Flexible bladed fan with increased natural frequency

Details Flexible bladed fan with increased natural frequency Flexible bladed fan with increased natural frequency

1975-06-30

1977-07-26

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Sectional, staged or nonrigid working member

416240, 416DIG3, F04D 2936

Patent

active

040379876

ABSTRACT:
A flexible bladed fan comprising blade assemblies having a reinforcing member contacting each blade along the leading portion thereof, the blade and reinforcing member spaced apart at a gap behind the leading portion and contacting again at a second position behind the gap, the reinforcing member biasing the blade in a downstream direction at the second position.

REFERENCES:
patent: 2374342 (1945-04-01), Gaubatz
patent: 3044557 (1962-07-01), Posh
patent: 3406760 (1968-10-01), Weir
patent: 3490686 (1970-01-01), Weir
patent: 3594098 (1971-07-01), Pratinidhi
patent: 3664165 (1972-05-01), Harvill et al.
patent: 3679321 (1972-07-01), Strick
patent: 3698835 (1972-10-01), Kelly
patent: 3773435 (1973-11-01), Wooden
patent: 3799697 (1974-03-01), DeJong
patent: 3827826 (1974-08-01), Strick
patent: 3891349 (1975-06-01), Woollenweber
patent: 3910718 (1975-10-01), MacEwen
patent: 3914069 (1975-10-01), Arrington et al.

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