Milligan secured a patent for a propeller, consisting of two vanes like those of a smoke jack placed beyond the rudder, and working with a universal joint. In 1825 Jacob Perkins, of Massachusetts ...

The rudder in that altered glider and in the 1903 ... The Wright brothers designed and made their own propellers, aided by the use of their own wind tunnel (which they also designed and built ...

Thordon Bearings has delivered COMPAC water-lubricated propeller shaft and SXL rudder bearings to replace oil- and grease- lubricated bearings onboard McKeil Marine’s bulk carrier Northern ...