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Apollo Milton Olin Smith (usually referred to as A.M.O. Smith) (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 manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as ...
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 flows. Computers are used to perform the calculations required to simulate th ...
.


Early life

A.M.O. Smith was born in
Columbia, Missouri Columbia is a city in the U.S. state of Missouri. It is the county seat of Boone County and home to the University of Missouri. Founded in 1821, it is the principal city of the five-county Columbia metropolitan area. It is Missouri's fourth ...
. He graduated from Woodrow Wilson High School in
Long Beach, California Long Beach is a city in Los Angeles County, California. It is the 42nd-most populous city in the United States, with a population of 466,742 as of 2020. A charter city, Long Beach is the seventh-most populous city in California. Incorporate ...
in 1929 and went on to study at
Compton Junior College Compton College is a public community college in Compton, California. From 2006, when it lost its regional accreditation, to 2017, when it regained that accreditation, it operated as a part of El Camino College. Before and after the partnership ...
in
Compton, California Compton is a city in 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 city in Los Angeles County to incorporat ...
and finally the
California Institute of Technology The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasional ...
in
Pasadena, California Pasadena ( ) is a city in Los Angeles County, California, 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 commercial district. I ...
, 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 Theodore von Kármán ( hu, ( szőllőskislaki) Kármán Tódor ; born Tivadar Mihály Kármán; 11 May 18816 May 1963) was a Hungarian-American mathematician, aerospace engineer, and physicist who was active primarily in the fields of aeronaut ...
's students
Frank Malina Frank Joseph Malina (October 2, 1912 — November 9, 1981) was an American aeronautical engineer and painter, especially known for becoming both a pioneer in the art world and the realm of scientific engineering. Early life Malina was born in B ...
, Edward Forman, Jack Parsons and
Tsien Hsue-shen Qian Xuesen, or Hsue-Shen Tsien (; 11 December 1911 – 31 October 2009), was a Chinese mathematician, cyberneticist, aerospace engineer, and physicist who made significant contributions to the field of aerodynamics and established engineering ...
. This work led to the formation of
Aerojet Aerojet was an American rocket and missile propulsion manufacturer based primarily in Rancho Cordova, California, with divisions in Redmond, Washington, Orange and Gainesville in Virginia, and Camden, Arkansas. Aerojet was owned by GenCorp. ...
and the
Jet Propulsion Laboratory The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in the City of La Cañada Flintridge, California, United States. Founded in the 1930s by Caltech researchers, JPL is owned by NASA an ...
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 manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as ...
. During his time there, he worked on aerodynamic and preliminary design problems of the DC-5,
SBD Dauntless The Douglas SBD Dauntless is a World War II American naval scout plane and dive bomber that was manufactured by Douglas Aircraft from 1940 through 1944. The SBD ("Scout Bomber Douglas") was the United States Navy's main carrier-based scout/dive ...
,
DB-7 Boston The Douglas A-20 Havoc (company designation DB-7) is an American medium bomber, attack aircraft, night intruder, night fighter, and reconnaissance aircraft of World War II. Designed to meet an Army Air Corps requirement for a bomber, it was ...
,
A-20 Havoc The Douglas A-20 Havoc (company designation DB-7) is an American medium bomber, attack aircraft, night intruder, night fighter, and reconnaissance aircraft of World War II. Designed to meet an Army Air Corps requirement for a bomber, it was or ...
and
A-26 Invader The Douglas A-26 Invader (designated B-26 between 1948 and 1965) is an American twin-engined light bomber and ground attack aircraft. Built by Douglas Aircraft Company during World War II, the Invader also saw service during several major Col ...
. 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 Aerojet was an American rocket and missile propulsion manufacturer based primarily in Rancho Cordova, California, with divisions in Redmond, Washington, Orange and Gainesville in Virginia, and Camden, Arkansas. Aerojet was owned by GenCorp. ...
company as its first Chief Engineer. Under his guidance, the engineering organization at
Aerojet Aerojet was an American rocket and missile propulsion manufacturer based primarily in Rancho Cordova, California, with divisions in Redmond, Washington, Orange and Gainesville in Virginia, and Camden, Arkansas. Aerojet was owned by GenCorp. ...
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 Aerojet was an American rocket and missile propulsion manufacturer based primarily in Rancho Cordova, California, with divisions in Redmond, Washington, Orange and Gainesville in Virginia, and Camden, Arkansas. Aerojet was owned by GenCorp. ...
. After he returned to
Douglas Aircraft The Douglas Aircraft Company was an American aerospace manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as ...
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 The Douglas Skystreak (D-558-1 or D-558-I) was an American single-engine jet research aircraft of the 1940s. It was designed in 1945 by the Douglas Aircraft Company for the U.S. Navy Bureau of Aeronautics, in conjunction with the National Advisor ...
, which for a period held the world speed record. He was also responsible for the design of the
F3D-1 Skynight The Douglas F3D Skyknight (later designated F-10 Skyknight) is an American twin-engined, mid-wing jet fighter aircraft manufactured by the Douglas Aircraft Company in El Segundo, California. The F3D was designed as a carrier-based all-weather ...
. At the end of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
, 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 The Douglas F4D Skyray (later redesignated F-6 Skyray) is an American carrier-based fighter/ interceptor built by the Douglas Aircraft Company. Although it was in service for a relatively short time (1956–1964) and never entered combat, it w ...
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 In fluid dynamics, laminar flow is characterized by fluid particles following 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 mi ...
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 flows. Computers are used to perform the calculations required to simulate th ...
. 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 bounding surface formed by the fluid flowing along the surface. The fluid's interaction with the wall induces a no-slip boundary condi ...
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 was a major American 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 merger with Boeing in 1997, it produ ...
. 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. UCLA's academic roots were established in 1881 as a teachers college then known as the southern branch of the California St ...
, 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, Tove Anne Smith, Gerard Nicholas Smith and Kathleen Roberta Smith.


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 The Guggenheim Aeronautical Laboratory at the California Institute of Technology (GALCIT), was a research institute created in 1926, at first specializing in aeronautics research. In 1930, Hungarian scientist Theodore von Kármán accepted the dire ...
{{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