A.M.O. Smith
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Apollo Milton Olin Smith (usually referred to as A.M.O. Smith) (born July 2, 1911 – May 1, 1997) was an important figure in the aerodynamics field at
Douglas Aircraft The Douglas Aircraft Company was an American aerospace and defense company based in Southern California. Founded in 1921 by Donald Wills Douglas Sr., it merged with McDonnell Aircraft in 1967 to form McDonnell Douglas, where it operated as a di ...
from 1938 to 1975 and an early pioneer in the area of
computational fluid dynamics Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve fluid dynamics, fluid flows. Computers are used to perform the calculations required ...
.


Early life

A.M.O. Smith was born in
Columbia, Missouri Columbia is a city in Missouri, United States. It was founded in 1821 as the county seat of Boone County, Missouri, Boone County and had a population of 126,254 as recorded in the 2020 United States census, making it the List of cities in Misso ...
. He graduated from Woodrow Wilson High School in
Long Beach, California Long Beach is a coastal city in southeastern Los Angeles County, California, United States. It is the list of United States cities by population, 44th-most populous city in the United States, with a population of 451,307 as of 2022. A charter ci ...
in 1929 and went on to study at Compton Junior College in
Compton, California Compton is a city located in the Gateway Cities region of southern Los Angeles County, California, United States, situated south of downtown Los Angeles. Compton is one of the oldest cities in the county, and on May 11, 1888, was the eighth ci ...
and finally the
California Institute of Technology The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...
in
Pasadena, California Pasadena ( ) is a city in Los Angeles County, California, United States, northeast of downtown Los Angeles. It is the most populous city and the primary cultural center of the San Gabriel Valley. Old Pasadena is the city's original commerci ...
, where he received his BS in 1936 and his MS in 1938. While at Long Beach, he was a member of the Long Beach Glider Club along with John Pierce, one of the earliest glider clubs in southern California. While at Caltech, he built and tested a number of rockets with Professor Theodore von Kármán's students Frank Malina, Edward Forman, Jack Parsons and Tsien Hsue-shen. This work led to the formation of Aerojet and the
Jet Propulsion Laboratory The Jet Propulsion Laboratory (JPL) is a Federally funded research and development centers, federally funded research and development center (FFRDC) in La Cañada Flintridge, California, Crescenta Valley, United States. Founded in 1936 by Cali ...
several years later.


Career

In June 1938, Smith was hired by the El Segundo Division of
Douglas Aircraft The Douglas Aircraft Company was an American aerospace and defense company based in Southern California. Founded in 1921 by Donald Wills Douglas Sr., it merged with McDonnell Aircraft in 1967 to form McDonnell Douglas, where it operated as a di ...
. During his time there, he worked on aerodynamic and preliminary design problems of the DC-5, SBD Dauntless, DB-7 Boston, A-20 Havoc and A-26 Invader. In October 1942 he went on a leave of absence, at the request of General H.H. Arnold, to help organize and develop the newly formed Aerojet company as its first Chief Engineer. Under his guidance, the engineering organization at Aerojet grew from six people to over 400 by the time he left. This period saw the development and quantity production of the
JATO JATO (acronym for jet-assisted take-off) is a type of assisted take-off for helping overloaded aircraft into the air by providing additional thrust in the form of small rockets. The term ''JATO'' is used interchangeably with the (more specific ...
type rocket at Aerojet. After he returned to
Douglas Aircraft The Douglas Aircraft Company was an American aerospace and defense company based in Southern California. Founded in 1921 by Donald Wills Douglas Sr., it merged with McDonnell Aircraft in 1967 to form McDonnell Douglas, where it operated as a di ...
in March 1944, he resumed work in aerodynamics and preliminary design. He was responsible for the detailed aerodynamic design of the D-558-I Skystreak, which for a period held the world speed record. He was also responsible for the design of the F3D-1 Skynight. At the end of
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, he was a member of the US Naval Technical Mission in Europe. In his three months touring captured German aeronautical facilities, he became familiar with the German work on the low drag properties of swept wings at transonic speeds and their development of tailless aircraft. After returning to Douglas, he proposed and began studies for a tailless aircraft. These studies culminated in the design and production of the F4D-1 Skyray interceptor. For a period, the F4D-1 held six FAI World Records, including absolute speed and climb performance. In 1948, he became the Supervisor of Design Research at Douglas, a position he held until 1954. During this period, he conducted research into a number of areas, including
laminar flow Laminar flow () is the property of fluid particles in fluid dynamics to follow smooth paths in layers, with each layer moving smoothly past the adjacent layers with little or no mixing. At low velocities, the fluid tends to flow without lateral m ...
control and a means of calculating low speed flow about arbitrary bodies -
Computational Fluid Dynamics Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve fluid dynamics, fluid flows. Computers are used to perform the calculations required ...
. In 1954 he became Supervisor of Aerodynamics Research and from 1969 to 1975 he was Chief Aerodynamics Engineer - Research at Douglas. In this period, he oversaw development of practical methods of analyzing laminar and turbulent
boundary layer In physics and fluid mechanics, a boundary layer is the thin layer of fluid in the immediate vicinity of a Boundary (thermodynamic), bounding surface formed by the fluid flowing along the surface. The fluid's interaction with the wall induces ...
flow, new and improved static pressure probes, the hydrogen bubble technique of flow visualization, potential flow analysis, analysis of stability and transition of boundary layers and the en method of predicting boundary layer transition. In June 1975, he retired from what was then
McDonnell Douglas McDonnell Douglas Corporation was a major American Aerospace manufacturer, aerospace manufacturing corporation and defense contractor, formed by the merger of McDonnell Aircraft and the Douglas Aircraft Company in 1967. Between then and its own ...
. After retiring, he was appointed adjunct professor at
UCLA The University of California, Los Angeles (UCLA) is a public land-grant research university in Los Angeles, California, United States. Its academic roots were established in 1881 as a normal school then known as the southern branch of the C ...
, a position he held from 1975 to 1980.


Personal life

Smith was married to Elisabeth Caroline Krost on December 5, 1943. They had three children.


References

* Cebeci, Tuncer, ''Legacy of a Gentle Genius; The Life of A.M.O. Smith'', Horizons Publishing, 1999.


See also

* Cebeci–Smith model * Guggenheim Aeronautical Laboratory {{DEFAULTSORT:Smith, Apollo Milton Olin 1911 births 1997 deaths American aerospace engineers Early spaceflight scientists Fluid dynamicists Computational fluid dynamicists Businesspeople from Columbia, Missouri 20th-century American engineers 20th-century American businesspeople