John Anthony Llewellyn (22 April 1933 – 2 July 2013), was a Welsh-born American scientist and a former NASA

astronaut An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft. Although generally r ...

candidate.

Biography

Llewellyn was born 22 April 1933, in Cardiff, Wales, United Kingdom, and graduated from Cardiff High School in 1949. He received his BSc degree from University College, Cardiff in 1955 and went on to achieve his

PhD PHD or PhD may refer to: * Doctor of Philosophy (PhD), an academic qualification Entertainment * '' PhD: Phantasy Degree'', a Korean comic series * ''Piled Higher and Deeper'', a web comic * Ph.D. (band), a 1980s British group ** Ph.D. (Ph.D. albu ...

degree in

chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...

in 1958. He married Valerie Mya Davies-Jones, and they had three children.

Post-education

After the award of his doctorate, Llewellyn moved to Ottawa, Ontario, Canada and served as a post-doctoral fellow at the National Research Council. In 1960, he went to

Florida State University Florida State University (FSU) is a public research university in Tallahassee, Florida. It is a senior member of the State University System of Florida. Founded in 1851, it is located on the oldest continuous site of higher education in the st ...

as a research associate in the Chemistry Department and was subsequently appointed Assistant Professor. In 1964, he was jointly appointed associate professor in both the School of Engineering Science and the Department of Chemistry.

Diving

Having been taught to dive by aquanaut

Jacques Cousteau Jacques-Yves Cousteau, (, also , ; 11 June 191025 June 1997) was a French naval officer, oceanographer, filmmaker and author. He co-invented the first successful Aqua-Lung, open-circuit SCUBA (self-contained underwater breathing apparatus). T ...

, Llewellyn served as training director for Florida State University's diver training program. This was one of the first scuba diving certification programs in the United States. Among those he certified was sixteen year old

E. Lee Spence Edward Lee Spence (born November 1947) is a pioneer in underwater archaeology who studies shipwrecks and sunken treasure. He is also a published editor and author of non-fiction reference books; a magazine editor (''Diving World'', ''Atlantic C ...

, who received his certification on 10 July 1964. Spence went on to become one of the pioneers of underwater archaeology. Llewellyn's diving gave him experience in the feeling of weightlessness, which helped prepare him for his later training as an astronaut.

NASA selection

Llewellyn was selected as a scientist-astronaut by NASA in August 1967. He participated in flight training as part of NASA Astronaut Group 6; however, he dropped out of flight school and resigned from NASA in September 1968. Llewellyn needed to learn to fly jets, and was not able to fly the jet with the cockpit blacked out.

Post-NASA experience

While with the University of South Florida's Department of Chemical Engineering, Llewellyn also served as Director of the College of Engineering's computing department, and later as University Director of Academic Computing, where he helped initiate USF's programs in High-Performance Computing and electronic and distance learning. In 2007, he retired from the directorship position and served as Professor

Emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...

in the Department of Chemical and Biomedical Engineering until his death. His research interests included the development of impedance-based sensor measurement methods and instrumentation for invivo monitoring of tissue after the application of an electric field mediated plasmid delivery protocol (IEEE Transactions on Dielectrics and Electrical Insulation 16(5): 1348–1355. His current work was presented at the 2010 American Society for Gene and Cell Therapy and he was an invited session leader at the 2010 Gordon Conference in Bioelectrochemistry.

Death

Llewellyn died on 2 July 2013 after suffering a stroke.