Patent ID: 11881199
Assignee: ITT MANUFACTURING ENTERPRISES, LLC
Field: Transport (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. An inlet duct for an aircraft, comprising:
an interior surface of at least one side of the inlet duct;
a plurality of resonator chambers coupled with the interior surface and configured to dampen sound, the plurality of resonator chambers comprising:
a first chamber comprising a first longitudinal portion and a second longitudinal portion, the first longitudinal portion and the second longitudinal portion defining a first interior space, the first and second longitudinal portions coupled by a first bend region; and
a second chamber comprising a third longitudinal portion and a fourth longitudinal portion, the third longitudinal portion and the fourth longitudinal portion defining a second interior space, the third and fourth longitudinal portions coupled by a second bend region;
wherein the first longitudinal portion is parallel to and shorter than the third longitudinal portion, the second longitudinal portion is parallel to and shorter than the fourth longitudinal portion;
wherein the first chamber is nested within the second chamber,
wherein the first interior space has a first volume and the second interior space has a second volume different than the first volume.