Airfoil

Details Airfoil Airfoil

1983-09-30

1987-02-10

Basinger, Sherman D.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244123, B64C 314

Patent

active

046417966

ABSTRACT:
An airfoil member having an upper surface contoured to create lift. The lower airfoil surface has a lower forward surface portion which, in a rearward direction, curves concavely into an expanded convexly curved lower surface belly portion. This enables a primary load carrying member (e.g. a spar) to be located in the belly section and have a relatively greater depth, without unnecesary sacrifice of aerodynamic performance. In another embodiment, both the upper and lower surfaces of the airfoil are contoured with the expanded belly portion.

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