Razak was appointed as the Civilian Pilot Training coordinator developing a curriculum for pilots and mechanics. He was appointed as an associate professor at Wichita University and set up an aeronautical engineering school. Razak was also the head of the School of Business and supervised the installation of the first computer. In 1946, Razak designed a wind tunnel using war surplus aircraft engines. This research program which began with donated farm equipment developed the Cessna Ag-Wagon. He was often called upon to be an expert witness in aircraft accident investigations. In 2005, the National Institute for Aviation Research invested upgrades to the Razak wind tunnel.