I only know that they are represented by the "wing" line, and their format but as to the meaning of the numbers no clue so far sorry.
(from tests (some time ago) I concluded that you can only add angular velocity with wings to a car so rotation only, an actual flying plane with proper "wing" lines is impossible (it is also impossible to create a car with enough downforce for it to maintain grip on the ceiling of a tunnel (as F1 cars could theoretically do)) only the angle and the intensity of the rotation can be changed as far as I know but this is not conclusive I didnt decode much of the code handling wings)
