Sound proofing device for air pipe line of airplane, has air conduction means that is arranged within curved pipe section that is equipped with micro perforation at side surface for further weight neutral sound proofing

摘要

The sound proofing device has a curved pipe section (1'). The respective internal wall of the curved pipe section is cased with a sound proofing material (2). An air routing unit is arranged within the curved pipe section for flow optimization. An air conduction means is arranged within the curved pipe section that is equipped with a micro perforation at a side surface (3a,3b) for further weight neutral sound proofing.