[Doctoral dissertation of the father of Russian aviation science] Zhukovsky, N. E. About the strength of the movement.

Dissertation for the degree of Doctor of Applied Mathematics, which he defended on April 30, 1882. Nikolai Yegorovich Zhukovsky (1847-1921) was a Russian mechanical scientist, the founder of hydro-and aerodynamics, on which the whole aviation science is based.

In 1883, in the article "Application of the theory of higher-order acceleration centers to the Chebyshev guiding mechanism" [7], N. E. Zhukovsky applied the apparatus of the theory of higher-order accelerations (created in the works of A. Transon, A. Rezal and O. I. Somov) to the theory of mechanisms — in the problem of the synthesis of a symmetric rectilinear-guiding Chebyshev's mechanism.

In 1890, there was a publication in the Mathematical Collection of the Moscow University of a large work by N. E. Zhukovsky "Modification of the Kirchhoff's method for determining the motion of a liquid in two dimensions at a constant velocity given on an unknown current line". In the same year, he made an attempt to develop a theoretical basis for determining the lift of a propeller or wing — "To the theory of flying".

Zhukovsky's work in the field of aerodynamics was the source of the main ideas on which aviation science is based. He comprehensively investigated the dynamics of bird flight, and on November 3, 1891, he made a report "On the soaring of birds". In 1892, he made a report "On the Chernushenko's flying projectile"; having compiled the basic dynamics equations for the center of gravity of a gliding body (that is, at a constant angle of attack), Zhukovsky found trajectories under various conditions of air movement.

In 1895, N. E. Zhukovsky traveled to Germany, where he met with aviation pioneer Otto Lilienthal and purchased one of his gliders for research. 

In 1897-1898 N. E. Zhukovsky investigated the causes of accidents in the Moscow water supply system; on February 21, 1898, at a meeting of scientists and engineers at the Polytechnic Society, he made a report on the phenomena of hydraulic shock, opened its mechanism, and derived formulas connecting the flow velocity, pressure, and density with the radius of the pipe, depending on the time and distance of the considered section from the selected origin.

In the autumn of 1898, at the X Congress of Russian Naturalists and Doctors, Zhukovsky read a review report "On Aeronautics". In the same year, he developed optimally economical methods of horizontal flight — "About winged propellers".

In 1904, Zhukovsky formulated a theorem that gives a quantitative value of the lift force of an airplane wing; determined the main profiles of the wings and propeller blades of an airplane; developed the vortex theory of an air propeller. On November 15, 1905, he read the report "On attached vortices", which laid the theoretical basis for the development of methods for determining the lift force of an airplane wing. He published his discoveries in 1906 in the work "On the fall in the air of light oblong bodies rotating about their longitudinal axis".

In 1910-1912, he gave a course of lectures "Theoretical foundations of Aeronautics", in which he systematized his theoretical works and experimental research at the Kuchinsky Institute, as well as the research of S. A. Chaplygin. He developed a mathematical apparatus for solving problems of wing flow.

In the works of 1912-1916, Zhukovsky established the law of speed distribution at the propeller blade, which became the theoretical basis for the design of propellers.

During the First World War, he developed the theory of bombing, worked on the ballistics of artillery shells.

A separate print from the " Scientific Notes of the Imp. Moscow University, Department of Physics and Mathematics, issue 4". No publishing cover. Tears on the edges of the root and at the base of the title page. 

Worldcat and KVK do not find any examples in the libraries of the world. Very rare.

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• Code: 1907c62

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