James Nelson Hallock (born January 23, 1941) is an American physicist. He has contributed to

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding t ...

Gemini Gemini may refer to: Space * Gemini (constellation), one of the constellations of the zodiac ** Gemini in Chinese astronomy * Project Gemini, the second U.S. crewed spaceflight program * Gemini Observatory, consisting of telescopes in the Northern ...

and

Apollo missions The Apollo program was a United States human spaceflight program carried out from 1961 to 1972 by the National Aeronautics and Space Administration (NASA), which landed the first astronauts on the Moon. The program used the Saturn IB and Saturn ...

and served on the Columbia Accident Investigation Board. He is a leading scientist in

wake vortices Wake turbulence is a disturbance in the atmosphere that forms behind an aircraft as it passes through the air. It includes variety of elements, the most significant of which are wingtip vortices and jetwash. Jetwash refers to the rapidly moving g ...

, and co-authored two patents and over 150 papers. Hallock was born in

Yonkers, New York Yonkers () is a city in Westchester County, New York, United States. Developed along the Hudson River, it is the third most populous city in the state of New York, after New York City and Buffalo. The population of Yonkers was 211,569 as enu ...

, and earned his

bachelor's degree A bachelor's degree (from Middle Latin ''baccalaureus'') or baccalaureate (from Modern Latin ''baccalaureatus'') is an undergraduate academic degree awarded by colleges and universities upon completion of a course of study lasting three to six ...

in 1963,

master's degree A master's degree (from Latin ) is an academic degree awarded by universities or colleges upon completion of a course of study demonstrating mastery or a high-order overview of a specific field of study or area of professional practice.

in 1969, and

Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is a ...

in 1972 from

Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the ...

. He has retired from the

U.S. Department of Transportation The United States Department of Transportation (USDOT or DOT) is one of the executive departments of the U.S. federal government. It is headed by the secretary of transportation, who reports directly to the President of the United States and ...

as a senior scientist, Air and Space Transportation Safety at the

Volpe National Transportation Systems Center The John A. Volpe National Transportation Systems Center or simply Volpe in Cambridge, Massachusetts, is a center of transportation and logistics expertise, operating under the United States Department of Transportation (U.S. DOT). The Volpe C ...

Cambridge Cambridge ( ) is a university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cambridge bec ...

Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...

. Hallock's career began as a graduate student, working for the MIT Instrumentation Lab (in the Apollo Optics Group) in 1963. During this time he gathered information on

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

landmarks to be used by guidance systems on the

Apollo Apollo, grc, Ἀπόλλωνος, Apóllōnos, label=genitive , ; , grc-dor, Ἀπέλλων, Apéllōn, ; grc, Ἀπείλων, Apeílōn, label=Arcadocypriot Greek, ; grc-aeo, Ἄπλουν, Áploun, la, Apollō, la, Apollinis, label= ...

and

space missions. He continued research with

's Electronic Research Center until 1970. In 1970 he left the Research Center to work at the Department of Transportation's Volpe Center. Here he began his lifelong work on wake vortices. In 1986 he was promoted to Division Manager of the Aviation Safety Division, and held that post until 2006. At that time the

Secretary of Transportation A secretary, administrative professional, administrative assistant, executive assistant, administrative officer, administrative support specialist, clerk, military assistant, management assistant, office secretary, or personal assistant is a wh ...

promoted him to senior scientist. Most recently, in 2003, he was selected to sit on the Columbia Accident Investigation Board. Here his expertise was used in determining the final reports and causes of that fateful disaster. Hallock was a longtime resident of

Waltham, Massachusetts Waltham ( ) is a city in Middlesex County, Massachusetts, United States, and was an early center for the labor movement as well as a major contributor to the American Industrial Revolution. The original home of the Boston Manufacturing Company, th ...

, residing there for 50 years, 1972 to 2022.

References

{{DEFAULTSORT:Hallock, James N. 21st-century American physicists 1941 births Living people