Seamless acoustic liner

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9273631
APP PUB NO 20130075193A1
SERIAL NO

13582227

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Abstract

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The invention relates to a method of manufacturing a composite acoustic panel employed in an inlet passage of a gas turbine engine (1). The acoustic panel comprises a permeable face-layer (8), an impermeable backing sheet (9) and a sound absorbing layer (10) disposed therebetween. The method comprises a double polymerisation process for the face-layer and the remainder of the acoustic panel and finally a perforation step to perforate the face-layer according to a pre-determined perforation distribution (11.1, 11.2, 11.3, 11.4, 11.5).

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Patent Owner(s)

Patent OwnerAddress
GKN AEROSPACE SERVICES LIMITEDSHIRLEY SOLIHULL B90 8BG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Vavalle, Armando East Cowes, GB 1 20

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