I'm a little sad sometimes.
I used the word 'compression' also if I knew that it was not
correct (or, say better, totally wrong) but I did not want to spent too much
time on boring vocabolary and I hoped on your ability to catch the true meaning.
ANYONE USE FLAPS IN THIS WAY OR NOT?
flying the p-38, i use flaps almost constantly during a fight. you need to be careful with them though, as they can get you in trouble, just as fast as they can get you out of trouble.
at 250, i can drop 1 notch, which will force my nose up. now, remember up doesn't always mean "up". up means "up" to the airplanes perspective. so if you're banked 90 degrees to the right, "up" to the airplane is sideways.
this can help with the initial turn, as it helps bring your nose to bear quicker.
when i'm in a turn fight, i use the flaps to help limit my speed coming down from a loop, if i'm trying to line up a con. i use them going up, to help me hang on the props, as i rope the con.
the first two notches produce more lift than drag. once you hit that third notch, now you're producing more drag than lift. they're still helpful though, as with the right combinations of power, control inputs, and flap usage, you can really move that airplane around.
not all airplanes have more than a single flap setting. hurricanes, and spitfires are either all the way down, or all the way up. zeros are incremental.
hope some of this helps?