Accession Number : ADD017852

Title :   Marine Propeller.

Descriptive Note : Patent, Filed 24 Nov 78, patented 7 Nov 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Williams, Robert M ; Rogers, Ernest O ; Sevik, Maurice M

Report Date : 07 Nov 1995

Pagination or Media Count : 4

Abstract : A marine propeller using the circulation control principle of blowing tangentially over a Coanda surface at the trailing edge of each blade to develop high blade lift (thrust). Each blade has internal chambers and two blowing slots so that blowing is controllable for forward and for reverse thrust without reversing rotational direction of the propeller. This propeller is capable of generating much greater thrust and ship speed at lower RPM and noise levels than conventional propellers.

Descriptors :   *MARINE PROPELLERS, *PATENTS, VELOCITY, CONTROL, SHIPS, BLADES, SURFACES, INTERNAL, LEVEL(QUANTITY), SLOTS, NOISE, HIGH LIFT, CIRCULATION, CHAMBERS, TRAILING EDGES, PROPELLERS, COANDA EFFECT, THRUST REVERSAL

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE