NASA NTRS · 19680046934
Turbofan-engine noise suppression.
Abstract
Program for perceived noise levels reduction on ground of turbofan powered commercial transport by acoustically absorptive lining of ducts
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Marsh, A. H., Pendley, R. E.. 1968-06-01. Turbofan-engine noise suppression.. https://ntrs.nasa.gov/citations/19680046934
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