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"John Ericsson invented the screw propeller and designed the <em>USS Monitor</em>."&mdash;E. Benjamin Andrews 1895

John Ericsson

"John Ericsson invented the screw propeller and designed the USS Monitor."—E. Benjamin…

A propeller is a type of fan which transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, and air or water is accelerated behind the blade.

Screw Propeller

A propeller is a type of fan which transmits power by converting rotational motion into thrust. A pressure…

The screw, or spiral-bladed wheel, used in the propulsion of steam-vessels.

Screw-propeller

The screw, or spiral-bladed wheel, used in the propulsion of steam-vessels.