Drive system for changing the diameter of a variable diameter ro

Details Drive system for changing the diameter of a variable diameter ro Drive system for changing the diameter of a variable diameter ro

1992-07-28

1994-04-05

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Radially extensible or retractible rotor working member

416 89, B64C 2754

Patent

active

052999122

ABSTRACT:
A drive system for varying the diameter of a variable diameter rotor has a gear drive system associated with a single coaxial shaft lower end which includes a gear set for increasing or decreasing the speed of rotation of the coaxial shaft relative to the rotor drive shaft to change the length of two or more variable length blades. Utilizing a single shaft system allows a variable diameter rotor drive system to be adapted to gimballed rotors which require shaft flexibility. Since only a single shaft extends through the rotor drive shaft, hub complexity is reduced.

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PCT/US90/04288, Int. Filing date. Jul. 31, 1990.

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