Graphene based material could reduce aircraft noise

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A ‘meringue-like’ graphene based material could reduce aircraft engine noise by up to 80 per cent, claim researchers at Bath University.

The graphene oxide-polyvinyl alcohol aerogel weighs 2.1kg per cubic metre, which is said to be the lightest sound insulation ever manufactured. The team believes that, when used as insulation within aircraft engines, noise could be reduced by up to 16 decibels. This would take the 105-decibel roar of a jet engine to a sound closer to that of a hair dryer.

With a ‘meringue-like’ structure, the extremely light material could act as an insulator within engine nacelles with almost no increase in overall weight according to researchers. The team is working on further optimising the material to offer improved heat dissipation, offering benefits to fuel efficiency and safety.

Researchers from Bath’s Materials and Structures Centre (MAST) have published a method for manufacturing the materials in the journal Nature Scientific Reports.

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