Funked we went over that a while ago buddy.
The effect you are reffering to is one of the depth perception ques, in this case one called: "linear perspective", this is the narrowing of parallel lines as they go for long distances- one often sees this in films where a straight road narrows into a V at long distances.
Linear perspective doesn't work that close in, as in the case of 109 cockpit bars.
From only a foot or so away, which is how far a 109 pilots head is vs the windshield, they would still be vertical.
Anyone interested can this simple test as soon as you get a chance. All you need is a book or magazine about 8X12 inches which is pretty close to 109 windshield dimensions and proportions.
Simply hold the book at arms length at eye level with the longer side down.
Then tilt the book at about 40 degrees towards you, simulating the 109 windshield angle.
Observe the relative "narrowing" from top to bottom. There isnt any, and certainly nothig even close to the AH effect.
Also do this test with one eye, you will see the same thing- confirming this is a monocular depth cue.
Basically the 109 windsheld narrwing in AH is extremly overdone, in RL the efect was nonexistant from the distances a 109 pilot sat from windshield.
I must also make it perfectly clear this is a monocular depth que, that is, its not dependant on steroscopic 3D vision- thus it works with anything including cameras and 2D monitors.
Its wrong and should be fixed.