sentences:  He also helped to found the Continuing Education Aerospace Short Course program at the University of Kansas in 1977 and still teaches for the program.Roskam founded the Design, Analysis and Research Corporation (DARcorporation) in 1991 with Willem Anemaat in Lawrence, Kansas and served as the company's president until 2004.The main focus of the company is design consultation, software and textbooks in the aviation field.