Acoustic Liners for Turbine Engines

Jones, Michael G [Inventor]Grady, Joseph E [Inventor]Kiser, James D [Inventor]Miller, Christopher [Inventor]Heidmann, James D [Inventor]

关键词: LININGS;    ACOUSTICS;    AIRCRAFT NOISE;    TURBINE ENGINES;    HONEYCOMB STRUCTURES;    PATENTS;    NOISE REDUCTION;    HEXAGONAL CELLS;    HOLE GEOMETRY (MECHANICS);   

RP-ID  :  US-Patent-10,107,139, US-Patent-Appl-SN-15/332,524

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来源: NASA Technical Reports Server

【 摘 要 】

An improved acoustic liner for turbine engines is disclosed. The acoustic liner may include a straight cell section including a plurality of cells with straight chambers. The acoustic liner may also include a bent cell section including one or more cells that are bent to extend chamber length without increasing the overall height of the acoustic liner by the entire chamber length. In some cases, holes are placed between cell chambers in addition to bending the cells, or instead of bending the cells.