Bypass duct louver for noise mitigation
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United States of America Patent
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Nov 3, 2020
Grant Date -
Feb 8, 2018
app pub date -
Sep 26, 2016
filing date -
Aug 8, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A bleed air system is disclosed for a turbofan engine having a bypass duct. The bleed air system includes a bleed air conduit having an inlet end connected to the bypass duct and a bleed air flow control valve disposed downstream of the inlet end, and a louver assembly disposed within the opening at inlet end of the bleed air conduit. The louver assembly includes an airfoil-shaped louver blade which extends across the opening in a direction transverse to the flow direction within the bypass duct. A reinforcing rib is attached to the louver blade and extends across the louver assembly in a direction generally parallel to the flow direction.
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