Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4910651.

blender remix from rough 3D scan of propeller with 24-29 inch pitch and 14.5 inch Diameter.

3 versions for flexibility version 3 is seperate blade from hub. version 4 has the blades rotated 120 degrees about the hub and unioned. version 5 is same as 4 except the hub length has been reduced to begin at the beginning of the blades to reduce the need for support.