You stop barrel rolling by unloading the G, and you do that by centering your stick. If you don't want to remain inverted you could then roll the aircraft until you are flying straight and level at 1g.
Of course that ignores an important point... Why were you barrel rolling in the first place?
I suspect there may be an enemy aircraft in the picture somewhere, so for example....
If you were doing the barrel roll defensively and you are hoping that an approaching high speed bandit will overshoot, then timing your exit from the barrel roll so that you get a shot is critical, and it doesn't matter what stage of the roll you are at, or if you are inverted or not, the only thing that matters is lining up for the shot as the bandit overshoots. You do that by deliberately rolling around the bandit's anticipated flight path, and then unloading for the shot as he overshoots.
There are a number of other reasons you might be maneuvering in the way you described, but the catch is, you can't think about air combat without an enemy aircraft. That is where things get complicated, because the "what can you do?" part of your question then depends on three things... Geometry, Energy, and Time. The geometry part is simply the bandits position relative to you and you describe that using range, aspect angle, and angle off. Those are the way fighter pilots describe the position and orientation of an enemy aircraft relative to their own position. The energy part relates to the banits speed and altitude relative to you. You don't think in absolutes here, your perception needs to be relative, so that you know if the bandit is faster, or much faster, higher or much higher than you are and so on. The time part relates to the timing involved, basically do you have time to do what you want to do or not, and Boyd's OODA loop may be a factor here.
One of the reasons that you can open almost any thread on air combat and see many different responses to the same question, is that the conditions are rarely well defined, and many good responses can all be perfectly valid based on a wide variety of different conditions that were left to the assumption of the responders. To make it even worse, even if you state the initial conditions very clearly, pinning down the aircraft's positional geometry, and their energy states, you might still get 10 different answers from 5 different fighter pilots and all of them good.
Having said that, if you have something specific in mind that you want help with, you can help others to help you by providing as much information as you can.... Preferably a film of the event you want help with. If you need to paint the picture using words, use the following check list:
Geometry:
1) Bandits Range, how far away in yards as indicated by its icon?
2) Bandits position, what is the Bandit's aspect angle relative to you?
3) Bandits Orientation, what was the bandits angle off?
Energy:
1) How fast were you?
2) How fast was the bandit, slower, faster, much faster?
3) How high was the bandit relative to you, lower, higher and perhaps an estimate in feet?
Time:
1) What were the aircraft types involved, this will provide information about the relative performance such as turn rates and roll rates etc?
2) What other aircraft were nearby, what types and how far? Were you working with a wingman, or did the bandit have a wingman?
3) Your fuel and ammo status, were you bingo, winchester, or did you only recently take off with a full load of fuel.
You can probably see that the number of possible permutations arising from those factors could lead to a very large number of possible responses, so it pays to try and narrow it down as much as possible.
Hope that helps.
Badboy
