Helicopter blade aerofoil

Details Helicopter blade aerofoil Helicopter blade aerofoil

1998-02-13

1999-10-05

Lopez, F. Daniel

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416238, 416243, 416DIG2, 416DIG5, B63H 126

Patent

active

059612908

ABSTRACT:
The coordinates defining the upper surface, lower surface, leading edge configuration and center of circle for a helicopter blade airfoil are given to increase maximum lift coefficient and lift-to-drag ratio, and to reduce noise level.

REFERENCES:
patent: 4314795 (1982-02-01), Dadone
patent: 4459083 (1984-07-01), Bingham
patent: 4744728 (1988-05-01), Lednicer et al.
patent: 5344102 (1994-09-01), Nakadate et al.

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