Four-blade rotor, especially for helicopters

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

1978-11-20

1981-02-17

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416138, B64C 2748

Patent

active

042511887

ABSTRACT:
The present four-blade rotor structure comprises two pairs of rotor blades. iametrically opposite each other located blades form a pair and the blades of a pair are connected to each other by coupling belts which are tension resistant and torsionally yielding. One coupling belt extends substantially horizontally whereas the other extends substantially vertically. The coupling belts are centered in the rotor head by respective centering bodies. The centering bodies are connected to their respective belt by bearing elements capable of taking up pressure loads while simultaneously permitting a blade angle adjustment. In a modification the bearings may be slide bearings.

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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