Sergey Chaplygin

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Sergey Alekseyevich Chaplygin
Born	(1869-04-05)April 5, 1869 Ranenburg
Died	October 8, 1942(1942-10-08) (aged 73) Novosibirsk
Nationality	Russia
Alma mater	Moscow University
Known for	mechanics
Awards	Orders of Lenin (1933, 1941) Order of the Red Banner of Labour (1927,?) Zhukovsky Prize (1925)
Scientific career
Fields	Mechanician
Institutions	TsAGI, Moscow University, etc.
Doctoral advisor	Nikolay Zhukovsky
Doctoral students	Nikolai Kochin

Sergey Alexeyevich Chaplygin (Russian: Серге́й Алексе́евич Чаплы́гин; April 5, 1869, Ranenburg – October 8, 1942, Novosibirsk) was a Russian and Soviet physicist, mathematician, and mechanical engineer. He is known for mathematical formulas such as Chaplygin's equation and for a hypothetical substance in cosmology called Chaplygin gas, named after him.

He graduated in 1890 from Moscow University, and later became a professor. He taught mechanical engineering at Moscow Higher Courses for Women in 1901, and of applied mathematics at Moscow School of Technology, 1903. He was appointed Director of the courses in 1905. Leonid I. Sedov was one of his students.

Chaplygin's theories were greatly inspired by N. Ye. Zhukovsky, who founded the Central Institute of Aerodynamics. His early research consisted of hydromechanics. His "Collected Works" in four volumes were published in 1948.

Honours and awards[]

• Hero of Socialist Labour (1 February 1941)
• Two Orders of Lenin (1 February 1941 and 22 December 1933)
• Order of the Red Banner of Labour, twice (10 July 1927 and ?)
• Zhukovsky Prize (1925)

Chaplygin was elected to the Russian Academy of Sciences (the Academy of Sciences of the USSR in 1925-1991) in 1924.

The lunar crater Chaplygin and town Chaplygin are named in his honour.

See also[]

• Chaplygin gas
• Chaplygin's equation
• Lamb–Chaplygin dipole
• Chaplygin sleigh
• Chaplygin's top

External links[]

Wikimedia Commons has media related to Sergey Alexeyevich Chaplygin (physicist).

• O'Connor, John J.; Robertson, Edmund F., "Sergey Chaplygin", MacTutor History of Mathematics archive, University of St Andrews