M.Sc. Kyle Schwartz (Senior Research Engineer)

Mr. Schwartz received his Bachelor’s degree in Mechanical Engineering from Virginia Tech in 2005 after performing three semesters and an internship of undergraduate research in the acoustics field. Mr. Schwartz obtained his Master’s degree in the Vibration and Acoustics Lab (VAL) in the Mechanical Engineering Department at Virginia Tech in 2006. His Master’s work focused on the acoustic characterization of noise emitted from pneumatic percussion tools. His research has made it possible to create a methodology to determine noise sources from pneumatic tools. Measurements performed for his thesis project include acoustic sound power measurements and hot wire anemometer tests.

Mr. Schwartz began working for AVEC in 2006 as the primary acoustic engineer on a project to reduce noise of the ducted fan Class I UAV for the Army (Future Combat Systems / Brigade combat team Modernization). Mr. Schwartz was in charge of designing and performing acoustic experiments which included noise measurements of individual sub-components (e.g. ducted fan) and complete prototypes. He has also performed multiple detectability analyses at different stages of the vehicle design. Mr. Schwartz also performed vibration measurements. As part of this project, Mr. Schwartz developed a muffler design tool which is used to achieve low noise emissions as well as maintaining the appropriate engine backpressure. Project completed 2011.

Mr. Schwartz is also experienced in project management as the principal investigator for the Acoustic Health Monitoring System for Rotating Machinery (Air Force SBIR Phase II). This project used phased array technology to determine the health of large compressors and electric motors. Vibration measurements and large scale acoustic measurements were major elements of this project. Project completed 2009.

Mr. Schwartz was also the principal investigator for a Phase I SBIR (NIH/CDC) on the Quieting of a Continuous Miner Scrubber Fan. For this project, a coal dust scrubber fan was redesigned to reduce noise by up to 20 dB. Phase I completed 2013. Phase II is pending.

More recently, Mr. Schwartz has been the primary engineer on various projects whose main goal is to design low noise propellers for both tractor and pusher configurations. Mr. Schwartz participated in developing noise prediction tools and streamlining the design process with partners on the project (Techsburg). Mr. Schwartz also participated in the development of a noise prediction tool that predicts the interaction noise of a pusher propeller (downstream of the wing/fuselage) – a common configuration in today’s UAVs. Mr. Schwartz was also in charge of acoustic tests in the anechoic test section at the VT stability wind tunnel. Propeller measurements included a 63 element microphone phased array and a 60 element grid array. Propellers designed for these projects have been manufactured and flown, and have been measured/verified to produce lower noise than the replaced baseline propeller. Multiple projects from 2010 through present.

Other projects and measurements which Mr. Schwartz has contributed include: the measurement of noise created by flow distortion of a serpentine inlet (Air Force Phase II SBIR, ongoing), ducted fan propulsor design and measurement, muffler design and engine exhaust noise measurement, the design and manufacture of a 117 element microphone phased array including the design of signal conditioning and filter PCBs.

Education:

  • MSc, 2006. Mechanical Engineering Department, Virginia Tech.
  • BS, 2005. Mechanical Engineering Department, Virginia Tech.

Experience:

  • 2015 - Present, Senior Research Engineer, AVEC Inc.
  • 2013 - 2015, Research Engineer, AVEC Inc.
  • 2006 - 2013, Project Engineer, AVEC Inc.
    • Detectability analysis
    • Modulated rotor analysis
    • Rotor-stator-strut noise analysis
    • Sound power and directivity measurements
    • Spectral analysis
    • Acoustic and vibration measurements of a tethered UAV
    • Acoustic measurements in reverberant and free-field environments
    • Propeller design for low noise (tractor or pusher configurations)
    • Engine exhaust noise measurements
    • Muffler design
  • 2005 – 2006, Graduate Research Assistant at Virginia Tech. Thesis topic: “Acoustic characterization of pneumatic percussion tools.”
  • 2003 – 2005, Undergraduate Research Assistant at Virginia Tech. Research on:
    • Experimental investigation of Drain pipe noise
    • Material characterization of current Dupont Materials
    • Natural Hearing Restoration for Encapsulating Helmets
    • Flow Control and Vibration Isolation for Integrated Motor Propulsor
  • 2004, Internship at Virginia Tech (Vibration and Acoustics Laboratory). Research on “Flow Control of Vibration Isolation for Integrated Motor Propulsor.”

Selected Publications:

  • 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.
  • 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.
  • Rahul Kadam, Kyle Schwartz, Marty Johnson, Ricardo Burdisso, “Computational simulation of a Pneumatic Chipping Hammer”, Hand/Arm Conference, Morgantown, WV (June, 2006).