Patent · US Active

Insulation design for thermal and acoustic insulation of an aircraft

US8327976B2 · kind B2 · utility

4Cited by

37References

13Claims

0Family size

Assignee

AIRBUS OPERATIONS LIMITED · DE

Inventors

Rainer Muller · Penzberg, DE
Benjamin Grenzing · Hamburg, DE
Christian Thomas · Walldorf, DE

Key dates

Filing date	Jul 20, 2009
Grant date	Dec 11, 2012
Priority date	—
Expiry date	Nov 25, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention pertains to an insulation structure for thermally and acoustically insulating an aircraft that features at least one heavy layer, wherein the insulation structure according to the invention is characterized in that the insulation structure comprises an additional absorption layer, in that the heavy layer is perforated at least in certain areas, and in that the perforated area ratio of the heavy layer is adapted in such a way that the heavy layer is essentially transparent to sound for frequencies below a double-wall frequency of the insulation structure. This makes it possible to dampen sound with low frequencies below the double-wall frequency as effectively as possible.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.