Helicopter blade

Details Helicopter blade Helicopter blade

1978-12-11

1981-02-03

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Tined or irregular periphery

416242, B64C 2746

Patent

active

042485720

ABSTRACT:
A cambered helicopter blade having a swept and tapered tip, and having linear twist throughout the outer 70 percent of the blade span and nonlinear twist inboard thereof.

REFERENCES:
patent: 3065933 (1962-11-01), Williams
patent: 3399731 (1968-09-01), Giles
patent: 3558081 (1971-01-01), Williams
patent: 3721507 (1973-03-01), Monteleone
patent: 3728045 (1973-04-01), Balch
patent: 3822105 (1974-07-01), Jepson
patent: 3902821 (1975-09-01), Robinson
patent: 4077741 (1978-03-01), Lowson et al.
patent: 4130377 (1978-12-01), Blackwell, Jr.
patent: 4142837 (1979-03-01), de Simone

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