scholarly journals Acoustic Lining Concepts and Materials for Engine Ducts

1969 ◽  
Vol 46 (1A) ◽  
pp. 77-78
Author(s):  
R. A. Mangiarotty
Keyword(s):  
Acoustic Lining

scholarly journals Manufacturing Aspects of Active Acoustic Lining panel

2020 ◽  
Author(s):  
K. Gonet ◽  
S. Steeger ◽  
S. Algermissen ◽  
V. Lungaho
Keyword(s):  
Acoustic Lining

scholarly journals Nonlinear Acoustics in a Viscothermal Boundary Layer over an Acoustic Lining

AIAA Journal ◽  
2020 ◽  
Vol 58 (2) ◽  
pp. 673-686
Author(s):  
Owen D. Petrie ◽  
Edward J. Brambley
Keyword(s):  
Boundary Layer ◽  
Nonlinear Acoustics ◽  
Acoustic Lining

Acoustic Resonance in Aeroengine Intake Ducts

2004 ◽  
Vol 126 (3) ◽  
pp. 432-441 ◽  
Author(s):  
A. J. Cooper ◽  
A. B. Parry ◽  
N. Peake
Keyword(s):  
Theoretical Model ◽  
Analytical Methods ◽  
Swirling Flow ◽  
Acoustic Resonance ◽  
Rotating Stall ◽  
Flow Conditions ◽  
Resonance Phenomena ◽  
Axial Variation ◽  
Acoustic Lining

A theoretical model is used to investigate the effect of geometry, flow conditions and acoustic lining on the occurrence of acoustic resonance within aeroengine ducts. Semi-analytical methods are used to demonstrate that two types of acoustic resonance can be excited. The first is an intake resonance arising due to axial variation of the intake shape and the presence of swirling flow downstream of the rotor. The second occurs as a result of mode trapping between the rotor and stator. Such resonance phenomena may be relevant to the destabilization of the fan and the onset of flutter and rotating stall.

Acoustic performance of the 40- by 80- foot wind tunnel test section deep acoustic lining

2000 ◽  
Author(s):  
Paul Soderman ◽  
Stephen Jaeger ◽  
Julie Hayes ◽  
Christopher Allen
Keyword(s):  
Wind Tunnel ◽  
Test Section ◽  
Wind Tunnel Test ◽  
Acoustic Performance ◽  
Acoustic Lining
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