Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1992-05-13
1994-09-20
Huppert, Michael S.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244204, 244209, 244 35A, B64C 2106, B64C 2104
Patent
active
053482565
ABSTRACT:
A supersonic aircraft having highly swept subsonic leading edge portions of the wings provided with boundary layer control suction slots. When the airplane is operating at high angles of attack under circumstances where noise is objectionable, air is drawn in through the suction strips to alleviate separated air flow and substantially eliminate (or at least alleviate) vortices that would otherwise develop over the upper wing surface. This improves the L/D ratio and permits the engines to be at a lower power setting, thus alleviating noise. There are shown a double delta planform configuration, and an arrow plan form configuration. Also, the boundary layer control suction can be used in conjunction with laminar flow control suction.
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Ansley Virna Lissi
Huppert Michael S.
The Boeing Company
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