thermal conductivity, heat exchange, spacecraft, heat spreading, multilayered cylinder, thermal insulation

The use of thermal conductivity in multilayer structures is of great importance in connection with designing heat-shielding coatings for perspective spacecrafts. Many requirements should be taken into consideration for a successful space flight. The first and the most common requirement is that temperature of each element of a spacecraft during all the period of time should be maintained in the predetermined operating range. The article describes the method of solving the problem of thermal conductivity for a multilayer cylinder with symmetric boundary conditions of the third kind.

Nemirovsky Yuri Vladimirovich, e-mail: nemirov@itam.nsc.ru, Dr. Sci. Phys. & Math., Professor, Institute of Theoretical and Applied Mechanics S.A.Christianovich Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.

Mozgova Anna Stanislavovna, e-mail: mozgova-energo@yandex.ru, Candidate of Economic Sciences, I. Ulianov Chuvash State University, Cheboksary, Russia.