公开(公告)号：US20200239125A1

公开(公告)日：2020-07-30

申请号：US16257261

申请日：2019-01-25

Applicant: THE BOEING COMPANY

Inventor： Om Prakash ,  Megha Sahu ,  Shantanu Bhattacharya ,  Sanjay Kumar ,  Pulak Bhushan

IPC: B64C1/40

Abstract: A sound attenuation panel that includes an incident wall and a frame unit connected to the incident wall. The incident wall defines an aperture therethrough. The frame unit includes multiple spoke members spaced apart from one another and radially extending from one or more central hub openings of the frame unit. The one or more central hub openings align with the aperture of the incident wall. The frame unit defines channels between adjacent pairs of the spoke members. The channels fluidly connect to the one or more central hub openings. The frame unit is configured to receive sound waves into the central hub opening through the aperture of the incident wall to dissipate the sound waves through the channels between the spoke members.

公开(公告)号：US20190103089A1

公开(公告)日：2019-04-04

申请号：US15719854

申请日：2017-09-29

Applicant: THE BOEING COMPANY

Inventor： Om Prakash ,  Shantanu Bhattacharya ,  Sanjay Kumar ,  Pulak Bhushan

IPC: G10K11/172 ,  B32B3/12 ,  B32B3/26 ,  B32B7/02 ,  B32B25/14 ,  B32B25/04 ,  B32B7/12 ,  B32B37/12

Abstract: A composite panel assembly includes first and second elastic membranes and a structure. The structure has a first side mounted to the first elastic membrane and a second side mounted to the second elastic membrane. The structure includes a first honeycomb layer, a second honeycomb layer, and a plurality of necks. The first honeycomb layer has partition walls defining resonance cavities that are covered by the first elastic membrane along the first side. The second honeycomb layer has partition walls defining resonance cavities that are covered by the second elastic membrane along the second side. The necks are disposed between and connect the first and second honeycomb layers. Each neck defines a channel that is fluidly connected to a corresponding one of the resonance cavities of the first honeycomb layer and a corresponding one of the resonance cavities of the second honeycomb layer.

公开(公告)号：US10726824B2

公开(公告)日：2020-07-28

申请号：US15719854

申请日：2017-09-29

Applicant: THE BOEING COMPANY

Inventor： Om Prakash ,  Shantanu Bhattacharya ,  Sanjay Kumar ,  Pulak Bhushan

IPC: G10K11/172 ,  B32B7/12 ,  B32B25/14 ,  B32B3/12 ,  B32B15/088 ,  B32B25/08 ,  B32B15/04 ,  B32B25/12 ,  B32B27/34 ,  B32B15/06 ,  B32B27/08 ,  B32B3/26 ,  B32B7/02 ,  B32B25/04 ,  B32B37/12 ,  B64C1/40 ,  B64C1/00

Abstract: A composite panel assembly includes first and second elastic membranes and a structure. The structure has a first side mounted to the first elastic membrane and a second side mounted to the second elastic membrane. The structure includes a first honeycomb layer, a second honeycomb layer, and a plurality of necks. The first honeycomb layer has partition walls defining resonance cavities that are covered by the first elastic membrane along the first side. The second honeycomb layer has partition walls defining resonance cavities that are covered by the second elastic membrane along the second side. The necks are disposed between and connect the first and second honeycomb layers. Each neck defines a channel that is fluidly connected to a corresponding one of the resonance cavities of the first honeycomb layer and a corresponding one of the resonance cavities of the second honeycomb layer.

公开(公告)号：US11214350B2

公开(公告)日：2022-01-04

申请号：US16257261

申请日：2019-01-25

Applicant: THE BOEING COMPANY

Inventor： Om Prakash ,  Megha Sahu ,  Shantanu Bhattacharya ,  Sanjay Kumar ,  Pulak Bhushan

IPC: B64C1/40 ,  B33Y10/00 ,  B33Y80/00 ,  B64D33/02 ,  G10K11/172

Abstract: A sound attenuation panel that includes an incident wall and a frame unit connected to the incident wall. The incident wall defines an aperture therethrough. The frame unit includes multiple spoke members spaced apart from one another and radially extending from one or more central hub openings of the frame unit. The one or more central hub openings align with the aperture of the incident wall. The frame unit defines channels between adjacent pairs of the spoke members. The channels fluidly connect to the one or more central hub openings. The frame unit is configured to receive sound waves into the central hub opening through the aperture of the incident wall to dissipate the sound waves through the channels between the spoke members.