"Advanced Measurement Techniques and Hypersonic Wind Tunnel Testing"

This event is sponsored by FAMU-FSU Engineering Department of Mechanical and Aerospace Engineering.

Abstract: Hypersonic aerodynamics is an important, yet incredibly challenging area of research. Multiple technological hurdles must be overcome in order for capabilities, such as reusable, air-breathing hypersonic aircraft, to become feasible. This seminar will present recent contributions towards enhanced ground-testing approaches and analyses for hypersonic applications with a focus on boundary layer dynamics and optical measurement techniques. Measurements of hypersonic boundary layers using CO2-enhanced Rayleigh scattering, self-aligned focusing schlieren, and infrared thermography are presented. Qualitative and quantitative visualizations of flow features driving the laminar-to-turbulent transition process are discussed. All of the presented results were collected in the AFRL Mach-6 Ludwieg tube but have broader utility and implications for the larger aerodynamic research community and adjacent areas of research (e.g., propulsion, microfluidics, explosives, oil/gas, etc.).

Luke Hill

Research Assistant Professor

Embry-Riddle Aeronautical University

Speaker Bio: Luke Hill is a leader in high-speed wind tunnel testing and optical measurement techniques for aerospace applications. He earned a Bachelor’s in Aerospace Engineering from NC State in 2017 before serving three years in the U.S. Air Force performing hypersonic wind-tunnel research. Luke completed his Master’s and Ph.D. at the Air Force Institute of Technology (AFIT) where his research focused on hypersonic boundary layer instability and transition and optical diagnostics. Luke is now a research assistant professor at Embry-Riddle Aeronautical University where he is establishing a new hypersonic research program. He is also the founder of RH Technologies where he develops optical measurement systems, supports testing, and provides consulting services with a particular focus on hypersonic applications.