Retraction/extension mechanism for variable diameter rotors

Details Retraction/extension mechanism for variable diameter rotors Retraction/extension mechanism for variable diameter rotors

1995-12-11

1997-07-01

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Radially extensible or retractible rotor working member

416 88, F04D 2918

Patent

active

056429827

ABSTRACT:
A retraction/extension mechanism (70) for a Variable Diameter Rotor system (10), the Variable Diameter Rotor system (10) having a plurality of rotor blade assemblies (16) mounted to and rotating with a rotor hub assembly (18) about an axis of rotation (20), each rotor blade assembly (16) having inboard and outboard blade sections (24, 22) wherein the outboard blade section (22) telescopically mounts to the inboard blade section (24). The retraction/extension mechanism (70) includes a reeling assembly (80) disposed in combination with the outboard blade section (22) of each rotor blade assembly (16) and an epicyclic gear train (100) disposed in combination 7ith the rotor hub assembly (18) and the reeling assembly (80). The epicylic gea2 train is, furthermore, operative for driving the reeling assembly (80) so as to effect telescopic transition of the outboard blade sections (22) with respect to the inboard blade sections (24).

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Copy of an article from Space/Aeronautics dated Nov. 1969.

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