Rotor blade sling

Details Rotor blade sling Rotor blade sling

1987-11-16

1989-04-04

Cherry, Johnny D.

Handling: hand and hoist-line implements

Spacing hoist bar or frame

With center of gravity adjustment

294 6721, 294 6722, 294 675, 294 816, B66C 110

Patent

active

048180041

ABSTRACT:
A sling for attachment to a hoist for accurately adjusting the position of a helicopter rotor blade to ease the installation of the rotor blade in the rotor hub while attached to a helicopter. Blade orientation is adjustable in the sling by providing a spherical clamp which is attached to the hoist and a spherical race or sliding surface bearing on the spherical clamp and attached to the sling. The sling adjusts the blade position so that the center of gravity of the blade is located approximately at the center of the radius forming the surface of the spherical race. Hence, only the axis being adjusted is effected.

REFERENCES:
patent: 2412555 (1946-12-01), Baker
patent: 2844404 (1958-07-01), Haugh et al.
patent: 2986422 (1961-05-01), Renfroe
patent: 3123392 (1964-03-01), Jacobson
patent: 3724891 (1973-04-01), Brickley
patent: 3837697 (1974-09-01), Goodrich

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