Full-scale tests with the F 28 aeroplane showed that the intake noise could be reduced by injecting hot air over the duct surface. These reductions were observed with treated as well as untreated ducts. Such a concept could mean a new approach to engine noise reduction. (Kursetz)
A novel concept for suppressing internally generated aircraft engine noise
Ein neues Konzept fuer die Reduzierung der intern erzeugten Geraeusche bei Flugzeugtriebwerken
AIAA-Papers ; 1-5
1977
5 Seiten, 13 Bilder, 2 Quellen
Conference paper
English
Internally Heated Engine Inlet Screen for Aircraft Engines
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