Helicopter rotor blade

Details Helicopter rotor blade Helicopter rotor blade

1981-03-13

1984-01-24

Hornsby, Harvey C.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416228, 416237, B64C 2746

Patent

active

044273444

ABSTRACT:
A helicopter rotor blade is disclosed having a root end for attachment to a rotor head, a tip end defining the end of the blade fartherest from the root end with a central portion of aerofoil section extending between and attached to the root end and the tip end to define a rotor radius wherein an outboard region of the central portion has a negative basic pitching moment coefficient of absolute value not less than 0.02 and an inboard region having a basic pitching moment coefficient more positive than that of the outboard region.

REFERENCES:
patent: 3721507 (1973-03-01), Monteleone
patent: 3822105 (1974-07-01), Jepson
patent: 4248572 (1981-02-01), Fradenburgh

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