Aeronautics and astronautics – Miscellaneous
Patent
1985-09-30
1991-12-03
Barefoot, Galen L.
Aeronautics and astronautics
Miscellaneous
2441291, 244130, 244207, 372104, 359509, 359894, B64C 2104
Patent
active
050693972
ABSTRACT:
In an aero-optical interface for an aircraft optical aperture, the separation of the upstream boundary layer from the edge of the aperture creates a region of turbulance which persists downstream over the full area of the aperture. This invention promotes an early develpment of a steady velocity profile at the upstream aperture edge which is approximately the same as a stable, self-similar shear flow velocity profile over the entire aperture. This is accomplished by thickening the boundary layer upstream of the aperture, and blowing a curtain of air across the aperture from its upstream edge at the point of separation of the boundary flow. This produces a shear flow region foot that causes the overall velocity profile to be equal to a stable self-similar free shear layer.
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Barefoot Galen L.
Neary J. Michael
The Boeing Company
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