Abstract
Despite widespread use of an aft-fuselage-mounted twin-engine aircraft in the business jet industry, a thorough investigation into the vibro-acoustic properties of this aircraft type has yet to be undertaken. Additionally, the effect of bulkhead pressurization on the vibro-acoustic properties of this aircraft fuselage has yet to be investigated in isolation. This work investigates the effect of bulkhead pressurization on two different designs of an aft-fuselage-mounted twin-engine aircraft: a single and a double bulkhead designs. A modal analysis, a harmonic frequency response analysis, and an acoustic response analysis were performed. A split bulkhead pressurization methodology was introduced as a means of improving structural performance without impacting passenger comfort levels in a double bulkhead aircraft. Modal coupling between components was seen to be the primary cause of increased cabin noise, peaking above 80 Hz. The bulkhead frequency response was highly dependent upon bulkhead pressurization, as the modal participation factors were significantly impacted by bulkhead pressurization. Therefore, the importance of understanding all bulkhead natural frequencies was highlighted, as the response changed as a function of bulkhead pressurization. Bulkhead resonance conditions generated a tone in the acoustic frequency response inside the passenger cabin, highlighting the importance of this component to passenger comfort levels.
Issue Section:
Research Papers
Keywords:
acoustic emission,
modal analysis,
noise control,
structural acoustics,
structural dynamics and control
Topics:
Acoustics,
Aircraft,
Breakwaters,
Engines,
Modal analysis,
Noise (Sound),
Frequency response
References
1.
Jha
, S.
, and Catherines
, J.
, 1976
, “Sources and Characteristics of Interior Noise in General Aviation Aircraft
,” J. Acoust. Soc. Am.
, 59
(S1
), pp. S64
–S64
. 10.1121/1.20028172.
Jha
, S.
, and Catherines
, J.
, 1978
, “Interior Noise Studies for General Aviation Types of Aircraft, Part I: Field Studies
,” J. Sound Vib.
, 58
(3
), pp. 375
–390
. 10.1016/S0022-460X(78)80045-53.
Jha
, S.
, and Catherines
, J.
, 1978
, “Interior Noise Studies for General Aviation Types of Aircraft, Part II: Laboratory Studies
,” J. Sound Vib.
, 58
(3
), pp. 391
–406
. 10.1016/S0022-460X(78)80046-74.
Unruh
, J. F.
, Scheidt
, D. C.
, and Pomerening
, D. J.
, 1979
, “Engine-Induced Structural-Borne Noise in a General Aviation Aircraft
.” NASA-CR-159099.5.
Unruh
, J.
, and Dobosz
, S.
, 1988
, “Fuselage Structural-Acoustic Modeling for Structure-Borne Interior Noise Transmission
,” J. Vib. Acoust. Stress Reliab. Des.
, 110
(2
), pp. 226
–233
. 10.1115/1.32695036.
Snyder
, S.
, and Hansen
, C.
, 1994
, “The Design of Systems to Control Actively Periodic Sound Transmission Into Enclosed Spaces, Part II: Mechanisms and Trends
,” J. Sound Vib.
, 170
(4
), pp. 451
–472
. 10.1006/jsvi.1994.10787.
Unruh
, J. F.
, 1989
, “Aircraft Propeller Induced Structure-Borne Noise
.” NASA-CR-4255.8.
Wilby
, J. F.
, 1996
, “Aircraft Interior Noise
,” J. Sound Vib.
, 190
(3
), pp. 545
–564
. 10.1006/jsvi.1996.00789.
Wilby
, J. F.
, and Scharton
, T.
, 1973
, “Acoustic Transmission Through a Fuselage Sidewall
.” NASA-CR-132602.10.
Wilby
, J. F.
, 1982
,“Interior Noise of a General Aviation Aircraft
,” SAE Technical Paper.11.
Mixson
, J. S.
, and Wilby
, J. F.
, 1991
, “Interior Noise
.” Report 19920005567.12.
Richards
, L.
, 1980
, “On the Psychology of Passenger Comfort,” Human Factors in Transport Research
, D. J.
Oborne
and A.
Levis
, eds., Vol. 2
, Academic Press
, London
, pp. 15
–23
.13.
Richards
, L. G.
, and Jacobson
, I. D.
, 1975
, “Ride Quality Evaluation 1. Questionnaire Studies of Airline Passenger Comfort
,” Ergonomics
, 18
(2
), pp. 129
–150
. 10.1080/0014013750893144714.
Richards
, L. G.
, and Jacobson
, I. D.
, 1977
, “Ride Quality Assessment. III: Questionnaire Results of a Second Flight Programme
,” Ergonomics
, 20
(5
), pp. 499
–519
. 10.1080/0014013770893165915.
Getline
, G.
, 1976
, “Low-Frequency Noise Reduction of Lightweight Airframe Structures
.” NASA-CR-145104.16.
Sun
, Z.
, Sun
, J.
, Wang
, C.
, and Dai
, Y.
, 1996
, “Dynamic Vibration Absorbers Used for Increasing the Noise Transmission Loss of Aircraft Panels
,” Appl. Acoust.
, 48
(4
), pp. 311
–321
. 10.1016/0003-682X(96)81493-917.
Nash
, G.
, 2004
, “Utilizing Distributed Vibration Absorbers to Reduce Noise Transmission Through the Windshield of a Cessna 150
,” Ph.D. thesis, Virginia Tech
, Blacksburg, VA
.18.
Fuller
, C.
, Maillard
, J.
, Mercadal
, M.
, and Von Flotow
, A.
, 1997
, “Control of Aircraft Interior Noise Using Globally Detuned Vibration Absorbers
,” J. Sound Vib.
, 203
(5
), pp. 745
–761
. 10.1006/jsvi.1996.086719.
Romeu
, J.
, Palacios
, J. I.
, Balastegui
, A.
, and Pamies
, T.
, 2015
, “Optimization of the Active Control of Turboprop Cabin Noise
,” J. Aircr.
, 52
(5
), pp. 1386
–1393
. 10.2514/1.C03243120.
Elliot
, S.
, Nelson
, P.
, Stothers
, I.
, and Boucher
, C.
, 1990
, “In-Flight Experiments on the Active Control of Propeller-Induced Cabin Noise
,” J. Sound Vib.
, 140
(2
), pp. 219
–238
. 10.1016/0022-460X(90)90525-521.
Jones
, J.
, and Fuller
, C.
, 1990
, “Active Control of Structurally-Coupled Sound Fields in Elastic Cylinders by Vibrational Force Inputs
,” Int. J. Anal. Exp. Modal Anal.
, 5
(3
), pp. 123
–140
.22.
Houston
, B. H.
, Bucaro
, J.
, and Photiadis
, D. M.
, 1995
, “Broadband Acoustic Scattering From a Ribbed Shell
,” J. Acoust. Soc. Am.
, 98
(5
), pp. 2851
–2853
. 10.1121/1.41318623.
Tran-Van-Nhieu
, M.
, 2001
, “Scattering From a Ribbed Finite Cylindrical Shell
,” J. Acoust. Soc. Am.
, 110
(6
), pp. 2858
–2866
. 10.1121/1.141399724.
Liétard
, R.
, Décultot
, D.
, Maze
, G.
, and Tran-Van-Nhieu
, M.
, 2005
, “Acoustic Scattering From a Finite Cylindrical Shell With Evenly Spaced Stiffeners: Experimental Investigation
,” J. Acoust. Soc. Am.
, 118
(4
), pp. 2142
–2146
. 10.1121/1.201114825.
Pan
, A.
, Fan
, J.
, and Wang
, B.
, 2013
, “Acoustic Scattering From a Double Periodically Bulkheaded and Ribbed Finite Cylindrical Shell
,” J. Acoust. Soc. Am.
, 134
(5
), pp. 3452
–3463
. 10.1121/1.482121226.
Herdic
, P. C.
, Houston
, B. H.
, Marcus
, M. H.
, Williams
, E. G.
, and Baz
, A. M.
, 2005
, “The Vibro-Acoustic Response and Analysis of a Full-Scale Aircraft Fuselage Section for Interior Noise Reduction
,” J. Acoust. Soc. Am.
, 117
(6
), pp. 3667
–3678
. 10.1121/1.188712527.
Dammak
, K.
, Koubaa
, S.
, El Hami
, A.
, Walha
, L.
, and Haddar
, M.
, 2019
, “Numerical Modelling of Vibro-Acoustic Problem in Presence of Uncertainty: Application to a Vehicle Cabin
,” Appl. Acoust.
, 144
(1
), pp. 113
–123
. 10.1016/j.apacoust.2017.06.00128.
Li
, E.
, He
, Z.
, Jiang
, Y.
, and Li
, B.
, 2016
, “3d Mass-Redistributed Finite Element Method in Structural-Acoustic Interaction Problems
,” Acta Mech.
, 227
(3
), pp. 857
–879
. 10.1007/s00707-015-1496-y29.
Krylov
, V. V.
, Georgiev
, V. B.
, and Jensen
, K.
, 2017
, “Numerical and Experimental Modelling of Structure-Borne Aircraft Interior Noise
,” Noise Theory Pract.
, 3
(2
), pp. 2
–16
.30.
Pan
, J.
, and Bies
, D. A.
, 1990
, “The Effect of Fluid-Structural Coupling on Sound Waves in an Enclosure–Theoretical Part
,” J. Acoust. Soc. Am.
, 87
(2
), pp. 691
–707
. 10.1121/1.39893931.
Lalor
, N.
, and Priebsch
, H.-H.
, 2007
, “The Prediction of Low- and Mid-Frequency Internal Road Vehicle Noise: A Literature Survey
,” Proc. Inst. Mech. Eng., Part D: J. Automob. Eng.
, 221
(3
), pp. 245
–269
. 10.1243/09544070JAUTO19932.
Pope
, L.
, Rennison
, D.
, Willis
, C.
, and Mayes
, W.
, 1982
, “Development and Validation of Preliminary Analytical Models for Aircraft Interior Noise Prediction
,” J. Sound Vib.
, 82
(4
), pp. 541
–575
. 10.1016/0022-460X(82)90407-233.
Pope
, L.
, Wilby
, E.
, and Wilby
, J.
, 1987
, “Propeller Aircraft Interior Noise Model, Part I: Analytical Model
,” J. Sound Vib.
, 118
(3
), pp. 449
–467
. 10.1016/0022-460X(87)90364-634.
Pope
, L.
, Willis
, C.
, and Mayes
, W.
, 1987
, “Propeller Aircraft Interior Noise Model, Part II: Scale-Model and Flight-Test Comparisons
,” J. Sound Vib.
, 118
(3
), pp. 469
–493
. 10.1016/0022-460X(87)90365-835.
Nefske
, D.
, Wolf
, J.
, and Howell
, L.
, 1982
, “Structural-Acoustic Finite Element Analysis of the Automobile Passenger Compartment: A Review of Current Practice
,” J. Sound Vib.
, 80
(2
), pp. 247
–266
. 10.1016/0022-460X(82)90194-836.
Wong
, A. A.
, Abu
, A.
, Mansor
, S.
, Rudin
, N. F. M. N.
, Johar
, A. H.
, and Yatim
, N. H. M.
, 2017
, “Effect of Different Automobile Cabin Geometry to Acoustic Cavity Mode Analysis
,” Adv. Sci. Lett.
, 23
(5
), pp. 3824
–3828
. 10.1166/asl.2017.834537.
Cordioli
, J. A.
, Gerges
, S. N.
, Pererira
, A. K.
, Carmo
, M.
, and Grandi
, C.
, 2004
, “Vibro-Acoustic Modeling of Aircrafts Using Statistical Energy Analysis
,” Technical Report, SAE Technical Paper.38.
Montgomery
, J.
, 2000
, “Structural-Acoustic Testing and FEM/BEM Modeling of a 767 Fuselage Section
,” 6th Aeroacoustics Conference and Exhibit
, Lahaina, HI
, June 12–14
, p. 2056
.39.
Comrie
, J. L.
, and Korde
, U. A.
, 2012
, “Vibroacoustic Studies on Sounding Rocket Bulkheads
,” Proceedings SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012
, San Diego, CA
, Mar. 27
, International Society for Optics and Photonics, p. 834117
.40.
Simpson
, M.
, and Tran
, B.
, 1991
, “Analysis of Interior Noise Ground and Flight Test Data for Advanced Turboprop Aircraft Applications
.” NASA-CR-187558.41.
Warwick
, B. T.
, Kim
, I. Y.
, and Mechefske
, C. K.
, 2019
, “Substructuring Verification of a Rear Fuselage Mounted Twin-Engine Aircraft
,” Aerosp. Sci. Technol.
, 93
, p. 105305
. 10.1016/j.ast.2019.10530542.
Altair
, 2018
, “Optistruct User Guide 14.0.230
.”43.
Howard
, C.
, and Cazzolato
, B.
, 2014
, Acoustic Analyses Using MATLAB and ANSYS
, CRC Press
, Boca Raton, FL
.44.
Kaltenbacher
, M.
, 2018
, Computational Acoustics
, Springer
, New York
.45.
Yadav
, U.
, and Naganoor
, P.
, 2010
, “Acoustic Cavity Modelling Using Altair Auto Mesh Tool & Correlating With the Manual Mesh Model
,” Altair Technology Conference
, Novi, MI
, Apr. 27–29
, pp. 1
–5
.46.
De Oliveira
, L.
, Da Silva
, M. M.
, Sas
, P.
, Van Brussel
, H.
, and Desmet
, W.
, 2008
, “Concurrent Mechatronic Design Approach for Active Control of Cavity Noise
,” J. Sound Vib.
, 314
(3–5
), pp. 507
–525
. 10.1016/j.jsv.2008.01.00947.
Dhabe
, S.
, 2014
, “A Study of Passenger Car Acoustic Cavity Boom Simulation Methods
.” M.Sc. thesis, Michigan Technological University
.48.
Everest
, F. A.
, 2001
, “Master Handbook of Acoustics
,” J. Acous. Soc. Am.
, 110
, p. 1714
. 10.1121/1.139804849.
Ginsberg
, J. H.
, 2018
, Acoustics: A Textbook for Engineers and Physicists
, Springer
, New York
.50.
Lyon
, R. H.
, DeJong
, R. G.
, and Heckl
, M.
, 1995
, “Theory and Application of Statistical Energy Analysis
,” J. Acous. Soc. Am.
, 98
, p. 3021
.10.1121/1.41387551.
Berthaut
, J.
, Ichchou
, M.
, and Jezequel
, L.
, 2003
, “Piano Soundboard: Structural Behavior, Numerical and Experimental Study in the Modal Range
,” Appl. Acoust.
, 64
(11
), pp. 1113
–1136
. 10.1016/S0003-682X(03)00065-352.
Ege
, K.
, Boutillon
, X.
, and David
, B.
, 2009
, “High-Resolution Modal Analysis
,” J. Sound Vib.
, 325
(4–5
), pp. 852
–869
. 10.1016/j.jsv.2009.04.01953.
Ham
, S.
, and Bathe
, K.-J.
, 2012
, “A Finite Element Method Enriched for Wave Propagation Problems
,” Comput. Struct.
, 94
(1
), pp. 1
–12
. 10.1016/j.compstruc.2012.01.00154.
Kohno
, H.
, Bathe
, K.-J.
, and Wright
, J. C.
, 2010
, “A Finite Element Procedure for Multiscale Wave Equations With Application to Plasma Waves
,” Comput. Struct.
, 88
(1–2
), pp. 87
–94
. 10.1016/j.compstruc.2009.05.00155.
Chamberlain
, D. A.
, and Mechefske
, C. K.
, 2017
, “Experimental Modal Analysis of a Half-Scale Model Twin-Engine Aircraft Rear Fuselage Engine Mount Support Frame
,” ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
, Cleveland, OH
, Aug. 6–9
, pp. 1
–12
.56.
Warwick
, B. T.
, Mechefske
, C. K.
, and Kim
, I. Y.
, 2017
, “Computational Modal Analysis of a Twin-Engine Rear Fuselage Mounted Aircraft Support Frame
,” ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
, Cleveland, OH
, Aug. 6–9
, pp. 1
–9
.57.
Warwick
, B. T.
, Mechefske
, C. K.
, and Kim
, I. Y.
, 2018
, “Effect of Stiffener Configuration on Bulkhead Modal Parameters
,” ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
, Quebec City, Quebec, Canada
, Aug. 26–29
, pp. 1
–10
.58.
Antoni
, J.
, Griffaton
, J.
, André
, H.
, Avendaño-Valencia
, L. D.
, Bonnardot
, F.
, Cardona-Morales
, O.
, Castellanos-Dominguez
, G.
, Daga
, A. P.
, Leclère
, Q.
, Vicuña
, C. M.
, Acuña
, D. Q.
, Ompusunggu
, A. P.
, and Sierra-Alonso
, E. F.
, 2017
, “Feedback on the Surveillance 8 Challenge: Vibration-Based Diagnosis of a Safran Aircraft Engine
,” Mech. Syst. Signal Process.
, 97
(1
), pp. 112
–144
. 10.1016/j.ymssp.2017.01.03759.
Altair
, 2018
, “Hypermesh User Guide 14.0.230
.”Copyright © 2019 by ASME
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