Aircraft propeller and blade element

Details Aircraft propeller and blade element Aircraft propeller and blade element

1991-11-18

1992-11-10

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Reverse curve surface

416223R, 416243, 416Dig2, B64C 1116, B64C 2746

Patent

active

051619539

ABSTRACT:
A propeller blade element which virtually eliminates stall conditions. The rotatably driven blade element employs a long straight extended sharp leading edge from hub to tip, without helix, to insure blade laminar fluid flow without vortice formation or leading edge stagnation. The extending leading edge provides separated upper and lower laminar air flow to a "C" shaped blade configuration. The blade element in one form employs a proportionally upwardly curved trailing edge which provides accelerated flow of the high pressure air on the face of the blade, thus increasing the thrust over conventional blade elements.

REFERENCES:
patent: 1119826 (1914-12-01), Howell
patent: 1853607 (1932-04-01), Ferreby
patent: 2157999 (1939-05-01), Charavay
patent: 4123198 (1978-10-01), Harbord
patent: 4451206 (1984-05-01), Phileppe et al.
patent: 4451207 (1984-05-01), Hoffmann

Affiliated with

Also associated with

Rating

Aircraft propeller and blade element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aircraft propeller and blade element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aircraft propeller and blade element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2289910