On September 5, 2023, the AE seminar for Fall semester was held. Professor Lee Sung-gyu from the University of California, Davis was invited as a speaker based on the recommendation of Professor Lee Sang-Bong. He delivered a lecture titled "Toward Quiet Skies: Rotor Aeroacoustics in Urban Air Mobility Applications." to M.S. students of the AE department, In response, our department presented a plaque of appreciation.