Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1990-06-01
1992-08-25
Peters, Jr., Joseph F.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244130, 244204, B64C 2106
Patent
active
051411822
ABSTRACT:
An aircraft is provided with an aircraft base pressure drag reduction apparatus including apparatus for ducting boundary layer air on board an aircraft wherein the air produces ram air drag, apparatus for using the air for work, and apparatus for ducting the used boundary layer air to a low pressure area of an aircraft which otherwise produces base pressure drag on the aircraft to reduce the base pressure drag that the low pressure area would otherwise produce. In a more particular embodiment of the invention the low pressure area of the aircraft is in a fan duct of an aircraft gas turbine engine. In the preferred embodiment the low pressure area in a fan duct of an aircraft gas turbine engine is on the pylon fairing and the means for using the air for work includes at least one means for bleeding boundary layer air from the surface of the aircraft for reducing aircraft boundary layer induced drag.
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Bidwell Anne E.
General Electric Company
Peters Jr. Joseph F.
Squillaro Jerome C.
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