Four-blade rotor, especially for helicopters

Details Four-blade rotor, especially for helicopters Four-blade rotor, especially for helicopters

1978-11-20

1981-11-10

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Resilient bias or mount

416134A, B64C 2748

Patent

active

042995396

ABSTRACT:
The present four-blade rotor is made up of two blade pairs, each blade pair aving two rotor blades arranged diametrically opposite one another. The blades of each blade pair are coupled to each other by means of a coupling loop for taking up centrifugal forces produced by the rotation of the blades. The present rotor system also has a centering device including a centering body and tension straps for each coupling loop. The tension straps connect the respective loop end to the centering body whereby the two coupling loops may be centered in the rotor head practically without play and without substantially limiting the free movement of the coupling loops.

REFERENCES:
patent: 3470962 (1969-10-01), Cure
patent: 3578877 (1971-05-01), Mautz
patent: 4183718 (1980-01-01), Mautz et al.

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