Compensated propeller nozzles or ducts

Details Compensated propeller nozzles or ducts Compensated propeller nozzles or ducts

1974-08-01

1976-12-28

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

Working fluid bypass

416189, 60221, B63H 514

Patent

active

039998843

ABSTRACT:
A propeller nozzle provided with duct means whereby fluid may be circulated from the area of higher pressure adjacent the lowermost propeller blade position to an area of lower pressure adjacent the uppermost blade positon in order to equalise the pressure differential across the vertical diameter of a propeller disc resulting from the different depth of submergence. This reduces the amplitude of cyclic stress acting upon the roots of the propeller blades.

REFERENCES:
patent: 1730748 (1929-10-01), Schmidt
patent: 2566525 (1951-09-01), Kort
patent: 2756713 (1956-07-01), Kort
patent: 3508517 (1970-04-01), Hannan
patent: 3672169 (1972-06-01), Ufer
patent: 3677660 (1972-07-01), Taniguchi et al.

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