Blog Posts

PSU CAV Seminar

3/28/2018

It was a pleasure to speak at Penn State for their Center of Acoustics and Vibration. Thank you to Dr. Mike Jonson for the invitation and to all of the CAV members.

Data Analytics in Wind Tunnel Measurements

3/20/2018

PhD candidate Aaron Defreitas is leading a test in the Virginia Tech Stability Wind Tunnel investigating data analysis methods for large diverse sensor systems. His analysis procedures are being used to identify anomalous results in real-time while collecting high volume data. The figure below shows the automated detection of a bad pressure port in a total pressure rake measuring the wake profile downstream of an airfoil. This port is seen in the profile at -10 degrees AoA. This is an obvious error, but the method is proving useful in detecting very small anomalies as well. These methods should improve identification of smaller errors that may be overlooked by a user trying to manage the collection of high volume data manually.

Covariance matrix of pressure coefficient in wake of airfoil

Wind Tunnel Test for TIN Project

12/15/2017

Just completed the first wind tunnel experiment for our new turbulence ingestion noise project. We tested the body of revolution designed collaboratively by researchers at the University of Notre Dame, Florida Atlantic University, and Virginia Tech. This body will produce a thick turbulent wake to be ingested by our rotor.

Acoustic Testing of sUAS Propellers

12/8/2017

Just finished some testing of low Reynolds number propellers with Aurora Flight Sciences in our anechoic chamber.

NAWEA 2017

9/29/2017

Members of CREATe at Virginia Tech presented at the NAWEA Symposium at Iowa State University. We had a great time and many interesting discussions. We would like to thank our hosts Profs. Hui Hu, Simon Laflamme, and Anupam Sharma.

AIAA Aviation 2017

6/9/2017

Three of my current and former students (Nick Molinaro, Christopher Hickling, and Dr. Ian Clark) did a great job presenting at Aviation in Denver, CO. Each of their presentations drew a lot of interest. Congratulations to Nick and Ian on their new jobs!

Christopher presenting his acoustic beamforming results

Nick discussing on-blade hotwire measurements

Attended FLINOVIA II

4/29/2017

Just returned from the FLINOVIA II meeting at Penn State. Had a nice time with many productive talks. Thanks to Steve Hambric, Amanda Hanford, Elena Ciappi, Sergio De Rosa, Francesco Franco, Jean-Louis Guyader, and Randolph Leung for putting together such a nice event!

Campus Sound Propagation Tests

4/20/2017

A team of our undergraduate researchers are working to produce a report to the University recommending outdoor concert stage configurations which minimize the acoustic disturbance to the surrounding community. These students conducted a field experiment on campus using the emergency broadcast system in order to validate their acoustic propagation model.