Woodruff Distinguished Seminar 

Physics of Mach 7+ Hypersonic Propulsion Flowpath

featuring

Tonghun Lee

Professor, Department of Aeronautics & Astronautics
Stanford University

Tuesday, September 1st from 

11:00 am to 12:00 pm

MRDC 4211

Virtual
https://teams.microsoft.com/meet/290349859348279?p=KHugRE8v7B3xF4ZNKc

Abstract:
Hypersonic propulsion systems operating at high Mach numbers require a unique understanding
of relevant gas dynamics and reactive chemistry to ensure that maximum thrust can be generated
with minimal loss in efficiency. Key physics that govern the design of various components in a
hypersonic propulsion system will be presented using both experimental data obtained in the ‘Arc
Heated Combustion Tunnel (ACT-II)’ at Stanford University and theoretical modeling of key
phenomena. Concepts such as inlet design, scram to ram transition, unstart mitigation, stabilization
of combustion, and nozzle performance will be included. The physics discussed here will present
critical guidelines for design of both commercial and military hypersonic propulsion systems in
the future.

Biography:
Dr. Tonghun Lee is a Professor in the Department of Aeronautics &
Astronautics at Stanford University, where he directs the ‘Stanford
Propulsion and Space Exploration’ Laboratory. His research is focused
on utilizing advanced laser and optical diagnostics for study of next
generation aero propulsion concepts such as hypersonic scramjets,
compact UAVs, and integration of sustainable aviation fuels. Professor
Lee is the academic lead for the Department of Defense Center for UAS
Propulsion (CUP), and a member of the FAA Center of Excellence in
Sustainable Aviation, ASCENT.