Aeronautics and astronautics – Miscellaneous
Patent
1987-07-09
1989-08-22
Barefoot, Galen L.
Aeronautics and astronautics
Miscellaneous
244130, 350319, 350584, B64D 4700
Patent
active
048588504
ABSTRACT:
Apparatus for reducing drag and improving optical observation through an open aircraft port includes a ramp mounted on the port downstream edge, orifices or slots in the ramp surface interconnected by a manifold, and an associated air pump for withdrawing air from the free shear layer through the ramp to provide reattachment of the free shear layer at a preselected location on the ramp. The apparatus also can include conduits for supplying the extracted air to apertures located in a lip on the port upstream edge for injecting air along the free shear layer to control detachment.
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Boeing Doc. No. D-180-28729, "Free Shear Layer Aero-Optic Jitter", P. Cassady, Apr. 1985.
Boeing Doc. No. D-180-28220-1, "Angular Deflection of A light Ray Through a Free Shear Layer", P. Cassady, Apr. 1985.
Boeing Doc. No. D-180-28219-1, "Compressible Turbulent Shear Layer Growth Over Optical Ports", P. Cassady, Apr. 1985.
Barefoot Galen L.
The Boeing Company
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