Technical Report Bowman, Cheryl L. and Jones, Michael G. Glenn Research Center; Langley Research Center NASA/TM-2009-215818, E-17080 WBS 561581.02.08.03.15.03 METAL FOAMS; POROSITY; ACOUSTIC ATTENUATION; ACOUSTIC PROPERTIES; ABSORPTION SPECTRA; DURABILITY; LININGS; ALLOYS; ROTORS; BYPASSES
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