Vortex shedding and drag force reduction

Aeronautics and astronautics – Aircraft structure – Details

Reexamination Certificate

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Details

C244S199100, C138S039000

Reexamination Certificate

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06908063

ABSTRACT:
Smoothly curved protuberances (8, 26, 34) are added to an elongate body (2, 16, 18, 20, 22, 32) to modify the fluid flow to reduce the drag Force Fdragand the forces induced by vortex shedding Fvortex. The protuberances can be arranged in diametrically opposed pairs with longitudinally adjacent pairs having different radial directions first to cope with fluid flow from a variety of different directions.

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