A third-year aircraft engineering student is seeking project ideas focused on mechanical design and testing, particularly in aviation. Suggestions include evaluating the relationship between propeller blade numbers and various aircraft performance metrics, as well as applying modern analytical techniques to older aircraft designs like the Gotha GO-229. Other ideas involve investigating the workings of the pitot static system and gyroscopic systems, along with future flight deck instrumentation. The student plans to incorporate practical elements by working with a new flight simulator at their college. Overall, the discussion emphasizes innovative approaches to both new and existing aviation technologies.