Method for setting pitch on a windmill airfoil

Details Method for setting pitch on a windmill airfoil Method for setting pitch on a windmill airfoil

1993-08-18

1994-07-12

Vo, Peter Dungba

Metal working

Method of mechanical manufacture

Impeller making

29407, 298891, 298893, 298896, 298897, 29901, 415 41, 416 61, 416205, 416132B, B21K 302, B23Q 2700, B64C 2780, F03D 1104

Patent

active

053276477

ABSTRACT:
Setting pitch on a windmill airfoil having a longitudinal axis, a rotor blade and a rotor base secured to the rotor blade is accomplished by marking a windmill rotor hub for receiving the rotor base with a reference mark at a location corresponding to a first plane parallel to a plane of rotation of the windmill airfoil in use. The airfoil is positioned along a second plane relative to and substantially completely intersecting the longitudinal axis of the airfoil. The rotor base is marked at a location substantially parallel to the second plane. The airfoil is positioned relative to the windmill rotor hub so that the rotor base is in substantial engagement with the hub. The airfoil is moved relative to the hub so that the mark on the rotor base is aligned with the reference mark on the windmill rotor hub and the rotor base is secured to the windmill hub. An apparatus for marking pitch on a windmill airfoil is also provided.

REFERENCES:
patent: 2499837 (1950-03-01), Sheets et al.
patent: 3231022 (1966-01-01), Schroeter et al.
patent: 3254399 (1966-06-01), Zahuranec
patent: 4366387 (1982-12-01), Carter, Jr. et al.
patent: 4379813 (1983-04-01), Newnham
patent: 4856943 (1989-08-01), Nelson et al.
patent: 4879792 (1989-11-01), O'Connor

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