What is the trajectory of the aircraft propeller points relative to the ground?

the tractor is straight.
Each point of the propeller of the aircraft makes a rotational movement along a circle in the XOY plane. In this case, the speed of the points while moving along a circle can change. However, if we imagine that another movement is added to the rotational movement along the circumference – translational, that is, if the points of the screw move not only along the circumference, but also move away along the Z axis from the starting point of observation (relative to the ground). We will get a helix in space.