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18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference)

4–6 June 2012 • Colorado Springs, Colorado, USA

www.aiaa.org/events/aeroacoustics

18th AIAA/CEAS Aeroacoustics Conference

Extended Abstract due: 9 November 2011

C A L L F O R P A P E R S

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Acoustic/Fluid Dynamic PhenomenaAnalysis, measurement, and control of subsonic and supersonic flows, vortex-driven flows, reacting and non-reacting flows, combustion instabilities, flow acoustic interactions and resonance, and flow receptivity to acoustic disturbances.

Active Noise ControlActive control of noise and related unsteady flows and vibration; noise cancellation through active acoustic treatment, and active source control as related to noise and vibration in the cabin, and within engine ducts and jets; development of associated sensors and actuators; and feedback and feed-forward control strategies.

Advanced Testing TechniquesDevelopment and application of novel testing techniques, advanced diagnostic methods, and test facilities: topics of particular interest are detailed measurements of mean and turbulent flow phenomena that contribute to noise generation and/or affect the radiated sound; source localization; flow, reverberation, and “noise” effects on measured data and their suppression; properties of sound-absorbing materials, including bulk absorbers and liners at high temperatures; interior-noise test facilities, including source simulation and noise-source path identification; and comparisons of model and full-scale testing.

Airframe/High-Lift NoiseNoise source mechanisms of flow/surface interaction as related to airframe acoustics; measurement, analysis, and prediction methods for wing, flap, slat, and landing gear noise; noise reduction strategies including devices and methods of circulation and boundary layer control.

Community Noise and MetricsResponse of individuals and the community to aircraft noise, including noise from rotary wings, open rotors, sonic boom, and subsonic and supersonic jets; noise assessment methodologies

technIcAl sessIon toPIcs

www.aiaa.org/events/aeroacoustics

18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference)

4–6 June 2012 Colorado Springs, Colorado, USAwww.aiaa.org/events/aeroacoustics

SynopSiSThe AIAA/CEAS AEROACOuStICS COnFEREnCE has established itself as the premier international forum for the field of aeroacoustics. It offers scientists and engineers from industry, government, and academia an exceptional opportunity to exchange knowledge and results of current studies and to discuss directions for future research. Papers are solicited that address all aspects of the generation, propagation, and control of vehicle noise, as well as the effect of noise on structures and individuals. The program’s technical content will include theoretical, numerical, and experimental contributions that describe original research results and/or innovative design concepts. In addition, in-depth reviews and timely surveys will be considered.

Topics for the conference are listed under Technical Session Topics. Studies in other related areas, particularly the application of aerospace noise suppression technologies in other industries and papers pertaining to non-aerospace research with potential application to the aerospace industry, are also encouraged.

Important Dates to Remember

9 November 2011Extended abstract due

1 February 2012Notification to authors

March 2012Preliminary program on AIAA Web site

7 May 2012Complete manuscript for student competition e-mailed to Education Subcommittee Chair

21 May 2012 Complete manuscript submitted

for online proceedings

29 May 2012Online proceedings available

to registered attendees

www.aiaa.org/events/aeroacoustics

and criteria for acceptability; tools for land-use planning with respect to airport noise; and development of airport noise reduction strategies and airport noise monitoring methods.

Computational AeroacousticsDevelopment of innovative numerical techniques for aeroacoustics applications: emphasis is placed on the ability of algorithms to accurately simulate and/or track acoustic information from flows, and on the development of proper boundary conditions for aeroacoustic applications. Applications are sought in areas of sound generation by turbulence, unsteady flows, or moving boundaries, and propagation, transmission, and scattering of sound through non-uniform flows.

Duct AcousticsNew and innovative methods to analyze, predict, and control the turbomachinery noise propagating through and radiating from nacelle ducts: topics of particular interest include modeling and design of lightweight passive and active/adaptive liners to control the noise in ducts.

General AcousticsTheoretical, numerical, and experimental research involving all areas of physical acoustics and those involving noise associated with commercial systems.

Integration Effects and Flight AcousticsAeroacoustics effects of propulsion and airframe integration; understanding and predicting

noise source modifications originating from the interaction of flow and/or acoustic propagation mechanisms; noise reduction approaches based on aspects of propulsion and airframe system integration or aircraft configuration; integrated test model and flight vehicle acoustic experimental and/or prediction research.

Interior Noise/Structural AcousticsReduction of interior noise and vibration associated with aircraft, manned spacecraft configurations, expendable launch vehicles, and automobiles; noise transmission through structures; structure and payload response; and vibro/acoustic test and prediction methods.

Jet AeroacousticsAerodynamics and aeroacoustics of jets focusing on identifying and modeling noise production mechanisms; near-field noise; shock noise; turbulence prediction and characterization for subsonic, supersonic, and noncircular and multi-stream jets; and suppression methods for both subsonic and supersonic jet noise. Of particular interest are new aeroacoustic modeling methods and flow and noise diagnostics techniques, and the effects of jet heating on the experimental data and on the modeling.

Loads/Sonic FatiguePrediction, testing, design, and control of sonic fatigue; sources of fluctuating loads on structures; jet/structure interactions; flow resonance phenomena; structural and material stress-strain responses; and high temperature effects.

Propeller, Rotorcraft and V/STOL NoiseConventional and advanced single and contra-rotating propellers; tone and broadband noise; propagation and ground reflection effects; fuselage boundary layer refraction and scattering; noise source control; effects of inflow distortions and installation effects; rotorcraft source studies, including rotor harmonic noise, high-speed impulsive and blade-vortex interaction noise, blade-turbulence interaction noise, jet-surface interaction noise (including both ground and aircraft surfaces); component and system noise prediction and validation; ground and flight test measurements; and noise control/reduction strategies.

Sonic BoomModeling and prediction of noise from supersonic business jets; methods for sonic boom prediction and minimization through design and/or operation; response studies, and metrics; atmospheric effects on noise propagation including refraction, diffraction, absorption, and turbulence scattering.

Turbomachinery and Core NoiseGeneration, propagation, and control of noise from fans, compressors, combustors, and turbines; propagation and interaction with the mean flowfield; transmission and reflection from blade and vane rows; generation of afterburner noise; control using active or passive techniques; and measurement techniques for source identification.

Student Paper Competition

Undergraduate and graduate students are encouraged to submit papers for consideration in the Aeroacoustics Student Paper Competition. Student papers should report on thesis work conducted by students in collaboration with faculty advisors. The student submitting a paper for consideration must be the primary author, and must have been a student at the time of the preceding Aeroacoustics Conference. Papers submitted by students must be presented by the primary author at the conference. The student author of the best paper will receive a monetary award and certificate during the conference. The best student paper award will be selected on the basis of the technical quality of the paper, including its presentation. Papers not received by the student paper submission deadline or not presented by the student at the conference will not be considered for the award. Interested students should submit abstracts electronically through AIAA’s Web site at

www.aiaa.org. Please submit to the appropriate topic and be sure to select “Student Paper Submission” as the presentation type. In addition, at the time you submit your extended abstract, send an e-mail to the Organizing Committee (Florence.v.hutcheson@nasa.gov and dpapamos@uci.edu) stating that you want your paper to be considered for the student award. It is the authors’ responsibility to contact the Organizing Committee to make sure that the paper is entered in the competition. Authors participating in the Student Award competition must also send a copy of their manuscript to the Education Subcommittee Chair (tony.pilon@lmco.com) no later than 7 May 2012. Authors must send a manuscript prior to this deadline to be considered in the competition. Please use “Student Paper Manuscript” as the subject line of your e-mail.

AIAA Technical Co-ChairFlorence V. HutcHesonPhone: 757.864.1054Fax: 757.864.8290 E-mail: Florence.v.hutcheson@nasa.gov

CEAS Technical Co-Chairsjoerd rienstraPhone: +31.40.247.4603/4760Fax : +31.40.244.2150E-mail: s.w.rienstra@tue.nl

Administrative Chairdimitri PaPamoscHouPhone: 949.824.6590Fax: 949.824.8585E-mail: dpapamos@uci.edu

Questions about the abstracts themselves should be referred to:

www.aiaa.org/events/aeroacoustics

AbstrAct InstructIons

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Abstract Submittal RequirementsAn extended abstract of at least 1000 words is required, with key figures and references to pertinent publication in the existing literature. Authors must clearly identify in the abstract new or significant aspects of their work. Abstract reviewers will base recommendations for acceptance or rejection on: 1. Whether the abstract meets the

requirements described above.2. The relevance of the work. 3. The originality of the work.4. Contributions to the field, i.e., does it

advance the current state of knowledge?5. Are significant results presented to ensure

timely completion of the paper?Extended abstract submissions for the conference will be accepted electronically through AIAA’s Web site at www.aiaa.org/events/aeroacoustics. To submit to the conference please follow the steps listed below in “Abstract Submittal Information.”

Abstract Submittal InformationAbstracts must be submitted no later than 9 november 2011. Authors will be notified of paper acceptance via e-mail by 1 February 2012. An Author’s Kit containing detailed instructions and guidelines for submitting papers to AIAA will be made available to authors of accepted papers on the conference Web site. Authors of accepted papers must upload a complete manuscript online to ScholarOne’s Manuscript Central by 21 may 2012 for inclusion in the online proceedings and for the right to present at the conference. It is the responsibility of those authors whose papers or presentations are accepted to ensure that a representative attends the conference to present the paper. Sponsor and/or employer approval of each paper is the responsibility of the author(s), as is government review, if required. Authors should determine the extent of approval necessary early in the paper presentation process to preclude paper withdrawals or late submissions.Abstract submissions for the conference will be accepted electronically through ScholarOne’s Abstract Central. This Web

site will be open for abstract submittal through 9 november 2011. The instructions for electronic submission of abstracts can be found online at www.aiaa.org/events/aeroacoustics, by clicking “Submit Paper” on the right-hand side of the page.

“No Paper, No Podium” PolicyIf a written paper is not submitted by the final manuscript deadline, authors will not be permitted to present the paper at the conference.

Warning—Technology Transfer ConsiderationsAll authors are reminded that technology transfer guidelines have substantially extended the time required for review of abstracts and completed papers by government agencies. Internal (company) plus external (government) review can consume 16 weeks or more. Government review is the responsibility of the author. Authors should determine the extent of approval necessary early in the paper preparation process to preclude paper withdrawals and late submissions.

International Traffic in Arms Regulations (ITAR)AIAA speakers and attendees are reminded that some topics discussed in the conference could be controlled by the International Traffic in Arms Regulations (ITAR). U.S. nationals (U.S. citizens and permanent residents) are responsible for ensuring that technical data they present in open sessions to non-U.S. nationals in attendance or in conference proceedings are not export restricted by the ITAR. U.S. nationals are likewise responsible for ensuring that they do not discuss ITAR export-restricted information with non-U.S. nationals in attendance.

BANC-II WorkshopThe second aiaa Workshop on Benchmark Problems for airframe noise computations (Banc-ii) will be held in conjunction with the 18th AIAA/CEAS Aeroacoustics Conference. The anticipated dates for this workshop are 7–8 june 2012, i.e., immediately following the conference. The objectives of the BANC-II Workshop are to:

● Provide a forum for a thorough assessment of simulation-based noise-prediction tools in the context of airframe configurations, including both near-field unsteady flow and the acoustic radiation generated via the interaction of this flow with solid surfaces.

● Identify current gaps in physical understanding, experimental databases, and prediction capability for the major sources of airframe noise.

● Help determine best practices, and accelerate the development of benchmark quality datasets.

● Promote future coordinated studies of common configurations for maximum impact on the current state of the art in the understanding and prediction of airframe noise.

The BANC-II workshop will build upon the outcomes of the BANC-I workshop held in June 2010 in Stockholm, Sweden, and will include revised versions of BANC-I test cases along with additional problems addressing other sources of noise and/or critical aeroacoustic phenomena. It is open to participants worldwide and is jointly sponsored by the AIAA Aeroacoustics Technical Committee and the AIAA Fluid Dynamics Technical Committee. Participation in the BANC-II studies is not required to attend the workshop; everyone is welcome. Details of the BANC-II problem statements will be posted at the Web site: https://info.aiaa.org/tac/asG/Fdtc/dG/Becan_files_/Bancii.htm To receive timely communications regarding Workshop activities, all potential participants are urged to join the BANC-II mailing list by entering their contact information at: https://info.aiaa.org/tac/asG/Fdtc/dG/Becan_files_/Bancii_noi.htm