1 / 22
Photo 1/22 du lotPhoto 2/22 du lotPhoto 3/22 du lotPhoto 4/22 du lotPhoto 5/22 du lotPhoto 6/22 du lotPhoto 7/22 du lotPhoto 8/22 du lotPhoto 9/22 du lotPhoto 10/22 du lotPhoto 11/22 du lotPhoto 12/22 du lotPhoto 13/22 du lotPhoto 14/22 du lotPhoto 15/22 du lotPhoto 16/22 du lotPhoto 17/22 du lotPhoto 18/22 du lotPhoto 19/22 du lotPhoto 20/22 du lotPhoto 21/22 du lotPhoto 22/22 du lot
Cazo Maison de ventes aux enchères

186 - RIABOUCHINSKY Dimitri (1882–1962) – Autograph A significant …
See original version (French)

Estimate €800 - €1,500
Sale commission
Description
RIABOUCHINSKY Dimitri (1882–1962) – Autograph A significant selection of scientific works by Dimitri Riabouchinsky, Paris, 1930s. Including: • Report on the work supervised by Professor D. Riabouchinsky, Paris, 26 February 1934. Typescript with handwritten fragments (calculation formulas, corrections). In French, 14 pp., 27 x 21 cm. The work concerns: the reconciliation of theoretical hydrodynamics and real fluid mechanics; processes capable of improving the lift characteristics of aircraft; the efficiency of high-speed propulsion systems and their potential contribution to aviation safety. • Preliminary report by M. D. Riabouchinsky on the two fixed-sum collaborations established by the Ministerial Order of 3 December 1935. 1) Improvement of the aerodynamic qualities of wing profiles at high speeds. 2) Improvement of the aerodynamic qualities of propellers at high speeds. Presented on 23 December 1935. In French, 12 pp., 10 pp. of ill., 27 x 22 cm, as is (tears at the edges). • Abstract. Some remarks on the analytical geometry of angular, discontinuous or indeterminate shapes. Typescript with handwritten fragments (calculation formulas, corrections). 10 pp., in French, 27 x 21.5 cm, A.B.E. • Introduction to a scientific study. Typescript with handwritten fragments (calculation formulas, corrections). Undated, in French, 14 pp., 27 x 21 cm. Study on the influence of vortices on boundary layers. Russian Art Dmitry Ryabushinsky (1882–1962) – Autograph An important collection of scientific works by Dmitry Ryabushinsky, Paris, 1930s. Includes: • Report on work supervised by Professor D. Ryabushinsky, Paris, 26 February 1934. Typewritten text with handwritten sections (calculations, corrections). In French, 14 pp., 27 x 21 cm. The work covers the following topics: the convergence of theoretical hydrodynamics and the actual mechanics of fluids; methods to improve the aerodynamic characteristics of motor vehicles, engine efficiency at very high speeds, and methods capable of enhancing the safety of air navigation. • Preliminary report by Mr D. Ryabushinsky on two fixed projects established by ministerial decree of 3 December 1935. 1) Improvement of the aerodynamic characteristics of wing profiles at high speeds. 2) Improvement of the aerodynamic characteristics of propellers at high speeds. Submitted on 23 December 1935. In French, 12 pp., 10 pp. ill., 27 x 22 cm, in condition (tears along the edges). • Summary. Several remarks on the analytical geometry of angular, discontinuous or indeterminate forms. Typewritten text with handwritten fragments (calculation formulas, corrections). 10 pp., in French, 27 x 21.5 cm, generally in good condition. • Introduction to scientific research. Typewritten text with handwritten fragments (calculation formulas, corrections). Undated, in French, 14 pp., 27 x 21 cm. Study of the influence of vortices on boundary layers.
See original version (French)
Auto-translation. Refer to original language for legal validity.
About the sale Russian Art
Auction location
Auction time 07/07/2026 at 2:00 PM
Pictures credits: Contact the Auction House
You may also like