Phillip Ligrani, noted researcher, professor, author and eminent scholar in propulsion at The University of Alabama in Huntsville (UAH) will give a public talk on Friday, Jan. 23. Ligrani's seminar "Heat Transfer and Aerodynamics Research for Gas Turbines and Other Propulsion Systems," will be presented at 10 a.m., in the Charger Union Theater. The Inaugural Eminent Scholar seminar is sponsored by the UAH College of Engineering. The talk is free and open to the public.