Surface flow diverting and static charging ducted pores on...

Details Surface flow diverting and static charging ducted pores on... Surface flow diverting and static charging ducted pores on...

2006-08-25

2009-12-29

Mansen, Michael R (Department: 3644)

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

C244S207000, C244S208000, C244S209000, C416S09000A, C415S914000

Reexamination Certificate

active

07637462

ABSTRACT:
Air pressure distribution for airfoil lower and upper surfaces is utilized to divert airflow using ducts formed in space-curve shapes placed inside the airfoil volume, through span-wise located inlets from high pressure areas on the airfoil lower surface near the leading edge and through chord-wise spaced inlets on the side face of the airfoil wing tip correspondingly to the side face of the airfoil wing tip through chord-wise spaced outlets on the side face of the airfoil wing tip and to span-wise located outlets to the low pressure areas on the airfoil upper surface. Triboelectric materials on the wing surfaces are employed to static charge the air in drag. Inside the ducts, the employment of either triboelectric linings and materials, or HV-supplied electrodes, or both, help to static charge the diverted air flow to and from the airfoil wing tip side face to diffuse wing tip vortex core early.

REFERENCES:
patent: 3936013 (1976-02-01), Yuan
patent: 3974986 (1976-08-01), Johnstone
patent: 5167387 (1992-12-01), Hartwich
patent: 5326224 (1994-07-01), Lee et al.
patent: 6948906 (2005-09-01), Leishman et al.
patent: 2004/0197194 (2004-10-01), Leishman et al.
patent: 2006/0062671 (2006-03-01), Lee et al.

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