Speaker: Prof. Dennis K. McLaughlin

Department of Aerospace Engineering

Pennsylvania State University

Abstract:

This seminar describes experiments on model supersonic jets in the Penn State anechoic chamber jet noise facility.  The experiments are designed to produce aeroacoustic data on shock containing and perfectly expanded round jets and jets issuing from rectangular nozzles with and without thrust vectoring.  Acoustic overall sound pressure levels, spectra, and directivity are measured for a number of jet flowfield conditions as well as the nonlinear effects during propagation to the far field.

The experiments are part of a larger program at Penn State and Wyle Laboratories that involves the computational simulation of the jet flow near field, development of an algorithm to predict the propagation nonlinear effects, as well the inclusion of these developments into a dynamic model for use in airport and community noise impact studies.