NACELLE FOR A POWER PLANT WITH A VARIABLE-AREA FAN NOZZLE
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United States of America Patent
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Issued Date -
Apr 18, 2013
app pub date -
Jul 20, 2012
filing date -
Jul 22, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A power plant includes a nacelle with a bypass turbojet engine having a ducted fan with a low compression ratio. A secondary flow, drawn in and accelerated by the fan, is channeled through a secondary duct installed in the nacelle between the inner surface of the nacelle and the outer surface of the turbojet, toward a fan nozzle. The power plant has at least two moving parts on either side of a vertical plane of symmetry of the nacelle, at least one moving part being able to adopt one of a discrete number of positions, the moving part containing or releasing a portion of the secondary flow, depending on the moving part's position. A control unit controls a different displacement of each of the moving parts between their possible positions in order to create asymmetry of the moving parts relative to the vertical plane of symmetry.
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