Aerodynamic and Acoustic Consulting Company (A2C2) is a leading provider of cutting-edge research and modeling in aviation noise prediction and measurement support, with a focus on reducing noise from helicopters, Advanced/Urban Air Mobility systems, and drones.
What we do
A2C2 provides advanced research and modeling capabilities across a wide spectrum of aviation-related applications. We support private industry with comprehensive solutions to aerodynamic and acoustic challenges, integrating high-fidelity measurements, predictive modeling, and human response analysis to address complex noise and performance issues.
Research and Innovation
We are internationally recognized experts in the field of aerodynamics and acoustics. We are distinguished by our ability not only to apply state-of-the-art methods to address acoustic and noise challenges, but also to drive innovation and advance the underlying scientific and technical knowledge.
Meet Us
A2C2’s experience as trusted advisors to non-profits, private, and academic clients around the world.
James H. Stephenson III, Ph.D
Managing Partner & Chief Scientist
Dr. James Stephenson’s research focuses on aircraft and rotor noise measurements in wind tunnel, flight testing, and the effect that noise has on people and the environment. Throughout his career he’s directed or conducted research with universities, US Army, NASA, and NATO. Dr. Stephenson was nominated for the 2019 Presidential Early Career Awards for Scientists and Engineers, is a Board of Directors member for the Vertical Flight Society, and a recipient of the Alfred Gessow Award for the most impactful paper at the Vertical Flight Society’s annual conference. Dr. Stephenson received his B.S. in Mechanical Engineering from George Washington University, and his MS. and Ph.D in Aerospace Engineering from the University of Texas at Austin.
Robert F. Rau II, Ph.D
Managing Partner & Chief Engineer
Dr. Rob Rau specializes in mid-fidelity aerodynamic and acoustic predictions of single and multi-propeller vehicles. He excels at applying research to problems generating solutions with real world benefits. In addition to computational modeling expertise, Dr. Rau has an extensive background in Software Engineering providing services for the design and implementation of safety critical software for the automotive industry. Dr. Rau received his B.S. and M.S. in Aerospace Engineering from the University of Michigan and his Ph.D in Aerospace Engineering from the Pennsylvania State University.