euler angles
#
note
rotation
rollaround X-axis rotationpictharound Y-axis rotationyawaround Z-axis rotation
value
- ccw turn left. cw turn right
- ccw rotation value > 0. cw < 0.
- x > 0 forward
the principal axes of an aircraft
The principal axes of an aircraft according to the air norm DIN 9300.
Notice that fixed and mobile frames must be coincident with angles zero.
Therefore, this norm would force also a compatible axes convention in the
reference system

see also
- https://yuiwong.org/2017/04/16/euler-angles/
- https://yuiwong.org/gitlab/math/math/tree/master/geometry/euler-angles