Seminar: Challenges in Prediction of Noise of Commercial Aircraft

Commercial aircraft are powered by turbofan engines, which have several noise sources. The measurement, interpretation and quantification of the noise spectral levels at different angles and at different engine power settings present a major challenge. Good understanding of the source noise characteristics is vital for the prediction and control of aircraft noise. Jet noise is the dominant component during takeoff even for modern high bypass ratio engines. Accurate
prediction of jet noise from dual-stream nozzle exhaust geometries typical of high bypass ratio turbofan engines has practical relevance for aircraft design studies and in aircraft noise certification. A new prediction method, developed is described and illustrated.

About the Speaker

Dr. Viswanathan (“Vishy”) received his Ph.D. in Aerospace Engineering from Penn State University. He worked in the Propulsion, Acoustics and  Thermodynamics Group at Lockheed Martin in Marietta, GA, prior to moving to Boeing in 1996. He is currently a Technical Fellow in the Aeroacoustics and Fluid Mechanics group at Boeing, and is responsible for planning, developing and implementing technologies for community noise control for commercial and
military aircraft. He is an Associate Fellow of the AIAA, past Chair of the AIAA Aeroacoustics Technical Committee, serves as Technical Expert on the Government/Industry team for the Versatile Affordable Advanced Turbine Engine Program of the DoD and is a member of the US Navy’s Science and Technology Panel on Noise. He has authored over 160 technical articles.

Hosted by Professor Mo Samimy