AVEC, Inc.

Dr. Patricio Ravetta (Co-owner, Chief Research Engineer)

Dr. Ravetta received his Ph.D. at the Mechanical Engineering Department of Virginia Tech co-chaired by Professors R. Burdisso and W. Ng. His dissertation work focused in the noise measurement and control of landing gear noise using microphone phased array technologies. In his work he developed a new beamforming post-processing technique to perform array deconvolution, i.e. to remove array effects/sidelobes from phased array measurements.

During his research at Virginia Tech, Dr. Ravetta has developed beamforming and integration codes, designed arrays, and performed experiments in the VT Stability wind tunnel. Dr. Ravetta joined AVEC in 2005 as Research Engineer.

In his current full-time position as Chief Research Engineer at AVEC, Dr. Ravetta has worked in several projects involving analytical and experimental studies in noise and vibration including predictions, measurement and control.

Education:

  • PhD, 2005, Mechanical Engineering Department, Virginia Tech.
  • MSc, 2005. National University of Rio Cuarto, Argentina.
  • BS, 2001. National University of Rio Cuarto, Argentina.

Experience:

  • 2015 - present, Co-owner, Chief Research Engineer, AVEC, Inc.
  • 2008 - 2015, Chief Research Engineer, AVEC Inc.
  • 2005 - 2008, Research Engineer, AVEC Inc.
  • 2002 - 2005, Graduate Research Assistant at Virginia Tech. Dissertation topic: “Noise source identification on a 777 main landing gear model using microphones phased arrays.”
  • 2001 - 2002, Graduate Research Assistant at UNRC, Argentina. Research on “Unsteady nonlinear flow over delta wings using vortex-lattice methods”.
  • 1999 - 2000, Undergraduate research assistant at UNRC, Argentina. Research on “Input force identification in linear systems using wavelets”.

Selected Publications:

  • André F.P. Ribeiro, Mehdi R. Khorrami, Ryan Ferris, Benedikt König, Patricio A. Ravetta, “Lessons learned on the use of data surfaces for Ffowcs Williams-Hawkings calculations: Airframe noise applications,” Aerospace Science and Technology, Volume 135, 2023, 108202, ISSN 1270-9638, https://doi.org/10.1016/j.ast.2023.108202.
  • Szoke, M., Borgoltz, A., Intaratep, N., Kuester, M., and Ravetta, P.A., “Design and In-situ Calibration of a Beamforming Array for High-frequency Noise Measurements in a Hybrid-Anechoic Wind Tunnel,” 28th AIAA/CEAS Aeroacoustics 2022 Conference, AIAA 2022-2813, June 2022.
  • Ribeiro, A.F., Khorrami, M.R., Ferris, R., Koenig, B., and Ravetta, P.A., “Lessons Learned on the Use of Data Surfaces for Ffowcs Williams-Hawkings Calculations: Airframe Noise Applications,” 28th AIAA/CEAS Aeroacoustics 2022 Conference, AIAA 2022-2926, June 2022.
  • Ravetta, P. A., Khorrami, M. R., König, B., and Fares, E., “Multiplanar Synthetic Arrays and Their Application to Full-Scale Landing Gear Noise Source Identification,” 27th AIAA/CEAS Aeroacoustics Conference, AIAA Paper 2021-2163, August 2021.
  • Khorrami, M. R., Shea, P. R., Winski, C. S., Ravetta, P.A., Ribeiro, A. F. P., Ferris E., and Sacks, M., “Aeroacoustic Computations of a Generic Low Boom Concept in Landing Configuration: Part 3 - Aerodynamic Validation and Noise Source Identification,” 27th AIAA/CEAS Aeroacoustics Conference, AIAA Paper 2021-2197, August 2021.
  • Khorrami M. R., Konig, B., Fares, E., and Ravetta, P.A., "Aeroacoustic Study of a Subscale Large Civil Transport (STAR) Model – Part 2: Validation of Simulated Results," AIAA 2021-2133. AIAA AVIATION 2021 FORUM. August 2021.
  • Khorrami, M. R., Konig, B., Fares, E., Ribeiro, A.F.P., Czech, M., and Ravetta, P., “Airframe Noise Simulations of a Full-Scale Large Civil Transport in Landing Configuration,” AIAA Paper 2021-2161, 27th AIAA/CEAS Aeroacoustics Conference, August 2021.
  • Khorrami, M. R., Ravetta, P. A., Lockard, D.P., Duda, B.M., and Ferris, R., “Measured and Simulated Acoustic Signature of a Full-Scale Aircraft with Airframe Noise Reduction Technology Installed,” 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, AIAA Paper 2019-2477, May 2019.
  • Ravetta, P. A., Wisda, D.M., Khorrami, M. R., and Van de Ven, T., “Assessment of Airframe Noise Reduction Technologies based on EPNL from Flight Tests,” 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, AIAA Paper 2019-2456, May 2019.
  • M. Khorrami, W. Humphreys, D. Lockard, and P. Ravetta, “Flight-Test Evaluation of Landing Gear Noise Reduction Technologies,” 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, AIAA Paper 2019-2455, May 2019.
  • Khorrami, M. R., Ravetta, P. A., Lockard, D.P., Duda, B.M., and Ferris, R., “Comparison of Measured and Simulated Acoustic Signatures for a Full-Scale Aircraft with and without Airframe Noise Abatement,” 2018 AIAA/CEAS Aeroacoustics Conference, AIAA Paper 2018-2975, June 2018.
  • Ravetta, P. A., Khorrami, M. R., König, B., and Fares, E., “Analysis of Simulated and Experimental Noise Sources of the Boeing 777 Main Gear Model via CLEAN in 3D,” 2018 AIAA/CEAS Aeroacoustics Conference, AIAA Paper 2018-3470, June 2018.
  • Schwartz, K. W., Burdisso, R. A., Langford, M., and Ravetta, P. A., "Redesign of Rotor and Stators for Noise Reduction of Continuous Miner Scrubber Fan," INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 255, no. 1, pp. 555-562. Institute of Noise Control Engineering, 2017.
  • König, B., Fares, E., Ravetta, P. and Khorrami, M.R., “A Comparative Study of Simulated and Measured Main Landing Gear Noise for Large Civil Transports”, 23rd AIAA/CEAS Aeroacoustics Conference, Denver, Colorado, 5-9 June 2017. AIAA 2017-3013.
  • P. A. Ravetta, M. R. Khorrami, R. A. Burdisso, and D. M. Wisda. “Acoustic Measurements of a Large Civil Transport Main Landing Gear Model,” 22nd AIAA/CEAS Aeroacoustics Conference, Lyon, France, May 30-June 1, 2016. AIAA 2016-2901.
  • W. Humphreys, D. Lockard, M., Khorrami, W. Culliton, R. McSwain, P. Ravetta, and Z. Johns, “Development and Calibration of a Field-Deployable Microphone Phased Array for Propulsion and Airframe Noise Flyover Measurements”, 22nd AIAA/CEAS Aeroacoustics Conference, Lyon, France, May 30-June 1, 2016. AIAA-2016-2898
  • D. P. Lockard, W. M. Humphreys, M. R. Khorrami, E. Fares, D. Casalino, and P. A. Ravetta, “Comparison of Computational and Experimental Microphone Array Results for an 18%-Scale Aircraft Model”, 21st AIAA/CEAS Aeroacoustics Conference, Dallas, Texas, 13-17 June, 2015. AIAA 2015-2990. Also in International Journal of Acoustics, Volume 16 Issue 4-5, July 2017.
  • Jeremy Hurault, Anurag Gupta, Erik Sloth, Niels Christian Nielsen, Aurelien Borgoltz, and Patricio Ravetta, “Aeroacoustic wind tunnel experiment for serration design optimization and its application to a wind turbine rotor”, International conference on Wind Turbine Noise 2015, Glasgow, Scotland, April 2015.
  • M. Khorrami, W. Humphreys, D. Lockard, and P. Ravetta, “Aeroacoustic Evaluation of Flap and Landing Gear Noise Reduction Concepts,” 20th AIAA/CEAS Aeroacoustics Conference, Atlanta, Georgia, 16-20 June 2014. AIAA 2014-2478.
  • W.J. Devenport, R.A. Burdisso, A. Borgoltz, P.A. Ravetta, M.F. Barone, K.A. Brown, and M.A. Morton, “The Kevlar-walled Anechoic Wind Tunnel”, Journal of Sound and Vibration, Vol. 332, Issue 17, pp. 3971-3991, August 2013.
  • K. Schwartz, H. E. Camargo, P.A. Ravetta, D. Yantek, and R. Randolph, “Noise Source Identification on a Stageloader System,” Proceedings of NoiseCon 2013, Denver, Colorado, August 28, 2013.
  • W.J. Devenport, R.A. Burdisso, A. Borgoltz, P.A. Ravetta, and M.F. Barone, “Aerodynamic and Acoustic Corrections for a Kevlar-Walled Anechoic Wind Tunnel”, 16th AIAA/CEAS Aeroacoustics Conference, Stockholm, Sweden, June 7-9, 2010. AIAA 2010-3749.
  • P. A. Ravetta, R. A. Burdisso, “Synthesis of sonic boom noise inside structures: An innovative experimental approach,” The Journal of the Acoustical Society of America, vol. 127, issue 3, p. 1898, 2010.
  • H.E. Camargo, P.A. Ravetta, R.A. Burdisso, and A.K. Smith, “Application of Phased Array Technology for Identification of Low Frequency Noise Sources,” Journal of Low Frequency Noise, Vibration and Active Control, Vol. 28, No. 4, pp. 237-244, 2009.
  • P. A. Ravetta, R. A. Burdisso, and W. F. Ng, “Noise Source Localization and Optimization of Phased Array Results (LORE),” AIAA Journal, Vol. 47, No. 11, pp. 2520-2533, November 2009.
  • H.E. Camargo, P.A. Ravetta, R.A. Burdisso, and A.K. Smith, “A Comparison of Beamforming Processing Techniques for Low Frequency Noise Source Identification in Mining Equipment”, Proceedings of the International Mechanical Engineering Congress and Exposition, IMECE 2009, paper IMECE2009-12194, Lake Buena Vista, Florida, November 13-19, 2009.
  • P. A. Ravetta, K. W. Schwartz, and R. A. Burdisso, “Noise Source Identification on Rotating Machinery: A Novel Health Monitoring Approach Using Acoustic Phased Arrays,” Proceedings of INTERNOISE 2009, Ottawa, Canada, August 23-26, 2009.
  • H.E. Camargo, P.A. Ravetta, R.A. Burdisso, and D.S. Yantek, “Noise Source Identification on a Horizontal Vibrating Screen”, Mining Engineering Magazine July 2009, 61(7), pp. 47-51, 2009.
  • M. C. Remillieux, H. E. Camargo, P. A. Ravetta, R. A. Burdisso, and W. F. Ng, “A Novel Kevlar-Walled Wind Tunnel for Aeroacoustic Testing of a Landing Gear,” AIAA Journal, Vol. 46, No. 7, pp. 1631-1639, July 2008.
  • H. E. Camargo, P. A. Ravetta, R. A. Burdisso, and A. K. Smith, “Application of Phased Array Technology for Identification of Low Frequency Noise Sources,” 13th International Meeting on Low Frequency Noise and Vibration and its Control, Tokyo, Japan, 21– 23, October 2008.
  • M. C. Remillieux, H. E. Camargo, P. A. Ravetta, R. A. Burdisso, and W. F. Ng. "Novel Kevlar-Walled Wind Tunnel for Aeroacoustic Testing of a Landing Gear", AIAA Journal, Vol. 46, No. 7 (2008), pp. 1631-1639.
  • M.C. Remillieux, H.E. Camargo, P.A. Ravetta, R.A. Burdisso, and W.F. Ng, “Noise Reduction of a Model-Scale Landing Gear Measured in the Virginia Tech Aeroacoustic Wind Tunnel,” AIAA 2008-2818, 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), Vancouver, Canada, May 5-7, 2008.
  • S. Preidikman, P.A. Ravetta, and R.A. Burdisso, “Dynamic Stability Analysis of Isolated Integrated Motor Propulsor,” ENIEF 2007 Congress on Numerical Methods and its Applications, Córdoba, Argentina, Oct. 2-5, 2007.
  • P.A. Ravetta, J. Muract, and R.A. Burdisso, “Feasibility Study of Microphone Phased Array Based Machinery Health Monitoring,” ENIEF 2007 Congress on Numerical Methods and its Applications, Córdoba, Argentina, Oct. 2-5, 2007.
  • P.A. Ravetta, R.A. Burdisso, and W.F. Ng, “Noise Control Of Landing Gears Using Elastic Membrane-Based Fairings,” AIAA 2007-3466, 13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference), Rome, Italy, May 21-23, 2007.
  • P.A. Ravetta, R.A. Burdisso, W.F. Ng., M.R. Khorrami, and R.W. Stoker, “Screening of Potential Noise Control Devices at Virginia Tech for QTD II Flight Test,” AIAA 2007-3455, 13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference) , Rome, Italy, May 21-23, 2007.
  • R.A. Burdisso and P.A. Ravetta, “Noise Source Identification Using Microphone Phased Arrays,” V Iberoamerican Acoustic Congress – FIA2006, Santiago de Chile, Chile, 25-28 October, 2006 (Keynote address by R.A. Burdisso).
  • A. Ringshia, P. Ravetta, W. Ng and R. Burdisso, “Aerodynamic Measurements of the 777 Main Landing Gear Model,” AIAA-2006-2625, AIAA-2006-2625, 12th AIAA/CEAS Aeroacoustics Conference (27th AIAA Aeroacoustics Conference), Cambridge, Massachusetts, May 8-10, 2006.
  • P. A. Ravetta, R. A. Burdisso, and W. F. Ng, “Noise Source Localization and Optimization of Phased Array Results (LORE),” AIAA-2006-2713, AIAA-2006-2625, 12th AIAA/CEAS Aeroacoustics Conference (27th AIAA Aeroacoustics Conference), Cambridge, Massachusetts, May 8-10, 2006.
  • P. A. Ravetta, R. A. Burdisso, and W. F. Ng, “Phased Array Technologies Development at Virginia Tech: Application to Landing Gear Noise Source Identification,” ENIEF 2004 Congress on Numerical Methods and its Applications, San Carlos de Bariloche, Argentina, 8-11 November 2004.
  • P. A. Ravetta, R. A. Burdisso, and W. F. Ng, “Wind Tunnel Aeroacoustic Measurements of a 26%-scale 777 Main Landing Gear Model,” AIAA-2004-2885, 10th AIAA/CEAS Aeroacoustics Conference & Exhibit, Manchester UK, 10-12 May, 2004.
  • P.A. Ravetta and S. Preidikman, “Numerical Simulations for the Aeroelastic Study of the Attitude Control of a Medium-Size Wind Turbine,” (in Spanish), Proceedings of the 7th Argentine Congress on Computational Mechanics/1st South American Congress on Computational Mechanics, MECOM 2002, Santa Fe-Paraná, Argentina. October 28-30, 2002.
  • P.A. Ravetta and S. Preidikman, “A Vortex-Lattice Method for Determining Unsteady Non-Linear Aerodynamic Characteristics of Delta Wings Accounting for Leading Edge Flow Separation,” (in Spanish), Proceedings of the XII Congress on Numerical Methods and their Applications, ENIEF 2001, Córdoba, Argentina, October, 2001.
  • H. Brito, L. Lifschitz, and P. Ravetta, “Multi-degree-of-freedom Structural Dynamic Systems: Determination of Input Forces using Wavelets,” (in Spanish), Proceedings of the XXIX Jornadas Sudamericanas de Ingeniería Estructural, Punta del Este, Uruguay. November 2000.
  • H. Brito, L. Lifschitz and P. Ravetta, “Identification of Input Forces in Structural Dynamic Systems using Wavelets,” (in Spanish), Proceedings of the 6th Argentine Congress on Computational Mechanics, MECOM 99, Mendoza, Argentina. September 1999.