Patent ID: 9303588
Filing Date: 2016-04-05
CPC Classification: F02C,F02K,F05D,G10K,Y02T

Claim Text:
1. A sound absorber for an engine of an aircraft, the sound absorber comprising: a base body having a bottom plate, a wall enclosing the bottom plate and an opening enabling entry of air into the base body; and a tongue having a fixed end connected to the wall, a free end and a central portion disposed between the fixed end and the free end; the tongue further having a longitudinal direction extending from the fixed end towards the free end, a width direction extending substantially perpendicularly to the longitudinal direction, and a transverse direction extending substantially perpendicularly to the longitudinal direction and substantially perpendicularly to the width direction, the central portion having a first free edge extending in the longitudinal direction from the fixed end towards the free end, and a second free edge opposite to the first free edge and extending in the longitudinal direction from the fixed end towards the free end, the tongue dividing a space of the base body into a partial space adjacent to the bottom plate and a partial space adjacent to the opening, the two partial spaces being connected to each other via a gap, the free end being disposed at a first distance from the wall in the transverse direction and at a second distance from the bottom plate in the longitudinal direction, such that the first and the second distances determine a size of the gap, and the central portion being configured to extend at least partially straight along the width direction.