Francis Hettinger Clauser (May 25, 1913 – March 3, 2013) was an American aerospace engineer and university administrator whose career spanned boundary-layer fluid mechanics, magnetohydrodynamics, environmental engineering, and space-policy advocacy. Trained under Theodore von Karman at the California Institute of Technology, he earned three degrees there between 1934 and 1937 and went on to shape engineering programs at Douglas Aircraft, Johns Hopkins University, the University of California Santa Cruz, and Caltech itself. Emeritus professor of aeronautics Donald Coles placed him among “the four founders of the science of boundary layers as it stands today.” Clauser lived to ninety-nine, and a memorial lunch was held on May 25, 2013, the day that would have been his hundredth birthday.
Key facts
- Born: 25 May 1913
- Birthplace: Kansas City
- Died: 3 March 2013
- Country: United States
- Occupation: university teacher; aerospace engineer
- Employer: Douglas; Johns Hopkins University; University of California, Santa Cruz; California Institute of Technology
- Education: California Institute of Technology
Early life and education
Francis Clauser was the younger of identical twins born to Celeste and Claude Clauser in Kansas City, Missouri, on May 25, 1913. His brother Milton arrived first. When the two were seventeen, their father, an inventor who held many patents, died, leaving Francis and Milton to support their mother and a younger sister, Betty.
The brothers enrolled at Kansas City Junior College before learning of Caltech’s distinguished faculty. They applied as transfer students, were accepted, and the entire family relocated to Pasadena. Francis earned a Bachelor of Science in 1934, a Master of Science in 1935, and a PhD in aeronautics in 1937, completing his doctoral research under Theodore von Karman. The two 1937 theses he co-authored with Milton are described in detail below.
Doctoral research
Clauser’s 1937 Caltech PhD produced two distinct documents. The experimental study, ‘The Effect of Curvature on the Transition from Laminar to the Turbulent Boundary Layer,’ was co-authored with Milton; Francis was second author on that work. The mathematical treatise, ‘New Methods of Solving the Equations for the Flow of a Compressible Fluid,’ also co-authored with Milton, carried Francis as first author. Milton held the reversed authorship order on each paper, so together the pair submitted four distinct dissertation documents.
Career at Douglas and Johns Hopkins University
After Caltech, Clauser worked at Douglas Aircraft before joining Johns Hopkins University, where he built an aeronautics department whose facilities included three large wind tunnels. One of those tunnels was supersonic. Clauser personally designed all three to exhibit very low residual turbulence in their test sections, a technical requirement central to reliable aerodynamic measurement.
His publications from this period and beyond included papers on nonlinear mechanics, guided missile technology, magnetohydrodynamics, and partial differential equations. He also compiled the book Plasma Dynamics (Addison-Wesley, 1960), assembled from a symposium he chaired on what was at the time a very young field.
Founding the engineering school at UC Santa Cruz
In 1965, Clauser was invited from Johns Hopkins to the newly created University of California campus at Santa Cruz to establish its engineering school. He served there variously as academic vice chancellor, vice chancellor for science and engineering, and professor of applied science.
Return to Caltech: Space Shuttle, environmental engineering, and administration
Clauser was a member of the 1968 Task Force on Space, chaired by Nobel laureate Charles Townes. Within that body he championed a winged, reusable space vehicle. The concept subsequently gained traction and contributed to the development of the Space Shuttle program.
In 1971 Clauser launched Caltech’s interdisciplinary graduate program in environmental engineering science. The following year he established the Environmental Quality Laboratory, organized in partnership with JPL, the RAND Corporation, and the Aerospace Corporation, with a focus on pollution control, water and energy policy, and sewage disposal.
During his tenure as division chair at Caltech, Clauser recruited communications scientist John Pierce from Bell Laboratories to build up the communications science program. He also oversaw construction of the Earle M. Jorgensen Laboratory of Information Science.
The Milton and Francis Clauser Doctoral Prize
Milton Clauser died in 1980. Following his death, Francis, his wife, and his sister-in-law established the annual Milton and Francis Clauser Doctoral Prize at Caltech. The prize is awarded for the Caltech PhD thesis judged to have the greatest potential for opening up entirely new lines of research.
Death and legacy
Francis H. Clauser died on March 3, 2013, at age ninety-nine. A memorial lunch was held on May 25, 2013, at the Athenaeum at Caltech, the date that would have been his hundredth birthday. Donald Coles, emeritus professor of aeronautics, credited Clauser as one of the four founders of modern boundary-layer science, a field whose experimental and mathematical foundations his 1937 doctoral work had helped establish.
Did you know
- Francis and his identical twin Milton each submitted two separate Caltech PhD theses in 1937. Francis was first author on the mathematical treatise and second author on the experimental study, while Milton held the reversed order on each. Between them, the pair produced four distinct dissertation documents. (eas.caltech.edu)
- Short of money after their father’s death, the Clauser twins rebuilt a motorcycle to get to Caltech classes. As undergraduates they also joined a local magician’s society called the Mystic Thirteen, performing an act in which one brother vanished behind a screen while the other emerged in a completely different outfit. (eas.caltech.edu)
Data sources
Where it appears
- 1955 CIA Memo: A Senator’s Glowing Object Over Soviet Baku October 29, 2026
Data updated: 2026-10-26