Transcavitating propeller

Details Transcavitating propeller Transcavitating propeller

1980-08-27

1981-10-06

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Irregular, flanged or channel forming blade surface

416175, 416236A, B63H 118

Patent

active

042932807

ABSTRACT:
A propeller blade for a multi-bladed propeller comprises a radial inner pion, a radially outer portion and a transition portion extending therebetween. Generally, the leading edge of the blade portions are colinear and the trailing edges of the inner and outer blade portions are offset from each other so that shoulders are defined on the transition portion and the outer blade portion has a higher blade angle of attack than the inner blade portion. The shoulders extend from the leading edge to the trailing edge of the transition for providing flow stability and blade reinforcement.

REFERENCES:
patent: D138866 (1944-09-01), Orsett
patent: 329822 (1885-11-01), De Bruignac
patent: 1688639 (1928-10-01), Larson
patent: 1872749 (1932-08-01), Karageorge
patent: 2327453 (1943-08-01), Presser
patent: 2421798 (1947-06-01), Marshall
patent: 3065723 (1962-11-01), Tulin
patent: 3077173 (1963-02-01), Lang
patent: 3306246 (1967-02-01), Reder
patent: 3572962 (1971-03-01), Embleton et al.

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