Rotor blade balance weight assembly

Details Rotor blade balance weight assembly Rotor blade balance weight assembly

1992-12-01

1993-12-28

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

With weight-balancing means

416145, 416500, B64G 1116

Patent

active

052733980

ABSTRACT:
A rotor blade balance weight assembly comprises a weight retention housing (10) having a hollow core (22) and being closed on one end (12). The housing is disposed in an aperture which extends from the upper (52) to the lower (53) airfoil surfaces of the rotor blade (50). The closure end of the housing is contoured to match the airfoil upper surface contour. A stud (70) extends along the central axis of the housing, and washer-like balance weights (72) are received over the stud and secured by a locking nut (75). The open end of the housing is closed by a cover plate (25) that is contoured to match the airfoil lower surface contour, the cover plate being secured to the housing by a nut (78) in locking engagement with the stud. A pair of clips (37) are received within the housing, each clip having a tab surface (40) which extends through slots (42) in the housing, the clips being secured by the locking nut and stud. The cover plate and housing closed end are counter sunk (17,59,27) to provide a smooth airfoil surface.

REFERENCES:
patent: 2435604 (1948-02-01), Rorden
patent: 2494756 (1950-01-01), Gruetjen
patent: 3999888 (1976-12-01), Zincone
patent: 4078422 (1978-03-01), Brunsch et al.
patent: 4150920 (1979-04-01), Belko et al.

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