Andrew Alfonso Frank is an emeritus American professor of Mechanical and Aeronautical Engineering at University of California, Davis (UC Davis). He is recognized as the father of modern plug-in hybrids, and coined the now-common term Plug-in Hybrid Electric Vehicle (PHEV). He has a B.S.M.E degree (1955) from the University of California, Berkeley, a M.S.M.E (1958), from the University of California, Berkeley, an M.S.E.E (1965) from the University of Southern California, and holds a Ph.D. in E.E (1968) from the University of Southern California. Frank worked at North American Aviation then North American/Rockwell Aviation from 1955 to 1968 on programs such as the X15 Research Aircraft, Helicopter stability and control systems, the Apollo Project to the moon, and the Minuteman intercontinent