Duane McRuer

McRuer was also involved in government and professional service. He was an advisor to NASA on the flight control system of the Space Shuttle. Later, while serving on the NASA Advisory Council, he advised on the redesign of the International Space Station. He chaired a National Research Council study on the phenomenon of pilot induced oscillations, which produced recommendations for improving aircraft safety. He was a longtime member and leader of the Aerospace Control and Guidance Systems Committee (ACGSC), which organizes technical meetings for the field. He was elected to the National Academy of Engineering in 1988 with the citation "For pioneering application of guidance and control theory and to experimental man-machine interactions."

McRuer loved the outdoors, and especially the mountains. This interest began during boyhood experiences exploring Yosemite and General Grant (now Kings Canyon) National Parks with family. He joined the Sierra Club in 1962, and was active in the Angeles Chapter, serving as the chair of the Sierra Peaks Section in 1976. By 1985 he had climbed all of the 297 mountains on the Sierra Peaks list, and later climbed the 97 mountains on the Desert Peaks list twice. His pursuit of list finishing included visiting the highest point in every state save for Alaska.

STI's reputation for what became known as manual control theory garnered international interest. In 1960 the Franklin Institute awarded McRuer and his coauthor Ezra Krendel its Levy Medal for their studies of human dynamic behavior, in particular the paper "The Human Operator as a Servo System Element". McRuer traveled to speak at professional meetings and symposiums around the world. He retired as president of STI in 1993, but remained chairman of the board. For the 1992–1993 academic year, he served as the Jerome C. Hunsaker Visiting Professor of Aerospace Systems at MIT, and delivered the Mina Martin Lecture "Human Dynamics and Pilot-Induced Oscillations".

In 1957 McRuer, his wife Betty, and Northrop engineer Irving Ashkenas co-founded Systems Technology Inc. (STI) in Hawthorne, CA. The company provided research and development consulting to the aircraft and nascent aerospace industries. Later contracts came from both the private and public sector for studies on the interplay of human behavior and a wide variety of dynamical systems. Human-vehicle studies expanded beyond aircraft to include automobiles, trucks, and military vehicles.

McRuer served in the US Navy during World War II as a lieutenant, and worked on anti-submarine techniques. He earned a Bachelor of Science degree in Mechanical Engineering in 1945 and a Master of Science degree in Electrical Engineering in 1948, both from the California Institute of Technology.

Duane Torrance "Mac" McRuer (October 25, 1925 – January 24, 2007) was a scientist, engineer, and expert in aircraft flight and other vehicle controls who cofounded Systems Technology Inc. in 1957. He made many contributions to the theory and practical application of human-machine interaction and control.

McRuer's father, John Torrance McRuer, and his mother, Ruth Inez Bartlett, graduated from Park College in Park City, Missouri in 1910. John later graduated with a master's degree in education from Stanford University, and worked in education throughout his professional life as an instructor and administrator. Ruth developed McRuer's interest in academic pursuits by encouraging him to read and study.