Aeroacoustics (1 of 2) (IMAGE) Georgia Institute of Technology Research News Caption GTRI senior research engineers Rick Gaeta, left, and Gary Gray display a propeller-dynamometer device developed to test UAV aeroacoustics. Credit Georgia Tech Photo: Gary Meek Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.