Methods and apparatus for reducing noise in reinforced skin structures

Assemblies, methods, and an apparatus for damping vibrational energy induced to a reinforced skin structure (100) are disclosed. The reinforced skin structure includes an outer wall (102) and at least one stringer (104) coupled to the outer wall. The method includes providing a damping apparatus tha...

Full description

Saved in:
Bibliographic Details
Main Authors Juhn-Shyue, Lin, Hoffman, Herbert L, Chewning, Gary R, Christenson, Justin
Format Patent
LanguageEnglish
French
German
Published 19.04.2017
Subjects
AEROPLANES
AIRCRAFT
AVIATION
COSMONAUTICS
HELICOPTERS
PERFORMING OPERATIONS
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:Assemblies, methods, and an apparatus for damping vibrational energy induced to a reinforced skin structure (100) are disclosed. The reinforced skin structure includes an outer wall (102) and at least one stringer (104) coupled to the outer wall. The method includes providing a damping apparatus that includes a stiffening member (200) configured to adjust at least one of a bending mode and a torsional twisting mode of the stringer and an energy dissipation member (300) configured to dissipate vibrational energy of the stringer. The stiffening member includes at least two elongated members (202) that are spaced a distance apart and at least one truss member (204) that extends obliquely between the at least two elongated members. The damping apparatus is attached to the at least one stringer. The damping apparatus may be configured to dampen vibration in the range of between about 200-600 Hz.
Bibliography:Application Number: EP20130171187