Method and apparatus for delaying the separation of flow from a

Details Method and apparatus for delaying the separation of flow from a Method and apparatus for delaying the separation of flow from a

1988-06-20

1993-05-11

Barefoot, Galen

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244199, 244204, B64C 2100, B64C 2300

Patent

active

052094383

ABSTRACT:
An active perturbation-producing element on the solid surface is driven to induce oscillations in the boundary layer of the fluid stream about an axis substantially perpendicular to the solid surface, to enhance the mixing of the boundary layer in the fluid stream. The method is particularly applicable for increasing the lift of a wing, but may also be used for increasing the divergence angle of a diffuser.

REFERENCES:
patent: 3130943 (1964-04-01), Berresham et al.
patent: 3362663 (1968-01-01), Wehrmann
patent: 3774867 (1973-11-01), Quinn
patent: 4257224 (1981-03-01), Wygnanski et al.
patent: 4516747 (1985-05-01), Lurz
patent: 4697769 (1987-10-01), Blackwelder et al.
patent: 4741498 (1988-05-01), Gerhardt
patent: 4802642 (1989-02-01), Mangiarotty

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